Description
The Honeywell VGF21EP25 is a heavy-duty 2-1/2″ two-way flanged globe valve engineered for demanding hydronic and steam HVAC applications. With a stem-down-to-close configuration and a generous 70Cv flow coefficient, this valve delivers precise flow control across a wide range of system types — including steam, chilled water, and hot water systems with up to 50% glycol concentration.
Construction & Materials
- Cast iron valve body for exceptional strength and long service life
- Stainless steel stem for corrosion resistance and reliable actuation
- Stainless steel seat for durable, leak-tight shutoff
- Stainless steel disc for consistent seating performance
- 1-3/8″ bonnet for compatibility with a range of Honeywell actuators
Performance Specifications
- Valve size: 2-1/2″ (DN65)
- Configuration: Two-way, normally open or normally closed (stem down to close)
- Flow coefficient: Cv = 70
- Stem travel: 3/4″
- Compatible media: Steam, chilled water, hot water, and water/glycol mixtures up to 50% glycol
- End connections: Flanged
Key Features & Benefits
- Stem-down-to-close design provides fail-safe operation in the event of actuator power loss
- High Cv rating of 70 supports high-flow commercial and industrial HVAC systems
- Glycol compatibility (up to 50%) makes it ideal for freeze-protection applications
- Flanged connections simplify installation and maintenance in large piping systems
- Designed to pair with Honeywell electric or pneumatic actuators for automated control
Typical Applications
- Commercial HVAC air handling units (AHUs)
- Fan coil units and terminal unit control
- Steam heating systems
- Chilled water cooling coil control
- Hot water heating coil control
- Hydronic systems with glycol antifreeze solutions
