This model is a single-port air pressure switch

Engineered for use with the TCL and TCLE series

End-blackening usually indicates the lamp is reaching the end of its service life or that the ballast is delivering improper voltage

and pilot lines requiring ANSI Z21

Rotation is determined by looking at the air-discharge side of the blade

Watts 0780336 K Valve Arm This model is a single-portThe Watts 0780336 K Valve Arm is a heavy duty bronze replacement valve arm engineered for 1 to 2 inch float valves. Often identified by technician designation 2JB 3, this component is essential for maintaining mechanical leverage in high capacity fluid level control systems. It features a standard 3 8 16 thread size, ensuring a secure and precise connection to stems and floats within the Watts FLT Valve Arms Series. Constructed from high grade bronze,