Description
The Johnson Controls VG1245EP is a precision-engineered two-way ball valve designed for demanding HVAC hydronic and commercial building automation applications. Featuring an equal percentage flow characteristic, this valve delivers accurate, stable modulating control across a wide range of flow conditions — making it an ideal choice for chilled water, hot water, and steam coil applications where tight temperature regulation is critical.
Key Features
- 1-1/2″ NPT end connections for straightforward pipe installation
- 18.7 Cv flow coefficient for reliable, high-capacity flow control
- Two-way configuration for standard supply or return line service
- Equal percentage flow characteristic for precise modulating control
- Forged brass body for superior strength, durability, and corrosion resistance
- Stainless steel trim for long service life and compatibility with treated hydronic fluids
- Designed for use with Johnson Controls VA and VG series actuators
Application Suitability
- Chilled water and hot water coil control
- Fan coil units and air handling units (AHUs)
- Building automation and DDC control systems
- Commercial HVAC hydronic distribution systems
Why Equal Percentage Flow?
The equal percentage flow characteristic means that equal increments of valve stem travel produce equal percentage changes in flow — providing superior controllability at low flow rates and preventing hunting or instability in modulating control loops. This makes the VG1245EP especially well-suited for variable flow hydronic systems where precise temperature control is essential.
Construction Highlights
- Body Material: Forged Brass
- Trim Material: Stainless Steel
- Connection Type: NPT (National Pipe Thread)
- Valve Size: 1-1/2″
- Flow Coefficient (Cv): 18.7
- Flow Characteristic: Equal Percentage
- Valve Type: Two-Way Ball Valve
The VG1245EP is part of Johnson Controls’ trusted VG Series valve family, engineered to integrate seamlessly with Johnson Controls actuators and building management systems (BMS). Its robust forged brass body and stainless steel trim ensure reliable performance in commercial and light industrial HVAC environments.
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