Dwyer Instruments 123-7000-153 Control R-407A 4-Speed Versatility: Multiple speed taps

4-Speed Versatility: Multiple speed taps allow for customized CFM delivery across heating and cooling stages

though this specific model is intended for protected rooftop housings

Includes a replacement shaft key for a complete mechanical lock under load

The CVP pilot valve controls pressure settings within compatible Danfoss regulating valves

ensuring the system only utilizes free cooling when the outside air is more efficient than mechanical refrigeration

Dwyer Instruments 123-7000-153 Control R-407A 4-Speed Versatility: Multiple speed tapsThe Dwyer Instruments 123 7000 153 is a heavy duty boiler water level control designed for demanding steam plant environments. Built with a rugged cast iron chamber, this unit serves as a critical low water cut off or feed water control for high pressure systems. It features a reliable SPDT snap action switch mechanism that stabilizes operation by eliminating rapid cycling caused by surging or turbulent water levels. Housed in a general purpose