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The PARKER B511BB549C is a single-solenoid, 4-way, 2-position stacking solenoid valve designed for pneumatic directional control applications. It operates on 24 volts DC and delivers a Cv rating of 1.4, making it suitable for moderate-flow air circuits. The valve uses an air return mechanism to restore the spool to its default position when the solenoid is de-energized. Rated to a maximum working pressure of 145 psi and built to NEMA 4 standards, this valve handles demanding industrial and commercial pneumatic environments. Licensed HVAC, mechanical, and industrial technicians install this type of valve in automated pneumatic control panels, actuator circuits, and air-logic systems.
This valve is used in pneumatic systems requiring reliable directional control of airflow. Its body-ported, 4-way design makes it well suited for controlling double-acting actuators or for use in stacking valve manifold assemblies where space efficiency is a priority. The 1/4 inch inlet and 1/4 inch outlet port sizing fits common pneumatic tubing and fittings found in light industrial and commercial HVAC control systems. Operating temperature range spans 5 degrees F to 120 degrees F, covering most indoor mechanical room and panel environments.
Designed as an OEM-style replacement or new-installation component for stacking pneumatic valve manifold assemblies using 4-way, 2-position, single-solenoid air-return configurations with 1/4 inch porting and 24 volts DC control voltage.
Installation should be performed by a qualified technician familiar with pneumatic control systems. Depressurize the air supply and de-energize all electrical circuits before removing or installing any solenoid valve. Verify that supply voltage matches the 24 volts DC coil rating before energizing. Follow applicable local mechanical codes and manufacturer torque guidelines for port fittings to prevent leaks.
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