This specific part is a #45 drill size orifice

This genuine ASCO spare part is optimized for systems handling hot water or low-pressure steam

This genuine OEM part ensures the manifold pressure remains consistent across varying load changes

the 120V AC coil can typically be serviced or replaced without removing the brass valve body from the piping

Johnson Controls D-4073-3 Damper Actuator R-410A This specific part is aThe Johnson Controls D 4073 3 is a robust pneumatic piston damper actuator designed for the precise positioning of dampers in VAV boxes, terminal units, and unit ventilators. Built with a 5 10 PSI spring range and a full 3 inch stroke, this multipurpose device provides reliable proportional or two position control. It features a glass reinforced polymer housing and a 2 way swivel connection to ensure non binding movement during operation. The D 4073 3