this is the main valve only

For service technicians and contractors maintaining intermittent pilot systems

Why should I replace the pilot assembly instead of just cleaning it

If you are replacing an older Utica-Dunkirk boiler part

Engineered with a 3/8 inch bore and a clockwise (CW) rotation

Browning BX37 Belt 319847-401 this is the main valveThe Browning BX37 is a high performance, classical section Gripnotch belt designed for the demanding requirements of commercial HVACR systems. Engineering with a 40 inch outside diameter and a 21 32 inch top width, this BX37 V belt features a precision molded cogged design that significantly increases flexibility compared to standard wrapped belts. This increased flexibility allows the BX37 to operate efficiently on smaller diameter pulleys, while the