Expansion Vessels for Potable Installations - Flamco Group · PDF file• Special rubber (EPDM) diaphragm does not add any colour, odour or taste to the water. ... used in storage

112 Product overview • 2013 We reserve the right to change designs and technical specifications of our products.

Expansion Vessels for Potable InstallationsDomestic installations lose millions of litres of potable water due to expansion water leaking from the vent and expansion pipe. Flamco’s Airfi x diaphragm pressure expansion vessels for Potable equipment work to prevent this waste. Bacteria formation is prevented because Airfi x vessels are designed to allow a continuous fl ow through of water to maintain constant circulation. These expansion vessels can be applied in combination with all hot water calorifi ers and as surge vessels in pressure boosting systems.

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Expansion Vessels for Sanitary Installations

Product overview • 2013 We reserve the right to change designs and technical specifications of our products.

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Expansion Vessels for Potable InstallationsDomestic installations lose millions of litres of potable water due to expansion water leaking from the vent and expansion pipe. Flamco’s Airfi x diaphragm pressure expansion vessels for Potable equipment work to prevent this waste. Bacteria formation is prevented because Airfi x vessels are designed to allow a continuous fl ow through of water to maintain constant circulation. These expansion vessels can be applied in combination with all hot water calorifi ers and as surge vessels in pressure boosting systems.


Removable diaphragm

Airfi x Expansion Vessels for Sanitary SystemsReplaceable diaphragm(not streamlined)

Replaceable diaphragm(streamlined)

Airfi x DEL• 50 - 600 liters.• Max. operating pressure: 10 bar.• Pressurized vessels with streamline function.• DVGW and WRAS approved.• Observation port for diaphragm

rupture sensing.

Airfi x DE• 50 - 3,000 liters.• Max. operating pressure: 16 bar.• Pressurized vessels with streamline

function.• DVGW, ACS, WRAS and WRC

approved.• Electronic diaphragm-rupture sensor.

Airfi x P 2 - 35• 2 - 35 liters.• Max. operating pressure: 10 bar.• Colour: aluminium-grey

(RAL 9006).


(RAL 9006).

Airfi x P 500 - 5000• 500 - 5.000 liters.• Max. operating pressure: 10 bar.• Colour: grey (RAL 7040).• With feet from Airfi x P 750

upwards.

Airfi x P - Horizontal • Standard pre-charge: 3.5 bar.• Colour: aluminium-grey

(RAL 9006).

Airfi x DEB• 50 - 3,000 liters.• Max. operating pressure: 25 bar.• Pressurized vessels

(without streamline function).• WRAS and WRC approved.• Suitable for industrial use.

Airfi x 2 - 4• 2 - 4 liters.• Max. operating pressure: 5 bar.• Small pressurized vessels with

internal coating.

Airfi x A• 8 - 80 liters.• Max. operating pressure:

10 bar (8 - 25 liter) and 8 bar (35 - 80 liter).

• Pressurized vessels with streamline function.

• Suitable for mains-water systems.

Airfi x D• 8 - 35 liters.• Max. operating pressure: 10 bar.• Pressurized vessels with

advancedintegral streamline function.

• Includes T-piece.• Suitable for mains-water systems.

Fixed diaphragm

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Removable diaphragm

Airfi x Expansion Vessels for Sanitary SystemsReplaceable diaphragm(not streamlined)

Replaceable diaphragm(streamlined)

Airfi x DEL• 50 - 600 liters.• Max. operating pressure: 10 bar.• Pressurized vessels with streamline function.• DVGW and WRAS approved.• Observation port for diaphragm

rupture sensing.

Airfi x DE• 50 - 3,000 liters.• Max. operating pressure: 16 bar.• Pressurized vessels with streamline

function.• DVGW, ACS, WRAS and WRC

approved.• Electronic diaphragm-rupture sensor.


(RAL 9006).


(RAL 9006).

Airfi x P 500 - 5000• 500 - 5.000 liters.• Max. operating pressure: 10 bar.• Colour: grey (RAL 7040).• With feet from Airfi x P 750

upwards.

Airfi x P - Horizontal • Standard pre-charge: 3.5 bar.• Colour: aluminium-grey

(RAL 9006).

Airfi x DEB• 50 - 3,000 liters.• Max. operating pressure: 25 bar.• Pressurized vessels

(without streamline function).• WRAS and WRC approved.• Suitable for industrial use.

Airfi x 2 - 4• 2 - 4 liters.• Max. operating pressure: 5 bar.• Small pressurized vessels with

internal coating.

Airfi x A• 8 - 80 liters.• Max. operating pressure:

10 bar (8 - 25 liter) and 8 bar (35 - 80 liter).

• Pressurized vessels with streamline function.

• Suitable for mains-water systems.

Airfi x D• 8 - 35 liters.• Max. operating pressure: 10 bar.• Pressurized vessels with

advancedintegral streamline function.

• Includes T-piece.• Suitable for mains-water systems.

Fixed diaphragm


All Airfix A and Airfix D vessels are white in colour.

Assembling an AirfixControlbetween vessel and T-piece makes it possible to depressurise the Airfix vessel for maintenance purposes, without putting the system out of service.

Special rubber diaphragm and vessel coating have been internationally approved for use in combination with drinking water, in accordance with CE regulation 2002/16/EG.

Airfix D vessels use a specially supplied T-piece, with a flow-through design via an internal divider, to ensure complete flow-through of the vessel.

Internal coating prevents rust formation, even in the event of a defective diaphragm.

Reliable clamping ring construction that does not damage the vessel or the diaphragm and facilitates preservation of the entire vessel surface, which is not possible with scarfed vessels.

C E R T I F I E D

Airfi x A and D Expansion Vessels for Potable Water Systems

Internationally Used and Approved

Flamco has been delivering Airfix expansion vessels for many years now. Households all over the world are entirely used to such expansion vessels as part of their potable water system.

Our trademark white Airfix expansion vessels comply with set standards, which means they can be installed immediately.

Installers all over the world confirm how easy it is to install an Airfix expansion vessel from small homes to big utility buildings and, consequently, how easy it is for your client to save precious water and energy.

The Airfix vessel comes equipped with a plastic flow divider, suitable for T-pieces, for a continuous stream of max ¾" (22 mm).

This flow divider is placed in the T-piece (which does not come with the vessel).

The vessel must be installed in the supply line and a through-flow must be confirmed.AIRFIX A

Benefits of using Airfix expansion vessels• No waste of valuable potable water.• Continuous flow-through prevents bacterial growth.• Special rubber (EPDM) diaphragm does not add any colour, odour or taste to the water.• Corrosion-resistant coating inside.• Internationally approved and certified.

Altogether, households lose many millions of liters of drinking water every year due to expansion water slowly dripping away into the sewer.

The Airfix A and D expansion vessels, which can be used in storage boiler systems and pressure boosting systems, operate in such a way that the water flows right through and they are continuously flushed with fresh water from the mains. This prevents tepid, stagnant water from collecting in the vessel in which

bacterial growth could occur. Therefore, users can rely on high quality drinking water. The vessel has an internal epoxy coating, so that the water cannot come into contact with bare steel.

AIRFIX D

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All Airfix A and Airfix D vessels are white in colour.

Assembling an AirfixControlbetween vessel and T-piece makes it possible to depressurise the Airfix vessel for maintenance purposes, without putting the system out of service.

Special rubber diaphragm and vessel coating have been internationally approved for use in combination with drinking water, in accordance with CE regulation 2002/16/EG.

Airfix D vessels use a specially supplied T-piece, with a flow-through design via an internal divider, to ensure complete flow-through of the vessel.

Internal coating prevents rust formation, even in the event of a defective diaphragm.

Reliable clamping ring construction that does not damage the vessel or the diaphragm and facilitates preservation of the entire vessel surface, which is not possible with scarfed vessels.

C E R T I F I E D

Airfi x A and D Expansion Vessels for Potable Water Systems

Internationally Used and Approved

Flamco has been delivering Airfix expansion vessels for many years now. Households all over the world are entirely used to such expansion vessels as part of their potable water system.

Our trademark white Airfix expansion vessels comply with set standards, which means they can be installed immediately.

Installers all over the world confirm how easy it is to install an Airfix expansion vessel from small homes to big utility buildings and, consequently, how easy it is for your client to save precious water and energy.

The Airfix vessel comes equipped with a plastic flow divider, suitable for T-pieces, for a continuous stream of max ¾" (22 mm).

This flow divider is placed in the T-piece (which does not come with the vessel).

The vessel must be installed in the supply line and a through-flow must be confirmed.AIRFIX A

Benefits of using Airfix expansion vessels• No waste of valuable potable water.• Continuous flow-through prevents bacterial growth.• Special rubber (EPDM) diaphragm does not add any colour, odour or taste to the water.• Corrosion-resistant coating inside.• Internationally approved and certified.

Altogether, households lose many millions of liters of drinking water every year due to expansion water slowly dripping away into the sewer.

The Airfix A and D expansion vessels, which can be used in storage boiler systems and pressure boosting systems, operate in such a way that the water flows right through and they are continuously flushed with fresh water from the mains. This prevents tepid, stagnant water from collecting in the vessel in which

bacterial growth could occur. Therefore, users can rely on high quality drinking water. The vessel has an internal epoxy coating, so that the water cannot come into contact with bare steel.

AIRFIX D


Increase in temperature Increase in volume

10 - 40 °C 0.75%10 - 50 °C 1.18%10 - 60 °C 1.68%10 - 70 °C 2.25%

Basic Concepts for the Calculation of an Expansion Vessel in a Mains Water System

The following concepts are important in selecting the right vessel:

• System water capacityThe total capacity of the boiler system.

• Increase in water volume (in %)The table below shows data on the water volume increase in percentage points when the temperature of the water increases by between 10 °C and 70 °C.

Calculation for Airfi x Vesselsfor Mains Water Systems

• OutputThis is an expression of the ratio between gross and net vessel capacity.

Cold water supply pressure - Initial pressureI ––––––––––––––––––––––––––––––––––––––– = fill level Cold water supply pressure

This means that the residual factor of the vessel can be determined.

Residual factor = 1 - fill level.

The end pressure must be 10% lower than the set pressure of the safety valve.

The output is calculated using the formula below:

End Cold water pressure - supply pressureII –––––––––––––––––––––– x residual factor = output End pressureNote: pressure in bar absolute

The maximum permissible output for the Airfix D-E/D-E-B vessels is 60% (0.60), while for the A and D vessels it is 63% (0.63).

• End pressureThis is the maximum permissible pressure of the system at the vessel itself. The end pressure is equal to 90% of the set pressure of the Prescor boiler valve or the Prescor inlet assembly if it is mounted at the same level as the vessel.

• Gross vessel capacity The gross capacity of the vessel is determined in the following way:

expansion volumegross capacity of the vessel = ––––––––––––––––––––– output

• Expansion volumeThe expansion volume is determined in the following way: expansion volume = capacity x increase in volume at the maximum temperature.

• Fill levelThe pressure of the water supply when cold must be 0.2 bar above the initial pressure of the expansion vessel; otherwise, as the vessel cooled down the total water capacity would not be pushed out of the expansion vessel. That is why there must always be a residual amount of water in the vessel at the lowest operating pressure. This is called the fill level.

• Initial pressure of the vesselThis must be 0.2 bar under the pressure of the water supplied when cold.

• Residual factor1 - fill level:This determines the residual factor of the expansion vessel.

Example Calculation of Expansion Vessels for Mains Water Systems

Data- water capacity of the boiler = 150 litres- maximum water temperature = 70 °C- cold water supply pressure = 4 bar- safety valve set pressure = 8 bar- vessel initial pressure (4 - 0.2) = 3.8 bar- end pressure (mean) = 7.2 bar

Initial vessel pressure = Cold water supply pressure - 0.2 bar = 3.8End pressure (mean) = Set pressure of safety valve x 90% = 7.2 bar.

CalculationIncrease in volume: at 70 ºC is 2.25% = 150 x 2.25 % = 3.4 litres

(cold water supply pressure - initial pressure) (4.0 + 1.0) - (3.8 + 1.0) Fill level: ––––––––––––––––––––––––––––––––––––––– = –––––––––––––––––––– = 0.04 (cold water supply pressure) (4.0 + 1.0)

Residual factor: 1 - fill level= 1 - 0.04 = 0.96

(end pressure - cold water supply pressure) (7.2 + 1.0) - (4.0 + 1.0)Output: –––––––––––––––––––––––––––––––––––––– x residual factor = –––––––––––––––––––– x 0.96 = 0.375 (end pressure) (7.2 + 1.0)

Required gross capacity of expansion vessel: 3.4 / 0.375 = 9.1 litres

Airfix expansion vessel to select: Airfix A 12/4.0 (adjust initial pressure locally to 3.8 bar).

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Increase in temperature Increase in volume

10 - 40 °C 0.75%10 - 50 °C 1.18%10 - 60 °C 1.68%10 - 70 °C 2.25%

Basic Concepts for the Calculation of an Expansion Vessel in a Mains Water System

The following concepts are important in selecting the right vessel:

• System water capacityThe total capacity of the boiler system.

• Increase in water volume (in %)The table below shows data on the water volume increase in percentage points when the temperature of the water increases by between 10 °C and 70 °C.

Calculation for Airfi x Vesselsfor Mains Water Systems

• OutputThis is an expression of the ratio between gross and net vessel capacity.

Cold water supply pressure - Initial pressureI ––––––––––––––––––––––––––––––––––––––– = fill level Cold water supply pressure

This means that the residual factor of the vessel can be determined.

Residual factor = 1 - fill level.

The end pressure must be 10% lower than the set pressure of the safety valve.

The output is calculated using the formula below:

End Cold water pressure - supply pressureII –––––––––––––––––––––– x residual factor = output End pressureNote: pressure in bar absolute

The maximum permissible output for the Airfix D-E/D-E-B vessels is 60% (0.60), while for the A and D vessels it is 63% (0.63).

• End pressureThis is the maximum permissible pressure of the system at the vessel itself. The end pressure is equal to 90% of the set pressure of the Prescor boiler valve or the Prescor inlet assembly if it is mounted at the same level as the vessel.

• Gross vessel capacity The gross capacity of the vessel is determined in the following way:

expansion volumegross capacity of the vessel = ––––––––––––––––––––– output

• Expansion volumeThe expansion volume is determined in the following way: expansion volume = capacity x increase in volume at the maximum temperature.

• Fill levelThe pressure of the water supply when cold must be 0.2 bar above the initial pressure of the expansion vessel; otherwise, as the vessel cooled down the total water capacity would not be pushed out of the expansion vessel. That is why there must always be a residual amount of water in the vessel at the lowest operating pressure. This is called the fill level.

• Initial pressure of the vesselThis must be 0.2 bar under the pressure of the water supplied when cold.

• Residual factor1 - fill level:This determines the residual factor of the expansion vessel.

Example Calculation of Expansion Vessels for Mains Water Systems

Data- water capacity of the boiler = 150 litres- maximum water temperature = 70 °C- cold water supply pressure = 4 bar- safety valve set pressure = 8 bar- vessel initial pressure (4 - 0.2) = 3.8 bar- end pressure (mean) = 7.2 bar

Initial vessel pressure = Cold water supply pressure - 0.2 bar = 3.8End pressure (mean) = Set pressure of safety valve x 90% = 7.2 bar.

CalculationIncrease in volume: at 70 ºC is 2.25% = 150 x 2.25 % = 3.4 litres

(cold water supply pressure - initial pressure) (4.0 + 1.0) - (3.8 + 1.0) Fill level: ––––––––––––––––––––––––––––––––––––––– = –––––––––––––––––––– = 0.04 (cold water supply pressure) (4.0 + 1.0)

Residual factor: 1 - fill level= 1 - 0.04 = 0.96

(end pressure - cold water supply pressure) (7.2 + 1.0) - (4.0 + 1.0)Output: –––––––––––––––––––––––––––––––––––––– x residual factor = –––––––––––––––––––– x 0.96 = 0.375 (end pressure) (7.2 + 1.0)

Required gross capacity of expansion vessel: 3.4 / 0.375 = 9.1 litres

Airfix expansion vessel to select: Airfix A 12/4.0 (adjust initial pressure locally to 3.8 bar).


AIRFIX A

For use in potable water or fresh water installations.The inside of the Airfix vessel has a special coating which prevents oxidation. The composition of the diaphragm has been made for this range in such a way that there will be no variation in smell, colour or taste of the water. The famous Flexcon clench ring construction allows the water section to be coated before assembly.The Airfix A is fitted with a synthetic flow through device in a standard T-piece (included) which eliminates the formation of unwanted bacteria.

• Max. vessel temperature (bladder): 70 °C.• Max. working temperature (design): 70 °C.• Including flow through T-piece ¾".• Approvals: DVGW-W270

WRAS ACS PZH KIWA approved execution available on request.

Airfix A

Type Pre-charge[bar]

Max. work. press.[bar]

Dimensions Con-nection

Weight[kg]

OrderCode

Ø[mm]

H.[mm]

Airfix A 8 3 10 245 301 3/4" 3.2 50 24258Airfix A 8 4 10 245 301 3/4" 3.2 50 24259Airfix A 8 specify 10 245 301 3/4" 3.2 50 24257Airfix A 12 3 10 286 334 3/4" 4.3 36 24348Airfix A 12 4 10 286 334 3/4" 4.3 36 24349Airfix A 12 specify 10 286 334 3/4" 4.3 36 24347Airfix A 18 3 10 328 325 3/4" 4.9 24 24458Airfix A 18 4 10 328 325 3/4" 4.9 24 24459Airfix A 18 specify 10 328 325 3/4" 4.9 24 24457Airfix A 25 3 10 358 378 3/4" 6.6 18 24558Airfix A 25 4 10 358 378 3/4" 6.6 18 24559Airfix A 25 specify 10 358 378 3/4" 6.6 18 24557Airfix A 35 4 8 396 437 3/4" 8.1 18 24659Airfix A 35 specify 8 396 437 3/4" 8.1 18 24657Airfix A 50 4 8 437 473 3/4" 11.2 12 24749Airfix A 80 4 8 519 540 3/4" 15.0 12 24809

AIRFIX D

For use in potable water or fresh water installations.The inside of the Airfix vessel has a special coating which prevents oxidation. The composition of the diaphragm has been made for this range in such a way that there will be no variation in smell, colour or taste of the water. The famous Flexcon clench ring construction allows the water section to be coated before assembly.The Airfix D is fitted with a special synthetic full flow through device which eliminates the formation of unwanted bacteria.

• Max. vessel temperature (bladder): 70 °C.• Max. working temperature (design): 70 °C.• Including special full flow through device.• Approvals: DVGW-W270


Airfix D




Weight[kg]

OrderCode

Ø[mm]

H.[mm]

Airfix D 8 4 10 245 301 3/4" 3.2 50 14259Airfix D 12 4 10 286 334 3/4" 4.3 36 14349Airfix D 18 4 10 328 325 3/4" 4.9 24 14459Airfix D 25 4 10 358 378 3/4" 6.6 18 14559Airfix D 35 4 8 396 437 3/4" 8.1 18 14659

Nr. 0343

Nr. 0343

Instructions for Correct Fitting of Expansion Vessels in Hot Water Potable Systems

• Where an expansion vessel is used in a potable system, it must always be used in combination with a Prescor inlet assembly or Prescor B boiler valve.

• The expansion vessel must be fitted in the cold-water line, between the non-return valve and the boiler.

• The expansion vessel's initial pressure must be lower than the pressure in the cold-water line or the pressure behind a governor.

• The use of expansion vessels in boiler systems must always comply with the demands of the local water authority.

Airfix selection table

Boiler capacity [l]

Initial pressure [bar]

Prescor B boiler valve set pressure Prescor inlet assembly

6 bar 7 bar 8 bar 10 bar

100 3 Airfix 8/3 Airfix 8/3 Airfix 8/3 Airfix 8/3100 4 Airfix 12/4 Airfix 8/4 Airfix 8/4 Airfix 8/4150 3 Airfix 12/3 Airfix 8/3 Airfix 8/3 Airfix 8/3150 4 Airfix 18/4 Airfix 12/4 Airfix 12/4 Airfix 8/4200 3 Airfix 18/3 Airfix 12/3 Airfix 12/3 Airfix 8/3200 4 Airfix 25/4 Airfix 18/4 Airfix 18/4 Airfix 12/4250 3 Airfix 18/3 Airfix 18/3 Airfix 12/3 Airfix 12/3250 4 Airfix 35/4 Airfix 25/4 Airfix 18/4 Airfix 12/4300 3 Airfix 25/3 Airfix 18/3 Airfix 18/3 Airfix 12/3300 4 Airfix 35/4 Airfix 25/4 Airfix 25/4 Airfix 18/4

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AIRFIX A

For use in potable water or fresh water installations.The inside of the Airfix vessel has a special coating which prevents oxidation. The composition of the diaphragm has been made for this range in such a way that there will be no variation in smell, colour or taste of the water. The famous Flexcon clench ring construction allows the water section to be coated before assembly.The Airfix A is fitted with a synthetic flow through device in a standard T-piece (included) which eliminates the formation of unwanted bacteria.

• Max. vessel temperature (bladder): 70 °C.• Max. working temperature (design): 70 °C.• Including flow through T-piece ¾".• Approvals: DVGW-W270


Airfix A




Weight[kg]

OrderCode

Ø[mm]

H.[mm]

Airfix A 8 3 10 245 301 3/4" 3.2 50 24258Airfix A 8 4 10 245 301 3/4" 3.2 50 24259Airfix A 8 specify 10 245 301 3/4" 3.2 50 24257Airfix A 12 3 10 286 334 3/4" 4.3 36 24348Airfix A 12 4 10 286 334 3/4" 4.3 36 24349Airfix A 12 specify 10 286 334 3/4" 4.3 36 24347Airfix A 18 3 10 328 325 3/4" 4.9 24 24458Airfix A 18 4 10 328 325 3/4" 4.9 24 24459Airfix A 18 specify 10 328 325 3/4" 4.9 24 24457Airfix A 25 3 10 358 378 3/4" 6.6 18 24558Airfix A 25 4 10 358 378 3/4" 6.6 18 24559Airfix A 25 specify 10 358 378 3/4" 6.6 18 24557Airfix A 35 4 8 396 437 3/4" 8.1 18 24659Airfix A 35 specify 8 396 437 3/4" 8.1 18 24657Airfix A 50 4 8 437 473 3/4" 11.2 12 24749Airfix A 80 4 8 519 540 3/4" 15.0 12 24809

AIRFIX D

For use in potable water or fresh water installations.The inside of the Airfix vessel has a special coating which prevents oxidation. The composition of the diaphragm has been made for this range in such a way that there will be no variation in smell, colour or taste of the water. The famous Flexcon clench ring construction allows the water section to be coated before assembly.The Airfix D is fitted with a special synthetic full flow through device which eliminates the formation of unwanted bacteria.

• Max. vessel temperature (bladder): 70 °C.• Max. working temperature (design): 70 °C.• Including special full flow through device.• Approvals: DVGW-W270


Airfix D




Weight[kg]

OrderCode

Ø[mm]

H.[mm]

Airfix D 8 4 10 245 301 3/4" 3.2 50 14259Airfix D 12 4 10 286 334 3/4" 4.3 36 14349Airfix D 18 4 10 328 325 3/4" 4.9 24 14459Airfix D 25 4 10 358 378 3/4" 6.6 18 14559Airfix D 35 4 8 396 437 3/4" 8.1 18 14659

Nr. 0343

Nr. 0343


Well-designed Airfi x Technology Offers Users Signifi cant Benefi tsDiaphragm pressure expansion vessels with removable diaphragms are suitable for use in hot water, boosted and water-supply systems.The Airfix D-E expansion vessel can be used in

The Airfix D-E expansion vessel collects the water in its butyl-rubber bladder. Should the system pressure rise (when the pump starts up or water is no longer being drawn off) the vessel will take in water which will collect in the diaphragm; should the system pressure drop (if water is drawn off), this water will be recirculated into the draw off line. The flow rate through the vessel is coupled with a minimal loss of pressure.

Airfix D-E-BFor domestic, process or extinguishing systems, with a coated steel single threaded connection as standard .

boosted systems either on the suction side or the discharge side of the pumps. These systems are designed to prevent low pressures and changes in pressure at low flow rates.

Airfix D-E-LStreamlined flow through diaphragm pressure expansion vessel for use in pressurising, water supply and drinking-water systems.

Benefits Airfix D-E• Vessel flow through.• Low pressure drop.• The standard diaphragm-rupture sensor may be

configured for remote-control read-out.• Easy to install, with a long service life.• All vessels are ACS-certified.

AIRFIX D-E-B AIRFIX D-E-L

AIRFIX D-E

Airfix D-EFlow through design. The coated two-way flanged system connection is directly connected to the flow of the mains water line.

Pressure gauge with self-sealing reducer, vessel connection Rp 3/8" DIN 2999-1.

Diaphragm-rupture sensor, red LED light to indicate diaphragm rupture.

Normal permissible initial gas pressure in delivery condition: 6 bar.

Airfix D-E vessels have a green external coating.

Coated two-way connection for the system pipework.

Airfix D-E: sturdy, reliable and easy to installThe Airfix D-E is a flow through vessel with two flanged connections and is equipped with a removable butyl-rubber bladder. The Airfix D-E is fitted with an electronic diaphragm-rupture sensor as standard and has an internally-coated steel flow through flange.

AIRFIX D-E

Benefits Airfix P• A wide-ranging line, suitable for many different uses.• Available in both vertical and horizontal models.• All vessels are WRAS and ACS-certified.

AIRFIX P 500

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Well-designed Airfi x Technology Offers Users Signifi cant Benefi tsDiaphragm pressure expansion vessels with removable diaphragms are suitable for use in hot water, boosted and water-supply systems.The Airfix D-E expansion vessel can be used in

The Airfix D-E expansion vessel collects the water in its butyl-rubber bladder. Should the system pressure rise (when the pump starts up or water is no longer being drawn off) the vessel will take in water which will collect in the diaphragm; should the system pressure drop (if water is drawn off), this water will be recirculated into the draw off line. The flow rate through the vessel is coupled with a minimal loss of pressure.

Airfix D-E-BFor domestic, process or extinguishing systems, with a coated steel single threaded connection as standard .

boosted systems either on the suction side or the discharge side of the pumps. These systems are designed to prevent low pressures and changes in pressure at low flow rates.

Airfix D-E-LStreamlined flow through diaphragm pressure expansion vessel for use in pressurising, water supply and drinking-water systems.

Benefits Airfix D-E• Vessel flow through.• Low pressure drop.• The standard diaphragm-rupture sensor may be

configured for remote-control read-out.• Easy to install, with a long service life.• All vessels are ACS-certified.

AIRFIX D-E-B AIRFIX D-E-L

AIRFIX D-E

Airfix D-EFlow through design. The coated two-way flanged system connection is directly connected to the flow of the mains water line.

Pressure gauge with self-sealing reducer, vessel connection Rp 3/8" DIN 2999-1.

Diaphragm-rupture sensor, red LED light to indicate diaphragm rupture.

Normal permissible initial gas pressure in delivery condition: 6 bar.

Airfix D-E vessels have a green external coating.

Coated two-way connection for the system pipework.

Airfix D-E: sturdy, reliable and easy to installThe Airfix D-E is a flow through vessel with two flanged connections and is equipped with a removable butyl-rubber bladder. The Airfix D-E is fitted with an electronic diaphragm-rupture sensor as standard and has an internally-coated steel flow through flange.

AIRFIX D-E

Benefits Airfix P• A wide-ranging line, suitable for many different uses.• Available in both vertical and horizontal models.• All vessels are WRAS and ACS-certified.

AIRFIX P 500


The system can be used for the following applications:a. In small independent mains-water systems which

draw water from an aquifer or well.b. in systems which, although they are connected to a

water main, are so far from a pumping station or water tower that pressure must be boosted locally.

The pressure expansion vessel is used to maintain uniform pressure in the system in combination with a pressure switch that activates and deactivates the pump. If the pressure expansion vessel in question has a greater capacity than required for the aforementioned use, it can also be used as a storage vessel. In this respect, the pump does not have to be activated when small amounts are removed by the system, increasing the pump's overall service life.

The cut-in pressure of the pressure switch should preferably be set 0.2 bar higher than the expansion vessel's initial pressure. The cut-in pressure for a expansion vessel with 3.0 bar initial pressure is therefore 3.2 bar.

Airfi x Expansion Vessel Calculation for Pressure Boosting Sets (Mains water)

Selecting the appropriate Airfix expansion vessel

Two factors play an important role in the choice of an expansion vessel. The first consideration is the total flow requirements of the system. This determines the pump capacity, which can be used as the basis for the calculation. The second factor of importance is the time the pump needs to top up the expansion vessel from minimum to maximum pressure.

If the smaller pressure expansion vessel is selected, the switching frequency of the pump will increase significantly which, in turn, will have an adverse effect on the pump's service life.If you need to discharge small amounts of water often without the pump cutting in, choose a greater value for time; the value of V, the capacity of the pressure expansion vessel will, accordingly, rise too.

Mains water systems, particularly those which draw water from an aquifer or well, have relatively high levels of air. Thus, the pressure expansion vessel must be fitted so that there is no chance of an 'air cushion' forming at the diaphragm.

The pressure expansion vessel is filled with a controlled throughput.We recommend fitting a pressure regulator.

The pressure expansion vessel will then also work as a storage vessel. In this situation, we recommend using a flow-through Airfix vessel.For larger capacity vessels it is possible to connect more than one pressure expansion vessel in parallel.

The size of the pressure expansion vessel can be calculated using the following formula:

Qu + Qi pu + 1 pi + 1V = 0.278 x = –––––– x –––––– x –––––– x t 2 pu – pi pv + 1

This formula uses the following parameters:V = capacity of the pressure expansion vessel in litres.Qu = pump output at cut-out pressure in m3/h.Qi = pump output at cut-in pressure in m3/h.pu = pressure switch cut-out pressure in bar (abs.).pi = pressure switch cut-in pressure in bar (abs.).pv = initial pressure of the pressure expansion vessel in bar (abs.).t = time in seconds during which the vessel can be drained without the pump cutting in.If V is between the capacity values of two pressure expansion vessels, the larger of the two must always be selected.

Instructions on how to install pressure expansion vessels for potable appliances in pressure boosting sets

Shut off valve

PumpNon-return valve

Reducer valve

Pressure switch

Pressure gauge

Shut off valve

Non-return valvePS

Airfix A/D

Gas fill valve/inspection connection

Airfix D-E

Pressure gauge

Shut off valve

Drain cock

Non-return valve

Non-return valve To the system

Control valve

PumpShut off valve

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The system can be used for the following applications:a. In small independent mains-water systems which

draw water from an aquifer or well.b. in systems which, although they are connected to a

water main, are so far from a pumping station or water tower that pressure must be boosted locally.

The pressure expansion vessel is used to maintain uniform pressure in the system in combination with a pressure switch that activates and deactivates the pump. If the pressure expansion vessel in question has a greater capacity than required for the aforementioned use, it can also be used as a storage vessel. In this respect, the pump does not have to be activated when small amounts are removed by the system, increasing the pump's overall service life.

The cut-in pressure of the pressure switch should preferably be set 0.2 bar higher than the expansion vessel's initial pressure. The cut-in pressure for a expansion vessel with 3.0 bar initial pressure is therefore 3.2 bar.

Airfi x Expansion Vessel Calculation for Pressure Boosting Sets (Mains water)

Selecting the appropriate Airfix expansion vessel

Two factors play an important role in the choice of an expansion vessel. The first consideration is the total flow requirements of the system. This determines the pump capacity, which can be used as the basis for the calculation. The second factor of importance is the time the pump needs to top up the expansion vessel from minimum to maximum pressure.

If the smaller pressure expansion vessel is selected, the switching frequency of the pump will increase significantly which, in turn, will have an adverse effect on the pump's service life.If you need to discharge small amounts of water often without the pump cutting in, choose a greater value for time; the value of V, the capacity of the pressure expansion vessel will, accordingly, rise too.

Mains water systems, particularly those which draw water from an aquifer or well, have relatively high levels of air. Thus, the pressure expansion vessel must be fitted so that there is no chance of an 'air cushion' forming at the diaphragm.

The pressure expansion vessel is filled with a controlled throughput.We recommend fitting a pressure regulator.

The pressure expansion vessel will then also work as a storage vessel. In this situation, we recommend using a flow-through Airfix vessel.For larger capacity vessels it is possible to connect more than one pressure expansion vessel in parallel.

The size of the pressure expansion vessel can be calculated using the following formula:

Qu + Qi pu + 1 pi + 1V = 0.278 x = –––––– x –––––– x –––––– x t 2 pu – pi pv + 1

This formula uses the following parameters:V = capacity of the pressure expansion vessel in litres.Qu = pump output at cut-out pressure in m3/h.Qi = pump output at cut-in pressure in m3/h.pu = pressure switch cut-out pressure in bar (abs.).pi = pressure switch cut-in pressure in bar (abs.).pv = initial pressure of the pressure expansion vessel in bar (abs.).t = time in seconds during which the vessel can be drained without the pump cutting in.If V is between the capacity values of two pressure expansion vessels, the larger of the two must always be selected.

Instructions on how to install pressure expansion vessels for potable appliances in pressure boosting sets

Shut off valve

PumpNon-return valve

Reducer valve

Pressure switch

Pressure gauge

Shut off valve

Non-return valvePS

Airfix A/D

Gas fill valve/inspection connection

Airfix D-E

Pressure gauge

Shut off valve

Drain cock

Non-return valve

Non-return valve To the system

Control valve

PumpShut off valve


AIRFIX D-E

High quality vessels for use in all (potable) water installations.

Its special flow through construction eliminates the formation of unwanted bacteria. The composition of the diaphragms has been made for this range in such a way that there will be no variation in smell, colour or taste. The inside of the Airfix connection flange has a special coating which prevents oxidation.

• Replaceable bladder.• Electronic diaphragm rupture sensor.• With flange connection.• Max. working temperature: 70 °C.• Material quality: - ASTM/ISO: A181 class 60 / S235JRG2. - EN/ISO: P245N.• ACS certified.

Airfix D-E - 10.0 bar

• Maximum operating pressure: 10.0 bar.

Type Capa-city[l]

Dimensions Flanges *(2x)

Weight[kg]

OrderCode

Ø[mm]

H.[mm]

Airfix D-E 50 50 450 836 DN 40 60 1 14700Airfix D-E 80 80 450 1016 DN 40 70 1 14800Airfix D-E 120 120 450 1271 DN 40 80 1 14812Airfix D-E 180 180 550 1227 DN 40 110 1 14818Airfix D-E 240 240 550 1487 DN 40 130 1 14824Airfix D-E 300 300 550 1827 DN 40 150 1 14830Airfix D-E 600 600 750 1840 DN 50 230 1 14860Airfix D-E 800 800 750 2230 DN 50 270 1 14880Airfix D-E 1000 1000 750 2730 DN 50 320 1 14910Airfix D-E 1600 1600 1000 2663 DN 80 550 1 14916Airfix D-E 2000 2000 1200 2412 DN 80 620 1 14920Airfix D-E 3000 3000 1200 3312 DN 80 805 1 14930

* According to EN 1092-1 PN16.

Airfix D-E - 16.0 bar


Type Capa-city[l]

Dimensions Flanges *(2x)

Weight[kg]

OrderCode

Ø[mm]

H.[mm]

Airfix D-E 50 50 450 839 DN 40 70 1 14701Airfix D-E 80 80 450 1019 DN 40 80 1 14801Airfix D-E 120 120 450 1274 DN 40 95 1 14813Airfix D-E 180 180 550 1238 DN 40 135 1 14819Airfix D-E 240 240 550 1498 DN 40 160 1 14825Airfix D-E 300 300 550 1838 DN 40 190 1 14831Airfix D-E 600 600 750 1843 DN 50 300 1 14861Airfix D-E 800 800 750 2233 DN 50 350 1 14881Airfix D-E 1000 1000 750 2733 DN 50 415 1 14911Airfix D-E 1600 1600 1000 2682 DN 80 610 1 14917Airfix D-E 2000 2000 1200 2425 DN 80 680 1 14921Airfix D-E 3000 3000 1200 3335 DN 80 890 1 14931

* According to EN 1092-1 PN16.

Remote Signaller for Diaphragm Rupture Sensor

Remote signaller for diaphragm rupture sensor for Airfix D-E expansion vessels.Only with this appliance it is possible to have a remote signal from the rupture sensor of the Airfix D-E.

Type OrderCode

Remote bladder rupture detector (ordered seperately) 1 14020

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AIRFIX D-E-L

Standard vessels for use in all (potable) water installations. The construction also permits use in closed HVAC installations with a maximum temperature of 70 °C.

Its special flow-through construction eliminates the formation of unwanted bacteria. The composition of the diaphragms has been made for this range in such a way that there will be no variation in smell, colour or taste. The inside of the Airfix vessel has a special coating which prevents oxidation.

• Replaceable bladder.• Visual bladder rupture indication by sight-glass.• Max. operating pressure: 10.0 bar.• Max. working temperature: 70 °C.• Material quality: - ASTM/ISO: A181 class 60 / S235JRG2. - EN/ISO: P245N.

Airfix D-E-L

Type Capa-city[l]

Dimensions Connection Weight[kg]

OrderCode

Ø[mm]

H.[mm]

Airfix D-E-L 50 50 450 845 G 1 1/4" 60 1 14702Airfix D-E-L 80 80 450 1025 G 1 1/4" 70 1 14802Airfix D-E-L 120 120 450 1280 G 1 1/4" 80 1 14814Airfix D-E-L 180 180 550 1235 G 1 1/4" 110 1 14820Airfix D-E-L 240 240 550 1495 G 1 1/4" 130 1 14826Airfix D-E-L 300 300 550 1835 G 1 1/4" 150 1 14832Airfix D-E-L 600 600 750 1850 G 1 1/4" 230 1 14862


Airfix D-E-B - 25.0 bar


Type Capa-city[l]

Dimensions Connection(F)

Weight[kg]

OrderCode

Ø[mm]

H.[mm]

Airfix D-E-B 50 50 450 830 1 1/2" 59 1 14705Airfix D-E-B 80 80 450 1010 1 1/2" 71 1 14805Airfix D-E-B 120 120 450 1265 1 1/2" 87 1 14811Airfix D-E-B 180 180 550 1255 1 1/2" 123 1 14817Airfix D-E-B 240 240 550 1515 1 1/2" 149 1 14829Airfix D-E-B 300 300 550 1855 1 1/2" 182 1 14835Airfix D-E-B 600 600 750 1840 2" 349 1 14865Airfix D-E-B 800 800 750 2230 2" 417 1 14885Airfix D-E-B 1000 1000 750 2730 2" 500 1 14905Airfix D-E-B 1600 1600 1000 2680 2 1/2" 747 1 14915Airfix D-E-B 2000 2000 1200 2400 2 1/2" 957 1 14925Airfix D-E-B 3000 3000 1200 3300 2 1/2" 1288 1 14935

AIRFIX D-E(B) SEPARATE CONNECTIONS

• Material quality stainless steel executions: AISI 304.

Mono Connections

Type Capacity[l]

Connection OrderCode

Mono small - Stainless steel 50 - 300 G 1 1/2" 1 14960Mono medium - Stainless steel 600 - 1000 G 2" 1 14961Mono large - Stainless steel 1600 - 3000 G 2 1/2" 1 14962Mono small - Coated steel 50 - 300 G 1 1/2" 1 14955Mono medium - Coated steel 600 - 1000 G 2" 1 14956Mono large - Coated steel 1600 - 3000 G 2 1/2" 1 14957

Duo Connections

Stainless steel: AISI 304.

Type Capacity[l]


Vessel System *

Duo small - Stainless steel 50 - 300 G 1 1/2" PN16 DN40 1 14950Duo medium - Stainless steel 600 - 1000 G 2" PN16 DN50 1 14951Duo large - Stainless steel 1600 - 3000 G 2 1/2" PN16 DN80 1 14952

* According to EN 1092-1 PN 16.

AIRFIX D-E-B

Standard vessels for use in all (potable) water installations. The construction also permits use in closed HVAC installations with a maximum temperature of 70 °C.

The composition of the bladder has been made for this range in such a way that there will be no variation in smell, colour or taste. The inside of the Airfix connection flange has a special coating which prevents oxidation.

• Replaceable bladder.• With single threaded steel connection (no flow-through function).• Max. working temperature: 70 °C.• Material quality: - ASTM/ISO: A181 class 60 / S235JRG2. - EN/ISO: P245N.• ACS certified.



Type Capa-city[l]


Weight[kg]

OrderCode

Ø[mm]

H.[mm]




Type Capa-city[l]


Weight[kg]

OrderCode

Ø[mm]

H.[mm]


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Type Capa-city[l]


Weight[kg]

OrderCode

Ø[mm]

H.[mm]


AIRFIX D-E(B) SEPARATE CONNECTIONS

• Material quality stainless steel executions: AISI 304.

Mono Connections

Type Capacity[l]


Mono small - Stainless steel 50 - 300 G 1 1/2" 1 14960Mono medium - Stainless steel 600 - 1000 G 2" 1 14961Mono large - Stainless steel 1600 - 3000 G 2 1/2" 1 14962Mono small - Coated steel 50 - 300 G 1 1/2" 1 14955Mono medium - Coated steel 600 - 1000 G 2" 1 14956Mono large - Coated steel 1600 - 3000 G 2 1/2" 1 14957

Duo Connections

Stainless steel: AISI 304.

Type Capacity[l]


Vessel System *

Duo small - Stainless steel 50 - 300 G 1 1/2" PN16 DN40 1 14950Duo medium - Stainless steel 600 - 1000 G 2" PN16 DN50 1 14951Duo large - Stainless steel 1600 - 3000 G 2 1/2" PN16 DN80 1 14952

* According to EN 1092-1 PN 16.


AIRFIX P

Potable water expansion vessels for use in domestic and commercial sealed chilled and hot water systems.

• Designed to incorporate a unique contoured, replaceable bladder.• Standard gas charge: 3.5 bar.

Airfix P 2 - 35

• Maximum working pressure: 10.0 bar.• Colour: coated grey (RAL 9006).• WRAS and ACS certified.

Type Capa-city[l]


(M)

Weight[kg]

Diaphragm OrderCode

Ø[mm]

H.[mm]

Airfix P 2 2 120 235 1/2" 4,6 * Butyl 336 24850Airfix P 3 3 170 240 3/4" 1.5 Butyl 168 24851Airfix P 5 5 170 275 3/4" 1.7 Butyl 144 24852Airfix P 8 8 220 305 3/4" 2.2 Butyl 90 24853Airfix P 12 12 260 310 3/4" 2.9 Butyl 72 24854Airfix P 16 16 260 345 3/4" 3.4 EPDM 60 24855Airfix P 18 18 260 375 3/4" 3.5 EPDM 60 24856Airfix P 24 24 260 485 3/4" 4.3 EPDM 56 24857Airfix P 35 35 380 470 1" 8.0 EPDM 24 24858

* Set of four in one box.

Airfix P 50 - 300

• Maximum operating pressure: 10.0 bar.• Colour: coated grey (RAL 9006).• WRAS and ACS certified.

Type Capacity[l]

Dimensions Connection(M)

Weight[kg]

OrderCode

Ø[mm]

H.[mm]

Airfix P 50 50 380 720 1" 9.9 15 24859Airfix P 60 60 380 830 1" 12.1 15 24860Airfix P 80 80 460 760 1" 14.0 10 24861Airfix P 100 100 460 880 1" 16.0 10 24862Airfix P 150 150 510 1030 1" 25.5 8 24863Airfix P 200 200 590 1070 1 1/4" 37.5 8 24864Airfix P 300 300 650 1250 1 1/4" 50.5 3 24865

Nr. 1370

Nr. 1370

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Airfix P 500 - 3000

• Maximum operating pressure: 10.0 bar.• Colour: coated grey (RAL 7040).• Airfix P 750 - 3,000 supplied with feet.

Type Capa-city[l]

Dimensions Connection(M)

Weight[kg]

Dia-phragm

OrderCode

Ø[mm]

H.[mm]

Airfix P 500 * 500 650 1780 R 1 1/2" 86 EPDM 1 24866Airfix P 750 750 750 2035 R 1 1/2" 128 EPDM 1 24867Airfix P 1000 1000 750 2535 Rp 2" 163 Butyl 1 24868Airfix P 1500 1500 1000 2510 Rp 2 1/2" 423 Butyl 1 24869Airfix P 2000 2000 1100 2745 Rp 2 1/2" 483 Butyl 1 24870Airfix P 2500 2500 1200 3295 Rp 2 1/2" 537 Butyl 1 24871Airfix P 3000 3000 1200 3425 Rp 2 1/2" 766 Butyl 1 24872Airfix P 5000 5000 1500 3615 Rp 2 1/2" 1620 Butyl 1 24873

* WRAS and ACS certified.

Airfix P Horizontal

• Maximum operating pressure: 10.0 bar.• Colour: coated grey (RAL 9006).• WRAS and ACS certified.

Type Max. working pressure

[bar]

Capa-city[l]


(M)

Weight[kg]

OrderCode

Ø[mm]

H.[mm]

Airfix P 24-H 8 24 260 485 3/4" 4.7 56 24880Airfix P 50-H 10 50 380 595 1" 8.1 20 24890Airfix P 60-H 10 60 380 720 1" 10.4 15 24881Airfix P 80-H 10 80 460 660 1" 12.3 12 24882Airfix P 100-H 10 100 460 780 1" 14.0 12 24883Airfix P 150-H 10 150 510 950 1" 23.5 6 24884Airfix P 200-H 10 200 590 940 1 1/4" 34.2 6 24885Airfix P 300-H 10 300 650 1150 1 1/4" 44.0 6 24886Airfix P 500-H 10 500 750 1420 1 1/4" 58.0 6 24887 Nr. 1370

Documents

Expansion Vessels for Potable Installations - Flamco Group · PDF file• Special rubber (EPDM) diaphragm does not add any colour, odour or taste to the water. ... used in storage