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1/2 & 3/4 NPTF Pneumatic Counterbalance Valves

Patents Pending

Basic Operation:

The counterbalance valve will hold a load in position until pressure or an external force is applied to move the load. Turning the adjusting screw clockwise will increase the load carrying capacity of the valve. Optional manual and flush manual release.

  • Optional Manual Release
  • .0000522 cc/min Leak Rate
  • Adjustable Load Setting

Operating Data:

Max Pressure:
120 psi
Leak Rate:
.0000522 cubic cc/min
Temp. Range:
30 - 150 F
Cycle Rate:
1 cyc./sec.
Flow Capacity (Cv):
Cracking Pressure:
1-2 psi
Properly filtered dry air or lubricated air.

Model No. 1/2 NPTF 3/4 NPTF
No Manual Release B81C00 B121C00
Manual Release B81C0M B121C0M
Flush Manual Release B81CFM B121CFM

Product Specs: (Click to see a larger images)