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Parker D3B125NMK2 - Single Pilot Operated, Pilot to Open Check Valves

Parker’s P.O. check valve assemblies allow flow up to 150 lpm (40 gpm) with pressures up to 420 bar (6,000 psi). Return flow can be enable by an external pilot supply, which shifts the internal poppet into an open position.

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Brand Parker

Part No. D3B125NMK2

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Products specifications

Attribute name	Attribute value
Cracking Pressure	2 bar	Filter Efficiency Rating	ISO 4406 18/16/13
Pilot Pressure Ratio	4:1	Division	Hydraulic Valve Systems Division
Pilot Location	3	For Fluid Type	Mineral-based Hydraulic Fluids
Maximum Inlet Pressure Rating	420 bar	Division	Mobile Hydraulic Systems Division Europe
Operating Temperature	-34 to 121 °C	Valve Material	Steel (all parts)
Seal Material	Nitrile	Weight	0.53 lb
Maximum Kinematic Viscosity	45-2000 SSU (6 to 420 cSt)	Minimum Operating Temperature	-34 °C
Actuation Type	Pilot Operated	Flow Rate	80 L/min @ 100 Psi (7 bar) Nominal
Maximum Operating Pressure	6000 psi	Function	Single Pilot to Open Check
Installation Torque	85 Nm	Maximum Flow Rate	40 Gal/min
Cavity Size	3C	Maximum Operating Temperature	250 °F
Body Material	n/a	Leak Rate	3 drops/min @ 6000 Psi (420 bar)
Flow Direction	2-1 Free Flow	Cracking Pressure	30 PSI, 2 BAR
Seal Material	Nitrile	Maximum Flow Rate	40 GAL/MIN, 150 L/MIN

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