VG7842RT+3008E Johnson Controls Valve / Actuator

Overview

The Johnson Controls VG7842RT+3008E is a 1-1/2 inch NPT pneumatic valve and actuator assembly designed for precise mixing control in pneumatic HVAC and building automation systems. This robust three-way mixing valve features a bronze body construction with brass trim and is engineered to deliver reliable performance in regulating hot water, chilled water, glycol solutions, or steam flow within demanding commercial or industrial environments. Equipped with an exposed pneumatic actuator, the assembly provides dependable regulation with an integrated spring return mechanism.

Features

• Three-way mixing configuration allows for efficient fluid blending and flow diversion.
• Heavy-duty bronze body construction coupled with brass trim ensures durability and corrosion resistance.
• Fail-safe spring return design provides predictable positioning in the event of air supply loss.
• Rugged die-cast actuator enclosure offers enhanced protection in harsh mechanical settings.
• Serviceable design permits in-place valve repacking to optimize maintenance schedules and system longevity.

Specifications

• Valve Size: 1-1/2 inches
• Connection Type: NPT (Female Threaded)
• Flow Coefficient (Cv): 28.9 Cv
• Nominal Spring Range: 9 to 13 psig
• Fluid Pressure Ratings: Maximum 15 psi WSP (Steam), 125 psi WOG (Water, Oil, Gas); up to 35-38 psig saturated steam depending on configuration
• Medium Temperature Range: Water: 35° to 248°F (2° to 120°C); Steam: maximum 338°F (170°C)
• Body Pressure Class: ANSI Class 250

Applications

• Hydronic heating and cooling systems requiring precise mixing of water or glycol loops.
• Commercial HVAC and building automation systems to maintain precise indoor climate control.
• Industrial utility applications managing low-pressure saturated steam distribution.
• Demand-driven variable flow applications using hot or chilled water up to 50% glycol solutions.