VG7842GS+3801B Johnson Controls Valve / Actuator

Overview

The Johnson Controls VG7842GS+3801B is a 1/2-inch 3-way mixing globe valve assembly equipped with a compact pneumatic actuator. Engineered for precise fluid modulation in commercial HVAC and building automation systems, this assembly provides exceptional control for hot water, chilled water, 50/50 glycol solutions, and low-pressure steam applications.

Features

• Three-way mixing configuration for versatile hydronic system integration.
• Durable cast bronze body and brass trim components for high resistance to corrosion and wear.
• Compact pneumatic actuator design ideal for tight mechanical spaces.
• Linear flow characteristic ensuring stable and proportional temperature regulation.
• Slotted stem design to facilitate easy actuator coupling and field adjustments.

Specifications

• Pipe Size: 1/2 inch NPT
• Flow Coefficient: 4.6 Cv
• Valve Type: 3-Way Globe Mixing Valve
• Actuator Type: V-3801 Compact Pneumatic Actuator
• Spring Range: 3 to 6 psig
• Fluid Temperature Range: 35 to 248 degrees Fahrenheit
• Maximum Static Pressure: 400 psig (ANSI Class 250)
• Maximum Steam Pressure: 15 psig saturated steam

Applications

• Used in commercial HVAC and building automation systems for precise hydronic flow control.
• Designed for regulating temperatures in fan coil units, air handling units, heat exchangers, and hydronic terminal equipment.
• Suitable for blending return and supply water streams to achieve precise temperature control.