1. Foam Pourer2. Foam Makers3. High Back Pressure4. Bladder Tanks5. Foam Porportioner6. Foam Monitor

Firefighting GroupFoam Systems

78Persian GPE

Application:GPE Rim seal Foam Pourers are used for the protection of vertical open top floating roof (OTFR) storage tanks and comprises two elements – the Rim Seal Foam Generator (RFG) which produces expanded foam when supplied with foam solution and the Rim seal foam pourer (RFP) which delivers the foam gently into the rimseal area.

Available in two basic body sizes, with capacities ranging from 54 liters/minute at 4 bar to 220 liters/minute at 10 bar, each unit is factory-calibrated to deliver a specified flow at a given pressure upon customer design.

Rim Seal Foam Pourer

Features and Benefits:• The RFP is a low-profile unit which protects the foam from

high winds and guides it gently on to the tank wall. • The front shield allows fully developed foam to emerge in

a cohesive blanket that flows intact onto the inside wall of the tank.

• The stainless steel mesh at the foam exit helps to prevent blockage from insects and nesting birds.

• For new tanks, the new models can make the most cost-effective use of foam concentrate and water resources by producing the designed foam solution application rate. For retrofit onto existing tanks during refurbishment, The GPE RFG models can replace existing units without the need for expensive modification. Accurate GPE-calibration ensures full compatibility with existing foam concentrate induction systems.

• To further simplify installation, a fixing kit is now supplied as an optional extra which facilitates installation to the tank whilst still in use and without the need for hot work.

• GPE Rim Seal Foam Pourer is suitable for use with low expansion foam concentrates.

• Model No. 6010• Operating Pressure 4 to 10 bar• Flow Rate 60 to 220 Lit/min• Easy Maintenance

79 Persian GPE

• Model No. 6020• Operating Pressure 2.5 to 10 bar• For Fixed Roof Storage Tank• Easy Maintenance

• TPF units are fitted with a unique bursting disc fabricated from impregnated graphite to seal the tank and prevent vapor loss. Graphite is used to ensure that the disc will burst when subjected to the pressure of foam entering the top chamber but will not burst during normal tank operations such as filling and discharging. The use of graphite enables the bursting pressure to be held within tolerances of ± 0.05 bar (± 0.75 Psi).

Application:The GPE Top Pourer Foam Maker(TPF) is designed for use in foam systems for the protection of flammable liquid storage tanks and combine foam generation, vapor sealing and foam pouring in a robust, low-maintenance integral unit.

Features and Benefits:• There are four basic body sizes with capacities

ranging from 75 to 3,300 liters/min. at inlet pressures between 3 and 10 bar g. Each unit is factory calibrated to perform at a fixed flow and pressure point within the limits shown over its name plate. Then the system is therefore able to make the most cost effective use of available water and foam concentrate resources.

• The discharge characteristics of the TPF are enhanced by the deflector plate fitted to the outlet which disperses the finished foam against the tank interior shell. This ensures a rapid spread across the surface of the tank content, whilst lowering the application velocity to reduce contamination of the foam by the tank content.

Top Pourer Foam Maker (TPF)(Foam Chamber)

80Persian GPE

Application:The GPE Top Pourer Foam Maker (TPFM) is designed for use in foam systems for the protection of flammable liquid storage tanks and combine foam generation, vapor sealing and foam pouring in a robust, low-maintenance integral unit.

Top Pourer Foam Maker (TPFM)(Foam Chamber)

Features and Benefits:• There are four basic body sizes with capacities

ranging from 75 to 3,300 liters/min. at inlet pressures between 3 and 10 bar g. Each unit is factory calibrated to perform at a fixed flow and pressure point within the limits shown over its name plate. Then the system is therefore able to make the most cost effective use of available water and foam concentrate resources. The discharge characteristics of the TPF are enhanced by the deflector plate fitted to the outlet which disperses the finished foam against the tank interior shell. This ensures a rapid spread across the surface of the tank content, whilst lowering the application velocity to reduce contamination of the foam by the tank content.

• TPF units are fitted with a unique bursting disc fabricated from impregnated graphite to seal the tank and prevent vapor loss. Graphite is used to ensure that the disc will burst when subjected to the pressure of foam entering the top chamber but will not burst during normal tank operations such as filling and discharging. The use of graphite enables the bursting pressure to be held within tolerances of ± 0.05 bar (± 0.75 Psi).

• Model No. 6025• Operating Pressure 2.5 to 10 bar• For Fixed Roof Storage Tank• Easy Maintenance

81 Persian GPE

• Model No. 6030• Operating Pressure 2.5 to 10 bar• For Internal Floating Roof Storage Tank• Easy Maintenance

Features and Benefits:• There are two basic body sizes with capacities

ranging from 75 to 3,300 liters/min. at inlet pressures between 3 and 10 bar g. Each unit is factory calibrated to perform at a fixed flow and pressure point within the limits shown over its name plate. The system designer is therefore able to make the most cost effective use of available water and foam concentrate resources.

• The discharge characteristics of the TPI are enhanced by the deflector plate fitted to the outlet which disperses the finished foam against the tank interior shell. This ensures a rapid spread across the surface of the tank content, whilst lowering the application velocity to reduce contamination of the foam by the tank content.

• TPI units are fitted with a unique bursting disc fabricated from impregnated graphite to seal the tank and prevent vapor loss. Graphite is used to ensure that the disc will burst when subjected to the pressure of foam entering the top chamber but will not burst during normal tank operations such as filling and discharging. The use of graphite enables the bursting pressure to be held within tolerances of ± 0.05 bar (± 0.75 Psi).

Application:The GPE Top Pourer Foam Maker for internal floating roof tanks(TPI) is designed for use in foam systems for the protection of flammable liquid storage tanks and combine foam generation, vapor sealing and foam pouring in a robust, low-maintenance integral unit.

Top Pourer Foam Maker(Internal Floating Roof) (TPI)

82Persian GPE

Foam High Back Pressure

pressure pump proportioning systems, in-line balanced pressure proportioning systems, and foam trucks. (Line proportioning systems are usually unacceptable due to the relatively high pressure loss across the line proportioner except in instances where back pressure to the foam maker is low and available water pressure to the line proportioner is relatively high.)

• Model No. 6080• Designed to operate with total back pressure

as high as %40 of inlet pressure• Standard Inlet & Outlet ANSI 150 R.F Flanges

Application:• PERSIAN GPE High Back-Pressure Foam

Makers (HBPFM) is designed to generate expanded foam for the purpose of subsurface injection into a cone-roof liquid hydrocarbon storage tank. This unique foam maker is typically located outside the dike area surrounding the storage tank. Expanded foam is injected through a dedicated foam line or into a product line to the storage tank.

• The high back-pressure foam maker is capable of generating expanded foam within the optimum expansion ratio range of 2:1 to 4:1 for subsurface injection. The foam maker can discharge against a back pressure as high as 40% of the operating inlet pressure.

• A minimum foam maker inlet pressure of 100 psi (6.9 bar) is typically required for satisfactory operation.

• High back-pressure foam makers can be used with various types of proportioning equipment including bladder tanks, balanced

83 Persian GPE

Foam Branch Pipe(Low Expansion)

Application:• and is added into the water stream. • The controller body is clearly marked with

a flow direction arrow and label to identify the type of foam concentrate and injection percentage ratio.

• The Persian GPE series of low expansion foam branch pipe has been designed with long range performance in mind. There are three basic models with nominal foam solution throughputs of 225, 450 and 900 liters/mm at 7 bar. Self- inducing models are available in the 225 and 450 liters/minute versions. All models produce finished foams of nominal expansion 10 : 1 and give foam streams of an exceptional range. To get the best results from these branch pipes we recommend use with either FP70 Plus Fluor protein foam or Alco seal AR-FFFP multi-purpose foam concentrate.

• Foam concentrate is drawn through a pick up tube at a present foam concentrate amount

Materials: • Body: Aluminum/ stainless steel 316• Finish: Yellow Epoxy Polyester/ Natural• Nozzle: Aluminum /Gunmetal • Inlet: L225 - 2” BS Male • L450 - 2” BS Male• L900 - 2½” BS Male• A wide range of international fittings are

available as an optional.

• Foam Branch Pipe (Low Expansion)• Model No. 6200• Long Throw• Self-Inducing Model• Various Flow Rate Model Available• Design for all new technology foam

84Persian GPE

• Model No. 6500• Capacity 1000 to 10000 Liters

Application:• The Persian GPE Bladder-Tank System works

without any external energy supply. The concentrated foams stored in a rubber bag, which is placed inside the tank, and because of water which come from the main water line under pressure, the bladder in flutes and expanded is pushed out of the bladder through axial perforated pipe. On request welding on the body shall be according to the ASME standards. Concentrate from a pipe, and downstream after the Proportioner the premix has the right mixing rate. The bladder tank is equipped with vent valves, water and concentrate drain/fill valves, vessel support mounts, discharge pipe and a safety valve to protect it from overpressure.

Horizontal Bladder Tanks

• The center discharge piping, located within the bladder, insures that the foam concentrate flows to the upper discharge.

• During operation, water supplied from the system fills the area outside of the bladder, gradually displacing the foam concentrate inside the bladder causing the bladder to collapse until the supply is exhausted. The bladder discharges foam concentrate for the remotely mounted ratio controller at approximately the same pressure as the water supply. Since the bladder tank system is pressurized during operation, the bladder can be refilled with concentrate only when system is not in use.

85 Persian GPE

• Model No. 6510• Capacity 200 to 10000 Liters

Application:• The Persian GPE Bladder-Tank System works

without any external energy supply. The concentrated foams stored in a rubber bag, which is placed inside the tank, and because of water which come from the main water line under pressure, the bladder in flutes and expanded is pushed out of the bladder through axial perforated pipe. On request welding on the body shall be according to the ASME standards. Concentrate from a pipe, and downstream after the Proportioner the premix has the right mixing rate. The bladder tank is equipped with vent valves, water and concentrate drain/fill valves, vessel support mounts, discharge pipe and a safety valve to protect it from overpressure.

• The center discharge piping, located within the bladder, insures that the foam concentrate flows to the upper discharge.

• During operation, water supplied from the system fills the area outside of the bladder, gradually displacing the foam concentrate inside the bladder causing the bladder to collapse until the supply is exhausted. The bladder discharges foam concentrate for the remotely mounted ratio controller at approximately the same pressure as the water supply. Since the bladder tank system is pressurized during operation, the bladder can be refilled with concentrate only when system is not in use.

Vertical Bladder Tanks

86Persian GPE

Foam Porportioner System

Specifications:• The 8 ,“6 ,“4 ,“3” and 10” ratio flow controllers

are “between the flanges” units designed to fitbetween two ANSI 150 lb pipe flanges.

• The inlet nozzle is secured by two stainlesssteel set screws. This allows the nozzle to beremoved from the controller for cleaning and/or repair.

• Metering orifices are sized appropriately foreach specified type and percentage foamconcentrate. A stainless steel retaining ringsecures the metering orifice in place.

• The controller body is clearly marked witha flow direction arrow and label to identifythe type of foam concentrate and injectionpercentage ratio.

Application:• The Persian GPE Proportioner is a device

designed to meter the correct amount offoam concentrate into the water stream overa wide range of flows and pressures withminimal pressure loss. These devices are usedin conjunction with either a bladder tank ora foam pump proportioning system. Typicalapplications include flammable liquid storagetanks, loading racks, aircraft hangars, andheliports or anywhere flammable liquids areused, stored, processed or transported.

• The operating principle of the controller isbased upon the use of a modified venturi. Aswater passes through the inlet nozzle, pressureis reduced in the annular area of the nozzle.This reduction allows the metering of foamconcentrate into the water stream through afoam concentrate-metering orifice.

• Model No. 6550• Sizes 3in″ through 10in″• Wide Range of Materials

87 Persian GPE

• Model No. 6700

Application:• The Persian GPE’s Handle Yoke Monitor comes

with both a left/right and an up/down lockhandle. To disengage lock(s), turn handle(s)counterclockwise. Move the tiller handle todirect the stream to the desired position. Turnlock handle(s) clockwise to engage lock.

Features and Benefits:• Persian GPE Rugged, corrosion resistant brass

construction; unique configuration flows up to1250 gpm;

• compact 3” or 4” 150# ANSI flange; verticalmovement 90 degrees above horizontal to 45degrees below; full, continuous 360 degreerotation; rugged, stainless steel lock hardware;grease fittings for easy lubrication; durableElectro Statics finish.

Foam Monitor