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Parker M04A4JZN - Unloading Relief Valves

Parker’s unloading pressure control valves automatically charge and maintain a specific pressure range within accumulators by loading and unloading pump flow. Usable with fixed or variable pumps and pressure of 420 bar (6000 psi) and flow up to 1 gpm.

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Brand Parker

Part No. M04A4JZN

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Products specifications

Attribute name	Attribute value
Maximum Operating Pressure	420 bar	Function	Unloading Relief Valve
Filter Efficiency Rating	ISO 4406 18/16/13, SAE Class 4	Adjustment Mechanism	Screw
Valve Material	All parts steel. All operating parts hardened steel	Standard Setting Pressure	125 bar
Flow Rate	0.53 Gal/min	Body Material	n/a
Actuation Type	Pressure Sensing	Division	Hydraulic Cartridge Systems Division
Installation Torque	50 Nm	For Fluid Type	Mineral-based or synthetic hydraulic fluids
Maximum Kinematic Viscosity	45-2000 SSU (6 to 420 cSt)	Seal Material	Nitrile
Minimum Operating Temperature	-30 °F	Weight	0.33 kg
Operating Temperature	-30 to +250 °F	Maximum Pressure Setting	2900 psi
Maximum Operating Temperature	+250 °F	Leak Rate	N/A drops/min
Cavity Size	C10-4	Maximum Flow Rate	2 L/min
Maximum Tank Pressure	6000 psi	Maximum Inlet Pressure Rating	420 bar
Pressure Control Range	725-2900 psi	Division	Mobile Hydraulic Systems Division Europe
Maximum Flow Rate	0.53 GAL/MIN, 2 L/MIN	Pressure Control Range	725-2900 PSI, 50-200 BAR
Adjustment Mechanism	Screw	Seal Material	Nitrile

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