VG7841CT Johnson Controls Valve

Overview

The Johnson Controls VG7841CT is a 3-way mixing globe valve engineered for precise hydronic flow control in commercial HVAC and building automation systems. Sized at 1/2 inch with NPT threaded connections, it features a durable cast bronze body and brass trim to ensure a long service life and high corrosion resistance. The valve provides smooth, repeatable modulation for blending or diverting hydronic media, making it ideal for maintaining accurate environmental conditions.

Features

• 3-Way Mixing Configuration: Designed for efficient blending or diverting of hydronic media (A+B to AB).
• Robust Construction: Built with a premium cast bronze body and durable brass trim components.
• Equal Percentage Flow: Delivers stable, accurate modulation across the full stroke range.
• Standard Threaded Stem: Ensures compatibility with a wide selection of Johnson Controls electric and pneumatic actuators, such as the VA and VT series.
• Ease of Installation: Features 1/2-inch NPT (National Pipe Thread) end connections for straightforward integration into piping systems.

Specifications

• Pipe Size: 1/2 inch (0.5 inches)
• Connection Type: Threaded NPT
• Flow Coefficient (Cv): 0.73 Cv
• Valve Style: Globe / Control Valve
• Body Pattern: Three-Way Mixing
• Body Material: Cast Bronze
• Trim Material: Brass
• Maximum Static Pressure: 400 psi (ANSI Class 250)
• Medium Temperature Range: 35°F to 248°F
• Controlled Media: Hot water, chilled water, glycol solutions (up to 50%), and steam

Applications

• Hydronic heating and cooling coil control loops.
• Fan coil units (FCUs) and air handling units (AHUs).
• Heat exchangers and low-flow terminal unit systems.
• Commercial HVAC modulating control loops.
• Building automation and Direct Digital Control (DDC) systems.