BMD Pressure Pilots

The PC88 is a rugged, economical pressure control pilot. It can be used anywhere pressure control of high pressure gas is required.

  • PC88 available as direct acting or reverse acting
  • Action is field reversible
  • NACE option available

FW Murphy is the exclusive BMD distributor for new equipment packages.  

  • Overview
  • Specifications
  • Diagrams
  • Literature

When using PC88 in conjunction with a control valve, it may serve as either a back pressure regulator or pressure reducing regulator. It can also be used to send a signal when the sense pressure goes above or falls below a given set point. The PC88 Direct functions by sensing a high-pressure signal and outputting a low-pressure signal when the high-pressure signal rises above the set point. The PC88 Reverse outputs a low-pressure signal when the high-pressure signal falls below the set point.

  • Connections (Sense Pressure, Supply & Output Pressures): 1/4” female NPT
  • Vent: 1/8” female NPT
  • Temperature Range: -20° F to 400° F (-28° C to 204° C)
  • Set Pressure Range: 75 to 1500 psi
  • Weight: 17 lbs
  • Materials:
    • Body, Base and Bonnet: WCB steel
    • Internals: Stainless steel
    • Main Spring: Carbon steel
    • Diaphragm: Nylon reinforced Buna, nylon reinforced Viton® (optional)
    • Seals: Buna, Viton® (optional)

PC88 Reverse Dimensions

PC88 Direct Dimensions

For more information about this product, you can download the related literature here:

Sales Bulletin (2015362; revision date – 09/2020)