Why are the terminal bolts welded instead of crimped

This allows the vent limit switch to be wired in series with the thermocouple signal

12-24 x 1/2 inch self-tapping hex washer-head screws for securing the bracket to the ductwork

the seal cap O-ring

Compact Footprint: Designed to save space within enclosures while providing pre-stripped wire leads for quick termination

Watts 0061952 Preventer Els PW 17895 Why are the terminal boltsThe Watts 0061952, also identified as the 9DS 1 2, is a specialized dual check valve with an intermediate atmospheric vent designed specifically for non health hazard applications. As a veteran grade backflow preventer, this unit is engineered for continuous pressure systems such as boiler feed lines, processing tanks, and laboratory equipment. The 9DS M3 configuration features a 1 2 inch sweat (SWT) union connection and a forged brass body, ensuring