ASCO H137CN32F1F26V16-AC120

Combustion 2-Way Proof of Closure Gas Shutoff Valve Hydramotor Actuator, 4” Flange, 510 Cv (120V)

The H137 is a 2-way, normally closed, safety shutoff valve providing trouble free, electrohydraulic on-off control of combustion gas for boilers, industrial furnaces, dryers, dehydrators, large conversion burners, air heaters and similar applications.

The self-contained Hydramotor actuator is a powerful, pull-type hydraulic ram providing output force of 1,400 pounds to fully open the valve. Upon current interruption, dual redundant relief valves dump hydraulic pressure, closing the valve in one second. The Hydramotor consists of a motor/pump unit immersed in oil, reducing wear and provides highly reliable operation.

The H137 is a cast iron-bodied valve with Nitrile seat and aluminum trim. Pulling force from the Hydramotor actuator moves a lever (providing mechanical advantage) against spring and gas pressure to open the soft-seated flap, allowing straight-through gas flow.

A simple, two-wire circuit controls the motorized valve. Each H137 is equipped with one standard SPDT switch which actuates at the fully-open (energized) position. Each is equipped with a valve seal overtravel interlock switch which can be wired into the startup or pre-ignition interlock circuit to permit supervision of the valve’s closed position (FM proof of closure).

Fluid: Fuel Gas - Use with natural, mixed, manufactured, or LP gas. Also suitable for the following service: Scrubbed and dried coke, sewer and digester gases.

Specifications:

• Opening Time: 27 second max.
• Closing Time: 1 second max.
• Enclosure: Type 4 Watertight standard
• Type 7 Explosion proof optional
• Ambient Temperature: -40F to 150F (-40C to 66C)
• Body Class: Cast Iron, 2” to 3”: 250# screw, 4” - 6”: 125# flanges
• Pipe Taps: ¼” upstream \& downstream taps for routine leak testing

Installation: Multi-poise, may be mounted in any position.

Approvals:

• UL listed
• FM Approved
• CSA Certified to:
• Automatic Gas Safety Shutoff Valves C/I (3.9), File 113070.

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