Important Updates to Our Catalog Click Here

Discover Our Speciality Valves

Start Your Product Search

1/8, 1/4, 3/8 NPTF & G1/4, G3/8 BSPP Balanced Pilot Operated Check Valves

Patents Pending

Basic Operation:

Lock your pneumatic device in position when a pressure drop or total loss of pressure occurs. Manual release for exhausting trapped air before maintaining the system (OSHA Requirement).

  • Immediate Checking
  • Optional Manual Release
  • .000052 cc/min Leak Rate
  • 316 Stainless Available
  • Low & High Temp
  • G1/4 & G3/8 BSPP In Stock
  • Non-Ferrous In Stock

Operating Data:

Max Pressure:
150 psi
Min. Pilot Pressure:
40 psi
25 psi (see table `–K18’)
Leak Rate:
.0000522 cc/min
Temp. Range:
30 - 150 F
30-350 F (see table ‘-V’)
-40 -150 F (see table ‘-T40’)
Cycle Rate:
1 cyc./sec. max.
Flow Capacity (Cv):
1.7 (1/8 model)
2.6 (1/4 and 3/8 models)
Cracking Pressure:
1-2 psi
Properly filtered dry air or lubricated air.

Model No. No Manual Release Manual Release Flush Manual Release
1/8 NPTF B2M00 B2M0M B2MFM
1/4 NPTF B4M00 B4M0M B4MFM
3/8 NPTF B6M00 B6M0M B6MFM
1/4 BSPP BG4M00-1 BG4M0M-1 BG4MFM-1
For high temp seals add (-V) to the model # (ex. B2M0M-V).
For low temp seals add (-T40) to the model # (ex. B2M0M-T40).
For a lower pilot pressure add (-K18) to the model # (ex. B2M0M-K18).
For the non-ferrous model add (–NF) to the model # (ex. B2M0M-NF).

Product Specs: (Click to see a larger images)