VG7241ST+3008BP Johnson Controls Valve / Actuator

Overview

The Johnson Controls VG7241ST+3008BP is a 2-way normally open pneumatic globe valve assembly designed for precision control in low-pressure steam and hot or chilled water applications. Featuring a 2-inch NPT connection, this unit is engineered to provide stable modulating control under varying system pressures. It combines a durable cast bronze valve body with an exposed pneumatic actuator that includes a factory-mounted valve positioner for precise stem positioning and repeatable performance.

Features

• Normally open spring return configuration ensuring fail-safe operation during signal loss.
• Equal percentage flow characteristics for enhanced control loop stability across varying demands.
• Factory-mounted valve positioner that eliminates hysteresis and guarantees accurate response to control signals.
• Rugged cast bronze body and brass trim offering excellent resistance to corrosion and wear.
• High serviceability with features allowing for in-place valve repacking.

Specifications

• Connection Type: 2-inch NPT
• Flow Coefficient: 46.2 Cv
• Actuator Type: Pneumatic with 3-6 PSI spring range
• Valve Pattern: 2-way
• Trim Material: Brass with cast bronze body and stainless steel stem
• Leakage Rating: ANSI Class IV (0.01% of maximum flow)
• Media Compatibility: Hot or chilled water, glycol solutions up to 50%, and low-pressure steam
• Maximum Pressure Drop: 30 psid for water, 15 psid for steam
• Max Pressure Rating: 400 psi for water (up to 150°F), 35 psi for steam (at 284°F)

Applications

• Commercial HVAC systems for precision terminal unit and coil zone control.
• Commercial boiler systems requiring high-reliability spring return fail-safe operation.
• Modulating flow control within hydronic heating and cooling systems.