Siemens Combustion SQM50.464R1G3R Actuator 319847-401 a primary regulator must be

a primary regulator must be installed upstream

The Watts 0887211 Repair Kit (model RK 909-CK2 2 1/2-3) is a professional-grade solution for servicing the second check valve on 2-1/2 inch and 3 inch Watts Series 909 reduced pressure zone (RPZ) backflow preventers

The Veris Industries H-701 Hawkeye is a high-performance solid-core current switch engineered for precise load monitoring in commercial and industrial HVACR systems

it is a streamlined drop-in for technicians who are reusing existing mounting hardware or performing a targeted swap-out

Enhanced Feedback: Includes an internal SPDT auxiliary switch for position indication or interlocking equipment

Siemens Combustion SQM50.464R1G3R Actuator 319847-401 a primary regulator must beThe Siemens SQM50. 464R1G3R Actuator is a high precision reversible motor designed for the positioning of flow control valves, butterfly valves, and dampers in large scale commercial and industrial combustion systems. Engineered for high torque burner control, this unit delivers 140 in lb of torque with a 25 second run time for a 90 degree stroke. It operates on a 4 20mA control signal, allowing for seamless integration into modulating burner control