Picture of 3/4 NPTF P.O. Check w/ Flush Manual Release

3/4 NPTF P.O. Check w/ Flush Manual Release

NGT’s B121FM is a standard pilot operated check valve that locks pneumatic devices in position. The B121FM has 3/4 NPTF in/out ports and 1/4 NPTF pilot port, standard temperature seals, and a flush manual release. The B121FM also can accommodate as low as 40 psi pilot pressure.
  • NGT’s PO checks can be used in any pneumatic application where a sudden drop in pressure would harm personnel, damage products, or otherwise hinder the manufacturing process
  • Typical applications of PO checks are clamping, work holding, & lifting equipment, doors, platforms, and material
  • Air tight design means little to no leaking. Design tightens with increased pressureAll aluminum o-ring grooves and faces are hard coat anodized with Teflon coating to reduce wear and increase seal life
  • Nickel plated steel piston rod for strength and corrosion resistance
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Product Drawing for 3/4 NPTF P.O. Check w/ Flush Manual Release
Product Figures for 3/4 NPTF P.O. Check w/ Flush Manual Release
Product Schematic for 3/4 NPTF P.O. Check w/ Flush Manual Release
Application & Function

NGT’s B121FM is a standard pilot operated check valve that locks pneumatic devices in position when a pressure drop or total loss of pressure occurs. The B121FM has 3/4 NPTF in/out ports and 1/4 NPTF pilot port, standard temperature seals, and a flush manual release. The B121FM also can accommodate as low as 40 psi pilot pressure. The B121FM valve locks air in the device (such as a cylinder or gripper) until the pilot signal is energized, at which time the valve opens and evacuates the device.

Technical Specs
Flow Capacity: 3.8
Max. Pressure: 150
Pilot Port: 1/4 NPTF
Port Size In: 3/4 NPTF
Port Size Out: 3/4 NPTF
Document: -B121XX.docx
Type: Single PO Check
Adjustable Pilot Pressure: False
Flow Control: False
Counterbalance: False
Is it Swivel: False
Material: Standard
TraceParts Model: 90-27042021-037904