Overview
The Johnson Controls VG12A5HT is a 3-inch, 2-way flanged ball valve designed to regulate the flow of hot water, chilled water, and 50/50 glycol solutions in Heating, Ventilating, and Air Conditioning (HVAC) systems. This ASME Class 150 flanged valve features a durable forged brass body and high-quality 300 series stainless steel trim, engineered for accurate control under various load conditions. It comes without an actuator, allowing for the field mounting of compatible spring return or non-spring return electric actuators.
Features
- Durable forged brass body with a 300 series stainless steel ball and stem assembly.
- Amodel flow characterizing disk provides equal percentage flow characteristics for optimal temperature control.
- 100 psi closeoff pressure rating ensures tight shutoff.
- 500:1 rangeability delivers exceptional control precision under all load conditions.
- Maintenance-free design tested for leak-free operation exceeding 200,000 full-stroke cycles in iron-oxide contaminated water.
- EPDM double O-ring stem seal and graphite-reinforced PTFE seats provide enhanced wear and temperature resistance.
Specifications
- Valve Size: 3 inches (DN80)
- Configuration: 2-Way
- Flow Coefficient (Cv): 74
- Connection Type: ASME Class 150 Flange (Large face-to-face)
- Closeoff Pressure: 100 psi
- Maximum Operating Fluid Temperature: 0 to 284°F (-18 to 140°C)
- Maximum Saturated Steam Pressure: 25 psi
- Static Pressure Rating: 250 psi at 0 to 100°F fluid temperature (decreasing to 215 psi at 284°F)
- Trim Material: Stainless Steel Ball and Stem
- Body Material: Forged Brass
Applications
- Designed primarily for environmental monitoring and precise flow regulation within commercial and industrial HVAC systems.
- Regulating the flow of chilled water, hot water, and up to 50/50 glycol solutions.
- Suitable for systems requiring high-temperature water control or low-pressure saturated steam up to 25 psi.


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