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This valve is the standard NG gas valve replacement for many Williams wall heaters requiring a 1/2" connection
This SJ-328-36 direct acting thermostat operates with an open high contact configuration
Compact Profile: The 3 cubic inch capacity is ideal for tight installations in reach-ins and small split systems
The Maxon 42430 acts as the primary interface for air and fuel integration
Electronic Precision: Provides a minimum differential as low as 5 psi with an accuracy of ±1
Schneider Electric (Barber Colman) MK-4821 Pneumatic Valve Actuator R-410A This valve is the standardThe Schneider Electric MK 4821 is a professional grade pneumatic valve actuator designed for the precise positioning of 1 1 2" to 2" VB 9XXX series globe valves in commercial HVACR systems. Built for the rigors of mechanical rooms, this actuator features a rugged die cast aluminum housing and an 11 sq. in. effective diaphragm area. It operates on a proportional pneumatic signal with a nominal 8 to 13 psi spring range, ensuring reliable spring return