Parker 520811000 4-way 2-position Valve Lever-spring

Product Description

The PARKER 520811000 is a 4-way, 2-position mechanically operated directional control valve designed for pneumatic systems requiring reliable manual actuation with automatic return. The valve uses a lever actuator with spring return, snapping back to its default position when the lever is released. It features a Cv rating of 0.830 and handles working pressures from 0 to 150 psi. Weighing 2 pounds, this valve is sized for compact installations where space and precise flow control are priorities. Licensed pneumatic technicians and industrial maintenance professionals are the primary installers of this type of valve.

This valve is suited for use in pneumatic directional control circuits in both light industrial and general automation applications. The 1/4 inch NPT inlet and outlet ports make it compatible with standard quarter-inch pneumatic lines found in machinery, automated equipment, and process control panels. Its 5-port, 2-position configuration is a common format for actuating double-acting cylinders or directing airflow between two discrete paths. The operating temperature range of 32 to 175 degrees F makes it appropriate for standard indoor industrial environments.

Key Features

• 4-way, 2-position directional control with 5-port configuration for double-acting actuator circuits
• Lever actuator with spring return for hands-free reset to default position upon lever release
• Cv rating of 0.830 for consistent, metered pneumatic flow
• 1/4 inch NPT threaded inlet and outlet ports for straightforward integration with standard pneumatic lines
• Operating pressure range of 0 to 150 psi
• Operating temperature range of 32 to 175 degrees F

Compatibility

Designed as an OEM-style replacement or direct-install mechanically operated directional control valve for standard 1/4 inch NPT pneumatic circuits in light industrial and automation systems.

Installation Notes

Installation should be performed by a qualified pneumatic systems technician or industrial maintenance professional. Depressurize the pneumatic circuit fully before removing or installing any valve component. Verify that line pressure does not exceed 150 psi and that ambient temperatures remain within the rated range. Use appropriate thread sealant on NPT connections and avoid overtightening, which can crack valve bodies.