Parker B521BB553C Stacking Solenoid Valve 4-way 120V

Product Description

The PARKER B521BB553C is a stacking solenoid valve designed for directional control of pneumatic or fluid flow in industrial and commercial automation systems. It operates as a 4-way, 2-position valve with double solenoid actuation and solenoid return, meaning both shifting directions are powered electrically rather than relying on a spring. The valve carries a Cv rating of 1.4 and operates at 120 volts AC. It accepts a 1/4-inch inlet and 1/4-inch outlet, and is rated for pressures up to 145 psi. Licensed trades and mechanical contractors install this type of valve in manifold-mounted directional control assemblies.

This valve is suited for use in pneumatic control circuits found in light industrial equipment, process automation, and fluid power systems. The stacking design allows multiple valves to be manifold-mounted side by side, reducing plumbing complexity and saving panel space. It is appropriate for both new installations and service replacements on existing stacking manifold assemblies. Operating temperature range runs from 5 degrees F to 120 degrees F, making it suitable for interior mechanical rooms and controlled environments. The NEMA 4 enclosure rating provides protection against wash-down and splashing water.

Key Features

• 4-way, 2-position directional control with double solenoid actuation
• Solenoid return eliminates spring-return dependency for positive bi-directional shifting
• 1.4 Cv flow rating through 1/4-inch inlet and outlet ports
• 120V AC coil voltage for standard industrial power circuits
• Rated to 145 psi maximum working pressure
• NEMA 4 enclosure rating for wet or wash-down environments
• Stacking body-ported design for manifold assembly

Compatibility

Designed as an OEM-style replacement or new-installation component for stacking pneumatic or fluid power manifold systems that accept 4-way body-ported solenoid valves with 1/4-inch porting.

Installation Notes

Installation should be performed by a qualified fluid power technician or licensed mechanical contractor. De-energize the control circuit and relieve all system pressure before removing or installing any valve. Verify that manifold port alignment and electrical coil voltage match the application requirements before energizing. Follow applicable NFPA and local mechanical codes for pneumatic control system service.