Johnson Controls VG7241ST+7150G Valve Assembly

The Johnson Controls VG7241ST+7150G is a heavy-duty 2-inch globe valve assembly engineered for precise flow regulation in demanding HVACR applications. This 2-way normally open valve features a cast bronze body with durable brass trim, providing an equal percentage flow characteristic for stable control of hot water, chilled water, or 15 psi saturated steam. Rated for ANSI Class 250 static pressure, the assembly is built to withstand high-performance commercial piping environments.

Actuation is provided by the VA-7150G non-spring return electric actuator, which utilizes a three-wire incremental (floating) control signal at 24Vac. The synchronous motor and magnetic clutch design ensure a consistent 90 lb force for a tight close-off of 21 psi, effectively protecting the gear train and compensating for seat wear over time. With a high 46.2 Cv flow coefficient and standard NPT threaded connections, this assembly is a reliable solution for technicians requiring accurate modulation and long-term serviceability in field-integrated systems.

• Magnetic Clutch Technology: Provides constant output force to ensure tight valve shutoff while protecting the actuator motor from stall-related damage.
• High Flow Capacity: Features a 46.2 Cv rating, making it ideal for high-volume 2-inch NPT branch lines and air handling unit coils.
• Durable Construction: The cast bronze body and brass internals are designed to handle media temperatures ranging from 35°F to 284°F.
• Simplified Installation: The direct-coupled VA-7150 series actuator requires no complex linkages, reducing setup time for field contractors.

• What is the fail-safe position of this assembly? This model uses a non-spring return actuator, meaning the valve stem will maintain its last position upon loss of power rather than returning to a default open or closed state.
• Can this valve be used for steam applications? Yes, the VG7241ST is rated for saturated steam up to 15 psig, provided the media temperature remains within the specified limits.
• What control signal is required for the VA-7150G? It requires a 24Vac incremental (floating) signal. Ensure your controller is configured for three-wire floating output to achieve proper modulation.

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