ASCO H137 solenoid valves are part of the ASCO Red Hat range of valves.
ASCO H137 solenoid valves are part of the ASCO Red Hat range of valves.
ASCO H137 solenoid valves are 2 way, normally closed, safety shutoff valves providing electro-hydraulic on-off control of combustion gas for boilers, industrial furnaces, dryers, dehydrators, large conversion burners and air heaters.
The self contained hydramotor actuator is a powerful, pull-type hydraulic ram providing output force of 1400 pounds to fully open the valve.
Upon current interruption, dual redundant relief valves dump hydraulic pressure which in turn will close the valve in one second.
The ASCO H137 solenoid valve hydramotor consists of of a motor/pump unit immersed in oil, reducing wear and provides highly reliable operation.
ASCO solenoid valves (2-way, 3-way and 4-way type including NAMUR interfaces) control the critical flow of air, gas, water, oil and steam across all industries – hazardous area solenoid valves are available for Division and Zone classifications.
Class I, Division 2 and Zone 1/Zone 2 approved solenoid valves according to ATEX, IECEx, FM, CSA and UL are available. Flameproof and explosion-proof valves can be specified for potentially explosive atmospheres where there is a presence of flammable liquids, gases or vapours.
ASCO valves improve reliability and performance of safety systems according to IEC 61508, IEC 61511 and Safety Integrity Levels (SIL) – ASCO spool valves with SIL 4 capability are SAEL listed as assessed by Exida and TÜV.
| Category | Process Instrumentation |
|---|
| Opening Time | Closing Time | Enclosure | Ambient Temperature | Body Class | Pipe Taps | |
| 27 Second Max | 1 second max | Type 4 Watertight standard | Type 7 Explosion proof optional | -40˚F to 150˚F (-40˚C to 66˚C) | Cast Iron, 2″ to 3″: 250# screw, 4″ – 6″: 125# flanges | 1/4″ upstream & downstream taps for routine leak testing |
| Operating Voltage | Amperes | ||
| Inrush | Opening | Holding | |
| 120V/60Hz | 27 | 2.7 | 0.18 |
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ASCO Solenoid Valves (SIL3 NACE ATEX NAMUR Valves)ASCO 551-553 explosion proof solenoid valves are single/dual NAMUR style solenoid valves, which are pilot operated, have an stainless steel body and are 1/4 and 1/2 tapped.
ASCO Solenoid Valves (SIL3 NACE ATEX NAMUR Valves)ASCO 302 series are direct operated and pad mounted explosion proof solenoid valves which are ATEX certified for installation in potentially explosive atmospheres located in hazardous areas.
ASCO Solenoid Valves (SIL3 NACE ATEX NAMUR Valves)ASCO 551-553 explosion proof solenoid valves are single/dual solenoid valves, which are pilot operated, have an stainless steel body and are 1/4 and 1/2 tapped.
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