The Honeywell VP526A1118 is a 3-way unitary water valve designed for precise control of hot or cold water in HVAC systems.  It features a 1/2" outer diameter (3/8" nominal) flare connection and offers a flow coefficient of 1.6 Cv.  The valve operates with an 8 to 11 psi spring range and includes push-on air connections compatible with 1/4" outer diameter plastic tubing with proportional control design to ensure normally open flow between ports B and AB.

Constructed with a durable brass body, brass seats, and plug, the valve ensures longevity and reliable performance.  The valve incorporates a stainless steel stem and Buna-N V-ring packing, which is spring-loaded and self-adjusting to maintain optimal sealing and a linear flow characteristic provides consistent flow throughout the full travel of the plug, making it suitable for various control applications.

The compact size of the VP526A1118 allows for installation in spaces where room is limited.  The direct-acting, rolling diaphragm actuator comes with an integral high-temperature plastic air connector and is rated for a maximum safe air pressure of 30 psi (207 kPa) and a body pressure rating of 250 psi (1724 kPa).  It is compatible with controlled media temperatures ranging from 30 to 250°F, making it versatile for various HVAC applications.

Available replacement parts and accessories: