Description
Johnson Controls VG7241ES+3801B Overview
The Johnson Controls VG7241ES+3801B is a factory-assembled, 2-way normally open valve and pneumatic actuator combination engineered for precise flow control in commercial HVAC and building automation systems. The assembly pairs a cast bronze valve body with brass trim with a spring return pneumatic actuator, delivering reliable, repeatable performance in hydronic heating and cooling applications.
Valve Features
- 2-way, normally open (N/O) configuration
- 1/2″ NPT end connections for straightforward pipe installation
- 1.8 Cv flow coefficient for accurate flow sizing
- Equal percentage flow characteristic for stable, responsive control across the full stroke range
- Cast bronze body construction for durability and corrosion resistance
- Brass trim for long service life in hydronic media
Pneumatic Actuator Features
- Spring return pneumatic actuator (Model 3801B) for fail-safe operation
- 3–6 PSI spring range provides predictable, proportional control response
- Spring return action ensures the valve returns to the normally open position on air loss for system safety
- Designed for direct mounting to the VG7241ES valve body as a matched assembly
Applications
- Hydronic heating and cooling coil control in commercial buildings
- Air handling unit (AHU) hot water and chilled water coil service
- Fan coil unit (FCU) flow regulation
- Building automation and pneumatic control systems
Why Choose the VG7241ES+3801B
Factory-assembled valve and actuator combinations from Johnson Controls eliminate field assembly errors and ensure optimal performance from day one. The equal percentage flow characteristic allows for fine-tuned control at partial loads — ideal for variable flow hydronic systems. The spring return pneumatic actuator provides inherent fail-safe functionality, protecting the system in the event of air supply loss. The cast bronze body and brass trim are well-suited for the demands of commercial HVAC service.
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