Accessories & Parts

2400 Pressure Relief Pilot / N.C. (High Pressure Type)

The Model 2400 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 2400 is the standard pilot for OCV Series 108HP Pressure Relief/ Sustaining Valves. Sensing upstream pressure and opening at the set point, it modulates the main valve to maintain the required pressure.

There are other applications for the Model 2400 as a normally closed, pressure to open control.

  • Normally Closed, increasing pressure opens
  • Simple adjustment
  • Can be local or remote sensed
  • 200 – 750 psig spring range
  • All parts replaceable while mounted on valve
  • Stainless steel construction
  • Rubber to metal seat for positive shut-off


Model 2400 Pressure Relief Pilot:
  1. Adjusting Screw Cover
  2. Adjusting Screw
  3. Spring
  4. Diaphragm
  5. Pressure Sense
  6. Pilot Outlet
  7. Pilot Inlet




Stainless Steel ASTM A743/CF8-M
Elastomers (diaphragm, seat disc, o-rings)

  • Buna-N (Std.)
  • Viton® (Opt.) Viton is a registered trademark of DuPont Dow Elastomers
  • EPDM (Opt.)


200 – 750 psig / 1380 – 5170 kPa



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 # 930016
Viton® Kit  –  Consult Factory
EPDM Kit  –  Consult Factory


The Model 2400 is shown on OCV Valve Schematics as: 2400symbol

EXAMPLE: Shown here on a MODEL 108-2HP Pressure Relief/Sustaining Valve.