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Parker MHB-030-WJAH-52E - Standard Pilot Vented Load Control Valves

Parker’s vented load control valves are designed to operate independent of downstream pressure to prevent runaway loads under all dynamic conditions, handling pressures up to 350 bar (5000 psi) and flows up to 113 lpm (30 gpm).

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Brand Parker

Part No. MHB-030-WJAH-52E

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Products specifications

Attribute name	Attribute value
Maximum Operating Pressure	3000 psi	Seal Material	Nitrile
Division	Hydraulic Cartridge Systems Division	Division	Hydraulic Systems Division
Pilot Location	External	Maximum Kinematic Viscosity	45-2000 SSU (6 to 420 cSt)
Body Material	Aluminum	Minimum Operating Temperature	-34 °C
Cavity Size	n/a	Adjustment Mechanism	Tamper Resistant
Weight	1.13 kg	Function	Counterbalance Valve
Holding Pressure	3000 psi	Maximum Inlet Pressure Rating	210 bar
Maximum Operating Temperature	+121 °C	For Fluid Type	Mineral-based or synthetic hydraulic fluids
Valve Material	All parts steel. All operating parts hardened steel	Operating Temperature	-34 to +121 °C
Filter Efficiency Rating	ISO 4406 18/16/13, SAE Class 4	Flow Rate	30 Gal/min
Actuation Type	Pilot Operated, Vented	Installation Torque	N/A Nm
Mounting Type	Single Inline	Flow Direction	Cylinder port C, Valve port V, Pilot port P
Leak Rate	5 @ 80% of setting drops/min	Port Size	SAE-8
Pilot Pressure Ratio	10:1	Pressure Control Range	1500-3000 psi
Pressure Control Sensitivity	N/A psi	Maximum Flow Rate	112.5 L/min
Seal Material	Nitrile	Adjustment Mechanism	Tamper Resistant
Holding Pressure	3000 PSI, 210 BAR	Port Size	SAE-8
Mounting Type	Single Inline	Pilot Pressure Ratio	10:1
Maximum Flow Rate	30 GAL/MIN, 112.5 L/MIN	Pressure Control Range	105-210 B

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