Parker F400S Hydraulic Control Valve 5 Gpm 5000 Psi 1/4 Npt

Product Description

The PARKER F400S is a hydraulic control valve designed to regulate flow in hydraulic circuits operating at pressures up to 5,000 psi. Built with a steel body and nitrile seals, it handles demanding industrial and mobile hydraulic applications where leak-free performance and durability are required. The valve accepts a 1/4-18 NPT connection and supports a maximum flow rate of 5 GPM. At 2.63 inches overall length, it fits in compact valve assemblies without sacrificing pressure capacity. A knob handle provides direct, tactile control for technicians adjusting flow on the bench or in the field.

This valve is suited for use in hydraulic power units, mobile equipment hydraulic circuits, and stationary industrial machinery where manual flow control is needed at moderate flow rates. It is typically installed by hydraulic system technicians, millwrights, or fluid power specialists in both OEM manufacturing and service-repair environments. The compact form factor makes it practical for panel-mount or inline installations where space is limited.

Key Features

• Maximum working pressure of 5,000 psi for high-pressure hydraulic circuits
• 5 GPM maximum flow rate suitable for low-to-medium flow hydraulic systems
• Steel body construction for durability in industrial and mobile applications
• Nitrile seals for compatibility with standard petroleum-based hydraulic fluids
• 1/4-18 NPT thread for straightforward inline plumbing
• Knob handle for manual, tool-free flow adjustment

Compatibility

Designed as an OEM-style replacement or new-installation hydraulic control valve for systems requiring a 1/4-18 NPT, 5 GPM, 5,000 psi-rated manual flow control valve.

Installation Notes

Installation should be performed by a qualified hydraulic technician. Depressurize and bleed the hydraulic system completely before removing or installing any valve. Apply thread sealant rated for hydraulic service to NPT threads and tighten to the fitting manufacturer specifications using appropriate wrenches — do not overtighten NPT connections. Verify seal integrity and check for leaks before returning the system to full operating pressure.