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Liquid Controls valves are designed for a wide range of applications and flow rates. Careful engineering and construction ensure smooth, accurate, and controlled operation. E-7 valves are installed on the outlet side of the meter. Operation is smooth and easy regardless of the line pressure since the vector forces are directed at right angles to the valve opening mechanism and are never in opposition.

 

Designed with the same mounting dimensions as the Liquid Controls V-7 and K-7 mechanical valves, the E-7 electronic valve does not require plumbing changes to retrofit existing meter installations.

 

Class 2

A Class 2 E-7 valve is available for aviation applications, and features an anodized aluminum housing with stainless steel tubing, fittings, and solenoid valve parts. (Part #A298211A)

 

 

Flow Control Switch (Optional)

The Flow Control Switch is a bolt-on accessory for use with the Liquid Controls E-7 Valve. It is designed to control an air operated valve (AOV) that connects to the pump. During low-flow conditions, the Flow Control Switch is closed or OFF, and air to the AOV is not present. When high-flow conditions exist, the Flow Control Switch opens and activates the AOV. When the AOV activates, the pump switches from low-bypass mode to full-flow mode (high-bypass). When the delivery returns to low flow, the Flow Control Switch closes and vents the air to the atmospheric pressure releasing air from the AOV. The AOV closes and the pump returns to low-bypass mode. In many cases, the Flow Control Switch is routed to the engine throttle to increase and decrease the RPM of the pump shaft.