The Model 1330 is a two-way, normally closed pilot, that senses pressure under its diaphragm and balances it against an adjustable spring load. An increase in pressure above the spring set point, tends to make the pilot open.
The Model 1330 is the standard pilot for OCV Series 108 Pressure Relief/ Sustaining Valves as well as the Model 108FC Fire Pump Relief Valve. Sensing upstream pressure and opening at the set point, modulates the main valve to maintain the required pressure.
There are other applications for the Model 1330 as a normally closed, pressure to open control.
Model 1330 Pressure Relief Pilot:
Elastomers (diaphragm, seat disc, o-rings)
Rubber components are typically the only parts that may require periodic replacement. These are available in kits consisting of the diaphragm, the seat disc and all O-rings.
Buna-N Kit – Part # 930000
Viton® Kit – Part # 930100
EPDM Kit – Part # 930400
The Model 1330 is shown on OCV Valve Schematics as:
|EXAMPLE: Shown here on a MODEL 108-2 Pressure Relief / Sustaining Valve.|