VG7842GT+3008B Johnson Controls Valve / Actuator

Overview

The Johnson Controls VG7842GT+3008B is a high-performance 1/2-inch 3-way mixing globe valve assembly equipped with a V-3000 pneumatic actuator featuring an exposed yoke. Designed for precise flow control in commercial HVAC systems, this valve regulates hot water, chilled water, glycol solutions up to 50%, or saturated steam. It features a robust cast bronze body with brass trim and a linear flow characteristic for reliable environmental control.

Features

• Long-life replaceable ring packing providing maximum reliability and extended service life.
• Over one million cycles tested to ensure exceptional operational longevity.
• Rugged die-cast actuator enclosure protecting the assembly components.
• In-place valve repacking capability for simplified maintenance and serviceability.
• Exposed yoke pneumatic actuator design with an 8 sq. in. effective diaphragm area.

Specifications

• Valve Size: 1/2 inch
• Connection Type: Female NPT
• Body Pattern: 3-Way Mixing
• Flow Capacity: 4.6 Cv
• Actuator Type: Pneumatic
• Spring Range: 3 to 6 psig
• Material: Cast bronze body, stainless steel stem, brass trim/plug
• Pressure Rating: ANSI Class 250 (up to 400 psi for water)
• Max Fluid Temperature: 35°F to 248°F (2° to 120°C) for water, up to 35 psig for saturated steam

Applications

• Commercial HVAC systems for demand-based climate control.
• Hydronic heating and cooling systems regulating hot or chilled water flow.
• Industrial air-side monitoring and ventilation systems requiring proportional mixing.
• Low-pressure saturated steam applications up to 35 psig.