Johnson Controls VG7243CT+423GGA 2-Way Globe Control Valve Assembly 1/2 in. NPT 0.73 Cv Normally Open Stainless Steel Trim Proportional

The Johnson Controls VG7243CT+423GGA is a VG7000 Series stainless steel trim globe valve factory-assembled with a VA-4233-GGA-2 spring-return electric actuator, engineered for precise proportional flow control in commercial HVAC systems. This 2-way, normally open valve assembly regulates hot water, chilled water, glycol solutions, and low-pressure steam in response to a building automation or control system.

The VG7243CT valve body features a 1/2 in. NPT threaded connection with a 0.73 Cv flow coefficient and an equal percentage flow characteristic, delivering highly accurate modulation across the full valve stroke. The stainless steel trim provides excellent durability and corrosion resistance, while the valve body is rated to ANSI Class 250 static pressure standards and meets ASME B16.15 requirements.

Key Features:

• 2-Way, Normally Open configuration — valve opens on loss of power or signal
• 1/2 in. NPT threaded end connections for straightforward installation
• 0.73 Cv flow coefficient with equal percentage flow characteristic
• Stainless steel trim — stem and seat for enhanced corrosion resistance
• Fluid temperature range: 35°F to 250°F (2°C to 121°C) for water/glycol; up to 15 psig saturated steam
• Maximum allowable static pressure: 400 psig (2,756 kPa) up to 150°F
• Close-off pressure: 230 psig
• Spring-loaded PTFE and elastomer V-ring packing for long service life and tight shutoff
• Rangeability greater than 25:1 per EN60534-2-4

VA-4233-GGA-2 Actuator Specifications:

• Proportional control — accepts 0–10 VDC, 2–10 VDC, 6–9 VDC, 0–20 mA, or 4–20 mA input signal (switch selectable)
• Supply voltage: 24 VAC/VDC, 50/60 Hz, 12 VA
• Minimum force output: 61 lb (271 N) for reliable tight shutoff
• Spring return stem-up — automatically returns valve to open (fail-safe) position on power loss
• Maximum stroke: 29/32 in. (23 mm) with a nominal full-stroke time of 76 seconds
• AUTO stroke calibration — automatically scales input signal across actual valve stroke, eliminating manual adjustment
• Switch-selectable direct or reverse action for flexible system integration
• Position feedback signal: 0–10 VDC, 2–10 VDC, or 6–9 VDC
• Manual hand crank for valve positioning independent of power supply
• Integral position indicator for visual valve stem status
• Brushless stepper motor with stall-detection circuitry and noise filtering
• Enclosure rating: IP42 / NEMA 2
• Direct-mount design — no linkage required; factory or field assembly

The VG7243CT+423GGA is an ideal valve assembly for Building Automation Systems (BAS), AHU coil control, fan coil units, and hydronic terminal unit applications requiring reliable proportional control with fail-safe operation.