VG7243GT+72CHGA Johnson Controls Valve / Actuator

Overview

The Johnson Controls VG7243GT+72CHGA is a factory-assembled valve and electric actuator assembly designed to regulate fluid flow in response to the demand of a controller in HVAC systems. This assembly features a 1/2-inch, 2-way normally open (push-down-to-close) cast bronze globe valve paired with a VA7820 series spring-return electric actuator.

Features

• Fail-safe spring return action that positions the stem up (normally open) upon loss of power.
• Field-selectable actuator configuration supporting proportional, three-wire floating, or on/off control signals.
• Stainless steel trim provides high reliability, corrosion resistance, and a long operational lifespan.
• Equal percentage flow characteristics for stable and precise modulation.
• Built-in self-adjusting packing ring packs that ensure tight shut-off and minimal maintenance.

Specifications

• Valve Size: 1/2 inch with female NPT end connections.
• Flow Coefficient: 4.6 Cv.
• Close-Off Pressure: 278 psi.
• Input Power: 24 VAC, 50/60 Hz.
• Control Signal: 0-10 VDC proportional (default), floating, or on/off with 0-10 VDC or 2k Ohm feedback.
• Fluid Temperature Limits: 35 to 338 degrees Fahrenheit (2 to 170 degrees Celsius).
• Saturated Steam Rating: Up to 100 psig.
• Valve Body Rating: Meets ASME B16.15 Class 250 requirements.
• Enclosure Rating: NEMA 2.

Applications

• Specifically designed for regulating the flow of hot water, chilled water, and up to 50% water-glycol solutions in commercial HVAC systems.
• Suitable for low to medium pressure saturated steam applications in variable or constant volume air handling units, terminal reheating coils, and baseboard radiation loops.