this is a complete valve assembly

erratic burner flames

Enhanced System Logic: Supports automatic changeover (ACO) and morning warm-up (MWU) for optimized thermal comfort

and main building management systems

667R1G3 Actuator is an ultra-high torque reversing actuator specifically engineered for high-precision control of air dampers

Resideo VC6930NB6632 Valve R-134A this is a complete valveThe Resideo VC6930NB6632 is a professional grade 1 2 inch NPT 3 way hydronic valve engineered for precise fluid management in fan coil units and air handlers. Designed for both hot water and chilled water HVAC systems, this valve body utilizes a balanced cartridge design that enables linear flow characteristics and exceptional shut off performance against high differential pressures. With a 1. 5 CV flow rating, it is optimized for low capacity