What is the recommended refrigerant charge for this unit

rotating the wheel changes the spring tension against the bellows

Built with a robust bellows system

Inspect the plate for signs of scale buildup

Johnson Controls VG7882CT Valve 320788-703 What is the recommended refrigerantFor veterans in the mechanical room, the Johnson Controls VG7882CT Valve is the go to choice for precise temperature regulation in hydronic systems. This 1 2 inch 3 way mixing valve is engineered with a cast bronze body and brass trim, ensuring reliable performance when managing water or 50% glycol solutions. With a 0. 73 Cv rating and linear flow characteristics, it provides the accurate throttling required for fan coil units and small reheat coils.