VG7842LT+74CHGA

The VG7842LT+74CHGA, manufactured by Johnson Controls, is a functional 3-way mixing control valve designed for precise temperature and flow regulation within industrial systems. This valve type is favored for its capability to manage mixing applications effectively. Constructed from cast bronze, it features brass trims for enhanced durability. The compact 3/4-inch valve size allows for seamless integration into existing piping layouts, making it versatile for a range of uses.

This valve is operated by a VA7830-HGA-2 electric actuator, which employs a spring-return system with a stem-down configuration. The actuator supports proportional control, accepting input signals from 0 to 10 Volts DC. Users have the option to select between on/off or floating control modes in the field, depending on specific operational needs.

Operating at a voltage rating of 24 VAC, the VG7842LT+74CHGA functions efficiently within standard input frequency ranges of 50 to 60 Hz. The valve can withstand an operating temperature span of 2°C to 65°C and is designed to handle fluid temperatures as high as 140°C for water and 38 psig for saturated steam.

Regarding pressure tolerances, it has a maximum closeoff pressure of 289 psig (1,993 kPa) for Port A and 321 psig (2,213 kPa) for Port B, which ensures reliable operation under varying conditions. Notably, the device's leakage rate is an impressively low 0.01% of maximum flow, aligning with the ANSI/FCI 70-2 Class 4 standards, indicating high reliability and performance excellence.