Parker C400S Hydraulic Control Valve 5 Gpm 5000 Psi 1/4 Npt

Product Description

The PARKER C400S is a one-way hydraulic flow control valve designed to regulate fluid flow in hydraulic circuits. Built with a steel body and nitrile seals, it handles up to 5,000 psi working pressure and 5 GPM flow rate, making it a reliable choice for demanding industrial and mobile hydraulic systems. The 1/4-18 NPT threaded inlet and compact 2.63-inch overall length allow installation in tight hydraulic plumbing layouts. Hydraulic technicians and fluid power specialists typically specify this valve where controlled, unidirectional flow regulation is required in a high-pressure circuit.

The C400S fits residential and light commercial hydraulic applications as well as mobile equipment hydraulic systems where one-way flow control is needed. The 1/4-inch NPT port size suits smaller-bore hydraulic lines common in compact power units, presses, lifts, and auxiliary hydraulic circuits. Its steel construction handles the cyclic pressure loads typical of these environments. Installers working with manifold-mounted or inline plumbing configurations will find the thread standard and body size appropriate for standard 1/4-inch NPT fittings and adapters.

Key Features

• One-way flow regulation controls flow in a single direction within the hydraulic circuit
• 5,000 psi maximum working pressure suits high-pressure hydraulic systems
• 5 GPM maximum flow rate appropriate for small to medium hydraulic circuits
• Steel body construction provides strength and durability under cyclic pressure loads
• Nitrile seals offer compatibility with standard petroleum-based hydraulic fluids
• Compact 2.63-inch overall length eases installation in space-limited plumbing runs

Compatibility

Designed as an OEM-style replacement or direct-fit component for hydraulic systems using 1/4-18 NPT ported flow control valves rated to 5,000 psi.

Installation Notes

Installation should be performed by a qualified hydraulic technician or fluid power specialist. Depressurize and bleed the hydraulic system fully before removing or installing any valve. Apply thread sealant appropriate for hydraulic service to NPT threads and torque to the fitting manufacturer recommendations for the pipe size. Verify flow direction markings on the valve body are oriented correctly within the circuit before returning the system to service.