Parker RDH101S50 Hydraulic Relief Valve 0.5 Gpm 5500 Psi

Product Description

The PARKER RDH101S50 is a cartridge-style hydraulic control relief valve designed to protect hydraulic circuits from overpressure conditions. Rated for a maximum working pressure of 5500 psi and a maximum flow rate of 0.50 GPM, this valve installs into a C10-2 cavity and uses a 7/8-14 UNF thread for secure, leak-free engagement. Constructed with a steel body, it is built for durability in demanding fluid power applications. The two-way flow regulation design provides straightforward pressure relief in compact hydraulic manifold or inline configurations. This valve is typically installed by fluid power technicians and hydraulic system mechanics working on mobile or industrial equipment.

The RDH101S50 is suited for residential and light industrial hydraulic systems where precise pressure relief is required at low flow rates. Its compact cartridge format makes it appropriate for manifold-mounted installations where space is limited. Applications include hydraulic power units, mobile equipment hydraulic circuits, and custom manifold assemblies requiring C10-2 cavity compatibility. The 0.50 GPM flow rating makes this valve appropriate for pilot or control circuits rather than high-volume main-line applications.

Key Features

• Maximum working pressure of 5500 psi for high-pressure circuit protection
• Low 0.50 GPM flow rate suited for pilot and control circuit applications
• 7/8-14 UNF thread for standard cartridge cavity installation
• C10-2 cavity size for compatibility with common manifold configurations
• Two-way flow regulation design for straightforward relief valve operation
• Steel body construction for durability in demanding hydraulic environments

Compatibility

Designed as an OEM-style cartridge replacement for hydraulic systems using C10-2 cavity manifolds with 7/8-14 UNF thread specifications.

Installation Notes

Installation should be performed by a qualified fluid power technician or hydraulic systems mechanic. Depressurize and de-energize the hydraulic system fully before removing or installing any cartridge valve. Use the appropriate cartridge installation tool and torque wrench to seat the valve in the C10-2 cavity without damaging the thread or sealing surfaces. Inspect cavity seals and O-rings before installation to ensure a leak-free assembly.