VG12A5HT+92NGGA Johnson Controls Valve / Actuator

Overview

The Johnson Controls VG12A5HT+92NGGA is a high-performance 3-inch, 2-way flanged ball valve assembly factory-fitted with an M9220-GGA-3 spring-return electric actuator. It is engineered to precisely regulate the flow of hot water, chilled water, and 50/50 glycol solutions in commercial heating, ventilating, and air conditioning (HVAC) systems. When power is lost, the spring-return mechanism automatically drives the valve to a normally open position.

Features

• 300 Series Stainless Steel Ball and Stem: Provides high durability and corrosion protection, accommodating high fluid temperatures.
• M9220-GGA-3 Actuator: Delivers robust spring-return operation to ensure the valve opens fully upon power interruption.
• Amodel Flow Characterizing Disk: Delivers an equal percentage flow characteristic for stable and accurate temperature control.
• High Rangeability: Offers a 500:1 rangeability for precision tracking of varying load demands.
• PTFE Thermal Spacer: Provides critical thermal isolation between the actuator body and the valve housing to extend component life.
• Double O-Ring Stem Seal: Utilizes EPDM double O-rings for tested, leak-free operation up to 200,000 cycles.
• Without End Switches: Designed as a direct control unit without integrated auxiliary position switches.

Specifications

• Valve Size: 3 inches (DN80)
• Valve Configuration: 2-Way
• Flow Capacity: 74 Cv
• Connection Type: ASME Class 150 Flanged
• Actuator Type: Spring Return Open (Normally Open)
• Control Input: 0-10 VDC Proportional (Modulating)
• Supply Voltage: 24 VAC/VDC
• Closeoff Pressure: 100 psi
• Fluid Temperature Range: -22 to 284°F (-30 to 140°C)

Applications

• Commercial HVAC Systems: Ideal for modulating control of air handlers, chillers, and boilers.
• Hydronic Heating and Cooling: Designed for managing hot water, chilled water, and glycol loops.
• Variable Load Environments: Well-suited for automation loops requiring exact temperature regulation under high or low load conditions.