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1/4 & 3/8 NPTF Adjustable "Quick Stop" Pilot Operated Check Valve for Faster Stops

Patents Pending

Basic Operation:

Locks any pneumatic device in position when a pressure drop or total loss of pressure occurs. Standard pilot-operated check valves will not close fast enough when back pressure is present in the pilot line. Increasing the spring pressure causes the valve to close before all the air exhausts, resulting in faster stops.

  • Adjustable Pilot Pressure
  • Faster Stops
  • .0000522 cc/min Leak Rate
  • Manual Release Option

Operating Data:

Max Pressure:
120 psi
Pilot Pressure:
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. 1/4 NPTF 3/8 NPTF
No Manual Release B4100AD B6100AD
Manual Release B410MAD B610MAD
Flush Manual Release B41FMAD B61FMAD

Product Specs: (Click to see a larger images)