Parker 529811000 4-way 3-position Valve 1/4 Inch Npt

Product Description

The PARKER 529811000 is a 4-way, 3-position mechanically operated directional control valve designed for pneumatic and hydraulic circuit control in industrial and commercial applications. It uses a lever-spring return actuator, meaning the valve shifts when the lever is manually engaged and returns to the center position automatically when released. The valve features 1/4 inch NPT inlet and outlet ports, a Cv rating of 0.83, and a maximum working pressure of 150 psi. With five ports and three positions, it is suited for controlling double-acting actuators or reversible fluid power circuits. Installation is performed by qualified fluid power or industrial maintenance technicians.

This valve is appropriate for use in industrial automation, fluid power systems, and machine control applications where manual directional control is required. It is rated for working pressures from 0 to 150 psi and operating temperatures from 32 degrees F to 175 degrees F, making it suitable for a range of indoor industrial environments. The 1/4 inch NPT port sizing fits common small-bore pneumatic and hydraulic plumbing. It ships as a single unit per package.

Key Features

• 4-way, 3-position EC configuration with five ports for directional circuit control
• Lever-spring return actuator for manual actuation with automatic center-position return
• 1/4 inch NPT inlet and outlet ports for standard pipe thread connections
• Cv rating of 0.83 for consistent flow performance in small-bore circuits
• Operating pressure range of 0 to 150 psi
• Temperature range of 32 degrees F to 175 degrees F for broad indoor use

Compatibility

Designed as an OEM-style replacement or direct-fit valve for industrial fluid power systems requiring a 4-way, 3-position mechanically operated directional control valve with 1/4 inch NPT porting and lever-spring return actuation.

Installation Notes

Installation should be performed by a qualified fluid power technician or industrial maintenance professional. De-pressurize the system and relieve all stored fluid energy before removing or installing the valve. Verify that inlet and outlet port thread type and sizing match existing plumbing before installation. Consult applicable industry codes and the system manufacturer's documentation for torque and sealing requirements.