and required washers

is a comprehensive field service solution designed specifically for maintenance of the Watts 9D dual check valve with atmospheric vent

and orifice)

including the McDonnell & Miller 164760

Trane OPR0120 Actuator 326058-755 and required washersThe Trane OPR0120 is a specialized 24V modulating valve actuator engineered for precise proportional control in commercial and residential HVAC systems. Designed as a direct OEM replacement part, this modulating control actuator integrates seamlessly with Trane floating controllers and 3 wire 24Vac signals to regulate the flow of hot or chilled water through VAV terminals, fan coil units, and reheat coils. Its compact footprint ensures a low profile