Parker 520931000 4-way 2-position Valve Treadle 1/4 Inch Npt

Product Description

The PARKER 520931000 is a mechanically operated 4-way, 2-position directional control valve designed for pneumatic circuit control in industrial and manufacturing applications. It features a treadle actuator with manual return, allowing an operator to shift airflow direction with foot pressure and return the valve to its original position manually. The valve has 1/4 inch NPT inlet and outlet ports, a Cv rating of 0.83, and is rated for working pressures from 0 to 150 psi. With 5 ports and 2 positions, it directs compressed air to drive actuators, cylinders, or other pneumatic components. Licensed pneumatic system technicians and industrial maintenance mechanics are the typical installers.

This valve is suited for stationary industrial machinery, assembly line equipment, and pneumatic workstations where foot-operated control is needed to free both hands during operation. Typical installations include pneumatic presses, clamps, and conveyor control circuits. The treadle actuator makes it practical for applications requiring repeated, hands-free valve actuation. It operates within a working temperature range of 32 to 175 degrees F, making it compatible with standard indoor industrial environments.

Key Features

• 4-way, 2-position valve configuration with 5 ports for directional pneumatic circuit control
• Treadle actuator allows foot-operated shifting with manual return for repeatable hands-free use
• 1/4 inch NPT inlet and outlet ports for standard compressed air line connections
• Cv rating of 0.83 for measured flow capacity in pneumatic circuit sizing
• Rated for 0 to 150 psi working pressure across the full operating range
• Operating temperature range of 32 to 175 degrees F for standard indoor industrial environments

Compatibility

Designed as an OEM-style replacement or new-installation directional control valve for pneumatic systems using 1/4 inch NPT connections and requiring 4-way, 2-position foot-operated valve control.

Installation Notes

Installation should be performed by a qualified pneumatic systems technician or industrial maintenance mechanic. Depressurize the pneumatic circuit fully before removing or installing any valve. Ensure all NPT threaded connections are properly sealed with thread sealant rated for pneumatic service. Verify that the supply pressure does not exceed the 150 psi maximum rating before returning the system to service.