VG7842RT+3008B Johnson Controls Valve / Actuator

Overview

The Johnson Controls VG7842RT+3008B is a high-performance 1-1/2 inch 3-way mixing globe valve assembly designed to regulate the flow of water and steam in commercial HVAC applications. It features a rugged cast bronze body paired with a pneumatic actuator, providing precise linear flow control and robust close-off capabilities to maintain optimal environmental conditions within a building automation system.

Features

• Three-way mixing configuration allows for versatile fluid blending strategies in heating and cooling systems.
• Robust cast bronze body construction ensures durability and long-term service life.
• Equipped with a pneumatic actuator featuring a 3 to 6 psi nominal spring range for reliable fail-safe operation.
• Stainless steel stem and durable trim design offer excellent corrosion protection.
• Serviceable engineering enables in-place valve repacking to minimize maintenance downtime.

Specifications

• Valve Size: 1-1/2 inches (1.5″ FNPT)
• Connection Type: Threaded NPT
• Flow Capacity: 28.9 Cv
• Flow Characteristic: Linear (three-way)
• Actuator Type: Exposed pneumatic actuator with positioner (V-3000 series)
• Spring Range: 3 to 6 psig
• Maximum Static Pressure: 400 psi
• Media Temperature Range: Water: 35° to 248°F (2° to 120°C); Steam: up to 338°F (170°C) maximum depending on exact configuration

Applications

• Ideal for regulating hot water, chilled water, and glycol solutions (up to 50% concentration) in commercial environmental control systems.
• Well-suited for low-pressure steam applications up to 35 psig.
• Designed for integration into hydronic heating and cooling systems, air handling units, and comprehensive building automation networks requiring reliable mixing control.