Customized SolutionsSafety & Reliability

Stainless steel 316 products

REDUNDANT CONTROL SYSTEM (RCS)

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Applications

• Emergency Shutdown Systems• Burner Management Systems• Isolation and Venting Systems• High Integrity Pressure Protection Systems (HIPPS)• Flaring Systems

The Redundant Control System (RCS) is the only pilot valve system that has no single point of failure that could result in an unwanted closure of the process valve.

RCS is fit for use in SIL 3 applications and greatly reduces spurious trip rates. RCS achieves a high level of process safety and reliability by using a redundant, fault tolerant architecture with high diagnostic coverage and automated testing. A keyed bypass allows easy on-line maintenance of the RCS without process interruption.

The RCS is available in a variety of constructions that provide diagnostics through automated, online testing.

Both solenoids are online during normal operation. Both solenoid valves must be de-energized for shutdown.

Pressure switches are used to individually alarm if either solenoid valve goes to the vent state when not commanded, thereby reducing the potential for spurious trips.

The pressure switches are also used for signaling during automatic, on-line testing.

2oo2 Diagnostics

Only one solenoid valve is on-line during normal operation. Any spurious trip of the on-line solenoid valve is detected by the logic solver, due to a signal being sent from an associated pressure switch.

The response to the trip is to energize the second solenoid valve thereby maintaining air supply to the process valve.

For functional testing, both solenoid valves are energized. Each solenoid valve is de-energized individually with pressure switch confirmation of successful venting. No bypass is required for functional testing.

1oo1 Hot Standby

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REDUNDANT VALVE SYSTEM (RVS)

Applications

• Emergency Shutdown Systems• Burner Management Systems• Isolation and Venting Systems• High Integrity Pressure Protection Systems (HIPPS)• Flaring Systems

The ASCO RVS offers Redundant Solution for Emergency Shut Down valves and various redundant configurations (1oo2, 2oo2 & 2oo3) to meet both Availability and Reliability.

The ASCO RVS is a 2oo3 Redundant Solenoid Valve Piloting System that combines the advantages of both 1oo2 & 2oo2 systems to acheive a high level of process Safety and Reliability.

Solenoid Valves model (327 & 307) certified for SIL3 (Exida and TUV) enables complete 2oo3 system to use in SIL3 applications.

2oo2 & 2oo3 RVS have individual isolated valves* for Hot Swapping that allow on-line replacement of solenoid valve while maintaining the system capability to bring the process to Safe mode in the event of an emergency.

1oo2 - Redundancy built to achieve a high level of process Safety & Availability.

• Hardware Fault Tolerant = 1• SIL3

2oo2 - Redundancy built to achieve high Reliability and prevent nuisance trips.

• Hardware Fault Tolerant = 0• SIL2• Options with: - Common Bypass - Individual Isolation

2oo3 - Redundancy built to achieve a high level of process Safety and Reliability.

• Hardware Fault Tolerant = 1• SIL3• Options with: - Common Bypass - Individual Isolation

* - 2oo3 with Hot swapping ensures that the system remains available to take the process to safety mode during maintenance mode

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BYPASS TEST PANEL

Applications

• Critical actuator control for Oil & Gas, Refinery and Petrochemical processes with online diagnostic testing to increase reliability

The Bypass Test Panel allows faulty solenoid valves to be replaced without interruption to the ongoing process line. Manual testing of solenoid valves’ functionality is also possible during the operation of the process valve.

For critical applications, feedback can be provided to the control room when the solenoid valves are in bypass mode using the Feedback Unit, which can be added in as an option. The Feedback Unit is ATEX certified II2 GD EEx d IIC T6, IP65.

Normal Mode

During regularoperation, thebypassvalve is in the“Normal”position,which the solenoid valve pilots the bypass valve.

Test Mode

Thebypassvalveisputinthe“Bypass”positiontotestthesolenoidvalve.The solenoid valve can then be safely tested to confirm the functionality of the solenoid valve. Its correct operation is confirmed by the pressure gauge.

Maintenance Mode

With the Bypass unit, the mal-function solenoid valve could be replaced withoutaffectingthemainvalve’soperation.

Bypass Modes

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ACTUATOR CONTROL SYSTEM (ACS)

The Actuator Control System (ACS) reduces the risk of malfunction and leakage, and provides a flexible full 316L stainless steel modular system with Filter Regulator, solenoids and accessories such as check valves, speed controllers and manual valves. The units are supplied completely assembled and tested using standard ATEX and Functional Safety certified products.

ASCO ACS is lighter, stronger and more compact comparatively to conventional panel mounting units. Integrated mounting facility eliminates incorrect installation with complex arrangements of panels, pipes, brackets, thus reducing leak points while increasing reliability and integrity of the control system.

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1. Filter/regulatorwith5µmor25µmfiltrationlevel2. Optional: pressure gauge3. Optional: Coupling system with 3 ports for pressure gauge, pressure relief valve or additional supply4. Explosion-proof solenoid with ATEX, IECEx and many other approvals5. Stainless steel base plate6. 3/2 direct acting poppet valve series 3277. Manual operator or Manual reset option

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1. Filter/regulatorwith5µmor25µmfiltrationlevel2. Optional: pressure gauge3. Stainless steel base plate4. Explosion-proof solenoid with ATEX, IECEx and many other approvals5. 3/2 direct acting poppet valve series 327

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Common combinations

1. Filter/regulatorwith5µmor25µmfiltrationlevel2. Optional: pressure gauge3. Stainless steel base plate4. Explosion-proof solenoid with ATEX, IECEx and many other approvals5. 5/2 spool valves series 551-553

Applications

• For process valve automation

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ASCO CUSTOMIZED SOLUTIONS

Applications in

•Water&Wastewater•Pulp&Paper•Oil&Gas•Petrochemical•Powerplant•Marine&Offshore•Food&Beverage

ASCO latest solution is tailored to meet customer’s requirements. We provide complete panel solution with valves builtintopanelsaccordingtocustomer’sneeds.

With a wide range of over 50,000 solenoid valves and extensive range of air preparation equipment complying to numerous international standards such as ATEX/IECEx, NEMA, TÜV, NEPSI, KGS, CE, UL and CSA; a suitable solution can be customised according to your application requirements.

Our control panel enclosures are available in EEx e, Stainless Steel 304, 316 and 316L materials with IP65 or IP66 ratings.

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ASCO STAINLESS STEEL PRODUCTS

ASCO solenoid valves are an integral part of the final control elements for any safety instrumented system or critical application. We have an array of over 50,000 solenoid valves ranging from solenoid pilot valves, angle body piston valves, NAMUR valves in 2/2, 3/2, 4/2 and 5/2 functions.

ASCOStainlessSteelProductsareavailablein2/2,3/2,4/2and5/2functionswithportsizesupto½”forbothdirectactingand pilot operated types.

Forinternal/externalpilotingStainlessSteel2-wayValves,ASCOhasarangeupto2½”.

Direct acting valves are pertinent on applications such as instrument panels, media sampling machines, process valve control.

Pilot operated valves are mostly recommended for use in medium size process actuator valves piloting in a harsh or corrosive environment.

ASCO Stainless Steel Valves are made to withstand the harsh environments and comply with ATEX/IECEx (EEx d, EEx em, EEx m, EEx n, NEMA (Class 1 and 2, Division 1 and 2), TÜV, NEPSI, KGS, CE, UL and CSA.

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ASCO Intrinsically Safe ValvesASCO Intrinsically Safe (IS) and Low Power valves are for use in instrument control equipment to prevent ignition in explosive atmospheres to ensure an inherent safe system is in place.

Low Power valves minimizes temperature rise with lower power drawn, this allows less wiring when operating these DC valves.

ASCO Manual Reset ValvesManual reset valves use manual reset assemblies together with the solenoid valves in order to prevent accidental or unplanned valve startup in their designed failure modes.

No voltage release valves can be latched by moving the lever tip to the latched position when the solenoid is energized. The valve trips when the solenoid is de-energised. When tripped, the valve can be manually cycled open / closed but the solenoid has to be energized to re-latch.

Electrically tripped valves can be latched when the lever is move to the latched position and the solenoid is de-energized. The valve trips when the solenoid is energized by a continuous or momentary (0.3 seconds minimum) electrical signal.

ASCO Next Generation ValvesASCO RedHat Next Generation Valves use electronics technology to manage power, providing a new standard of operation. The solenoid incorporates a power management circuit providing low power consumption, enhanced pressure and flow ratings and an electrical surge suppression to both the solenoid and electrical controls.

This new technology accepts both AC and DC voltages without sacrificing flow or pressure specification. This reduces wiring costs and provides safer working environments for applications operating on DC voltages.

ASCO RedHat Next Generation addresses many other operating characteristics that will further improve the life of the solenoid valves. This includes a much lower temperature rise andanincreaseinvalveambientratingto60°C.

ASCO SPECIAL APPLICATIONS

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Products and Systems showcase

Customised Solution

Filter Regulators

Stainless Steel Products

Intrinsically Safe Valves

Manual Reset Valves

Next Generation Valves

Actuator Control System

Bypass Test Panel

Redundant Valve System

Redudant Control System

Form

: A43

R2(0

2/16)

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Mail: APmarketing.asco@emerson.com

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