ISF Hazardous Location Valve Series

The ISF series control valve is an electronic pressure regulator designed to precisely and proportionally control the pressure of gases based on an electronic signal.

The ISF is an FM approved and rated Nonincendive valve designed for hazardous locations (see below for complete classification).

The FM Approved nonincendive ISF operates using two normally closed solenoid valves, a pressure sensor and a control circuit. 

One valve is actuated to allow unregulated supply media into the system. The second valve actuates to allow working media to vent to atmosphere. The pressure sensor provides feedback to the control circuit.

The control circuit compares the pressure sensor feedback to the user supplied electronic command signal and actuates the appropriate valve until the two signals match. 

The ISF nonincendive valve is potted on the inside. This allows for the direct control of hazardous media such as methane and natural gas.