Description
Overview
The Honeywell VP527A1075 is a 1/2″ O.D. (3/8″ nominal) two-way, straight-through pneumatic water valve engineered for proportional control in commercial HVAC hydronic systems. Designed for use with both hot and cold water applications, this normally open valve delivers reliable, precise flow modulation driven by a pneumatic actuator signal.
Key Features
- 1/2″ O.D. / 3/8″ nominal pipe size for easy integration into standard hydronic piping
- Two-way, straight-through body configuration for simplified installation and flow management
- Flow coefficient (Cv) of 1.6 for accurate proportional flow control
- 2–5 PSI spring range for responsive pneumatic actuation
- Proportional valve action provides smooth, modulating control
- Normally open (N.O.) valve action — opens on loss of air signal for fail-safe operation
- Push-on air connections compatible with 1/4″ O.D. plastic tubing for quick, tool-free pneumatic hookup
- Rated for use with hot or cold water service
- Maximum working pressure: 30 PSI
Applications
- Commercial HVAC hydronic heating and cooling coil control
- Fan coil unit water flow regulation
- Pneumatically controlled building automation systems
- Hot water and chilled water distribution systems
Specifications
- SKU: VP527A1075
- Brand: Honeywell
- Pipe Size: 1/2″ O.D. / 3/8″ Nominal
- Valve Configuration: Two-Way, Straight-Through
- Flow Coefficient (Cv): 1.6
- Spring Range: 2–5 PSI
- Control Type: Proportional
- Valve Action: Normally Open (N.O.)
- Air Connection: Push-On for 1/4″ O.D. Plastic Tubing
- Media: Hot or Cold Water
- Maximum Working Pressure: 30 PSI









