Overview
The Johnson Controls VG1245AL+9A4GGA is a factory-assembled 1/2-inch 2-way ball valve and actuator assembly designed to provide precise flow regulation in commercial HVAC and building automation systems. This assembly features a durable forged brass body paired with stainless steel trim and is driven by a VA9104-GGA-2S non-spring-return electric actuator. It delivers smooth, proportional control (0-10 VDC) to accurately manage hot water, chilled water, or glycol solutions in demanding environmental control applications.
Features
- High-flow capacity with a 7.4 Cv rating and an equal percentage flow characteristic for precise modulation.
- Robust construction featuring a forged brass body, stainless steel ball and stem, and graphite-reinforced PTFE seats.
- Long service life with a minimum life expectancy of 200,000 leak-free cycles and an ANSI Class IV leakage rating.
- Direct-mount, non-spring-return electric actuator simplifies installation by eliminating complex linkages.
- Energy-efficient, quiet actuator operation that maintains the last commanded valve position during a power interruption.
- Includes a manual override handle for simple commissioning, system testing, or emergency operation.
Specifications
- Valve Size: 1/2 inch FNPT (Female NPT connection)
- Body Pattern: 2-way
- Flow Capacity: 7.4 Cv
- Close-off Pressure: 200 psid (1378 kPa)
- Pressure Rating: 580 psig (3996 kPa), PN40
- Trim Material: Stainless steel ball and stem
- Actuator Model: VA9104-GGA-2S (Non-spring return)
- Input Voltage: 24 VAC
- Control Signal: Proportional 0-10 VDC (2-10 VDC or 4-20 mA supported via 500-ohm resistor)
- Actuator Torque: 35 lb-in (4 Nm)
- Full Stroke Travel Time: 60 seconds
- Electrical Connection: 120-inch (10-foot) plenum-rated cable
- Enclosure Rating: NEMA 1 / NEMA 2
- Media Temperature Range: 23 degrees F to 250 degrees F (-5 degrees C to 121 degrees C)
Applications
- Commercial HVAC systems for precise liquid flow control in air handlers, fan coil units, and unit ventilators.
- Hydronic heating and cooling systems managing hot water, chilled water, or up to 50% water-glycol solutions.
- Low-pressure steam applications (up to 15 psi) utilizing the durable stainless steel trim.
- Seamless integration with Building Automation Systems (BAS) and Direct Digital Control (DDC) systems requiring accurate analog flow regulation.


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