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

01" construction

This HVAC safety switch is commonly utilized in Reznor unit heaters and makeup air systems with the BX1 door switch option

Optimized Compatibility: Replaces legacy Lennox part numbers 104849-02 and 66703100 without modification

including the McDonnell & Miller 164760

Trane OPR0120 Actuator 326058-755 is a comprehensive field serviceThe 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