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PRC Industrial Supply offers a full range of services including:

  • In-house repairs of pumps, motors, valves and cylinders
  • Hose burst testing to 30,000 PSI
  • Custom power unit design and fabrication
  • Field-trouble shooting and hydraulic system design including incorporation of wireless radio remote controls into existing system

We also provide custom fabrication of hydraulic steel tubing, hydraulic hose and industrial hose assemblies using a wide variety of hose types and fittings configurations.

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RD-1400 Lock Valve

RD-1400 Lock Valve
Model Number Port Size Capacity Pressure
RD-1450 1/2 NPTF 30 GPM 3000 PSI
RD-1475 3/4 NPTF 30 GPM 3000 PSI


The PRINCE valve model RD-1400 is a double pilot-operated lock valve. This valve will lock a cylinder in place when a directional control valve is in the neutral position. In operation oil is directed to one of the valve ports and oil can free flow to the corresponding cylinder port. The pressure on this valve port will shift the pilot spool opening the opposite check valve. This will allow oil to return through the opposite check valve. This valve has a hardened steel seat and steel ball and therefore should not be used in applications requiring absolutely zero leakage. When using a pilot operated check to lower a heavy load the valve may chatter. An orifice in the line in some cases may be beneficial.

Valve Specifications

  • Capacity: 30 gpm max inlet flow
  • Pressure: 3000 psi max
  • Weight: 7 lbs.
  • Pilot Ratio: 4:1

See PDF for complete specifications

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