Johnson Controls VB-3966-1 Valve Body 30067439-890 This architectural design enables a

This architectural design enables a pneumatic thermostat deadband

maintaining identical electrical characteristics and physical mounting points

Exceeding this limit can damage the internal diaphragm and affect switching accuracy

Do I need to replace the solenoid coil when using this repair kit

Does the shape matter if the specs match

Johnson Controls VB-3966-1 Valve Body 30067439-890 This architectural design enables aThe Johnson Controls VB 3966 1 is a robust 1 2 inch flare valve body engineered for precise control in HVAC hydronic systems. Designed for hot and cold water service, this two way valve features a Push Down to Open (PDTO) action and a 1. 7 Cv flow coefficient, making it ideal for terminal units like fan coils and reheat coils. The equal percentage flow characteristic ensures stable control throughout the stroke, compensating for the non linear heat