Parker Hannifin RAH101K30 - Pilot Operated Relief Valves

Parker’s pilot operated relief valves provide a stable design with low pressure drop meant for continuous duty applications while operating with less hydraulic noise. These valves can work with pressures up to 420 bar (6000 psi) and flows up to 400 lpm (106 gpm) in a reliable and compact design. Parker’s pilot operated relief valves are ideal for limiting system pressure or in standard relief valve applications within mobile and industrial equipment such as agricultural, aerial, refuse, industrial power unit systems, mining equipment, and other heavy duty fluid power pressure control circuits.

Markets:
• Miscellaneous Industrial
• Miscellaneous Manufacturing
• Miscellaneous Mobile

Features/Benefits:
• High pressure and flow capacity
• Low leak ball and poppet designs
• Compact design
• Internal screens
• Hardened, precision ground parts for durability
• All external parts zinc plated

Applications:
• System pressure limiter
• Port/cross-port relief
• Swing relief
• Motor braking

Additional Technical Insight:
This family of valves is best suited for continuous duty systems where the valve is asked to operate beyond any intermittent use. They can be used to maintain system pressure for long periods of time. Additionally, where systems may have large rates of change in flow, the pilot operated valves can accommodate these changes without excessive pressure rise or sometimes called pressure override. Due to the flow opening areas through the valve, these spool type valves will operate more quietly than a conventional direct acting valve. One must also consider the leakage component as the spool is, by design, going to pass a small leakage flow, whereas a direct acting valve does not pass significant flow until the cracking pressure is reached. Spool type relief valves should not be used in load holding application.

Specifications

Rated Flow (gpm)	30
Rated Flow (lpm)	113
Maximum Inlet Pressure (psi)	5000
Maximum Inlet Pressure (bar)	345
Maximum Tank Pressure (psi)	5000
Maximum Tank Pressure (bar)	350
Maximum Pressure Setting (psi)	3000
Maximum Pressure Setting (bar)	207
Leak Rate (cc/min)	5 @ 100 psi (6.8 bar)
Cavity size	C10-2
Pressure Range Adjustment (psi)	200-3000
Pressure Range Adjustment (bar)	13.8-207
Adjustment Type	Knob Adjust
Standard Setting Pressure (psi)	1500
Standard Setting Pressure (bar)	103.5
Pressure Control Sensitivity (psi)	855 per turn
Pressure Control Sensitivity (bar)	59 per turn
Reseat Pressure (%)	90%
Seal Material	D-Ring (Standard)
Operating Temperature (F)	-50° to +270°
Operating Temperature (C)	-45° to +132°
Valve Materials	All parts steel. All operating parts hardened steel
Rated Fluid Viscosity (cSt)	Mineral-based or synthetic with lubricating properties at viscosities of 45-2000 SSU (6 to 420 cSt)
Filtration Ratings	ISO 4406:1999 Code 18/16/13
Weight (lb)	0.2
Weight (kg)	0.09
Installation Torque (lbs/ft)	51-55
Installation Torque (Nm)	69-75

PARKER HANNIFIN RAH101K30 Cross Reference

We have 2 alternatives for the RAH101K30 by PARKER HANNIFIN:

• FL3Z4602A
• PHRAH101K30