Honeywell Commercial VP526A1019 Pneumatic Water Valve

The Pneumatic Water Valve delivers precise water control for commercial HVAC systems. The Honeywell VP526A1019 is a 3-Way Mixing, high-pressure unit designed for reliability in air conditioners and fan coil units.

Crafted with a forged brass body and a stainless steel stem, this valve uses Buna-N seals for durable, leak-resistant operation. Its direct-acting diaphragm actuator provides smooth, proportional flow, with a normally open positioner that ensures responsive control across a wide operating range. Rated up to 250 psi and temperatures from 35 to 250°F, it maintains a linear and constant flow throughout plug travel, making it ideal for precision hydronics. The valve fits 5/8 inch nominal size lines with 45-degree SAE flare end connections and an overall height of just under 5 inches.

With a flow capacity of 2.5 Cv, this valve delivers linear, constant flow across the entire plug travel for stable temperatures and predictable coil performance in demanding environments.

• Configuration: 3-Way Mixing, high-pressure unitary valve for precise control
• Connections: 5/8 in nominal size with 45° SAE flare x 45° SAE flare
• Materials: Forged brass body, stainless steel stem, Buna-N seals
• Actuation & Positioning: Direct-acting diaphragm actuator with Proportional Normally Open positioning
• Performance: 250 psi max, 35–250°F, 2.5 Cv, linear and constant flow
• Applications: Suitable for air conditioners and fan coil units
• Inclusions: Includes 3–10 psi spring