Picture of 1/4 NPTF Adjustable P.O. Check w/ Flush Manual Release and High Temp Seals

1/4 NPTF Adjustable P.O. Check w/ Flush Manual Release and High Temp Seals

NGT’s B4MFMADV is an adjustable PO check valve that enables quicker stops if the valve is closing too slowly or drifting after changing direction on the control valve. The B4MFMADV has 1/4 NPTF in/out ports and 1/8 NPTF pilot port, high temperature seals, and a flush manual release.
  • Adjustable PO checks allow for quicker stops if a standard PO check valve is closing too slow or drifting after changing direction on the control valve
  • Valve is adjustable to accommodate different pilot (signal)pressures
  • Helpful if a standard PO check doesn’t close fast enough due to signal strength or length of pilot line
  • Adjustable PO checks allow for quicker stops if a standard PO check valve is closing too slow or drifting after changing direction on the control valve
  • This valve enables faster stops with lower pilot pressure
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Product Drawing for 1/4 NPTF Adjustable P.O. Check w/ Flush Manual Release and High Temp Seals
Product Figures for 1/4 NPTF Adjustable P.O. Check w/ Flush Manual Release and High Temp Seals
Product Schematic for 1/4 NPTF Adjustable P.O. Check w/ Flush Manual Release and High Temp Seals
Application & Function

NGT’s B4MFMADV is an adjustable PO check valve that enables quicker stops if the valve is closing too slowly or drifting after changing direction on the control valve. Tightening the adjusting screw increases spring tension holding the valve closed, making the valve more responsive. The B4MFMADV has 1/4 NPTF in/out ports and 1/8 NPTF pilot port, high temperature seals, and a flush manual release. Installing a B4MFMADV will reduce the time it takes for a PO check valve to close with a weaker pilot signal.

Technical Specs
Flow Capacity: 2.6
Max. Pressure: 120
Pilot Port: 1/8 NPTF
Port Size In: 1/4 NPTF
Port Size Out: 1/4 NPTF
Document: -B4MXXAD.docx
Type: Adjustable
Adjustable Pilot Pressure: True
Flow Control: False
Counterbalance: False
Is it Swivel: False
Material: Standard
TraceParts Model: 90-27042021-037920