McDonnell & Miller TC-4 Valves Els PW 17895 this unit offers advanced staging

this unit offers advanced staging for systems requiring two heating and two cooling stages

this electrode is likely the culprit

and pneumatic thermostats in commercial environments

the assembly is rated for media temperatures up to 250°F (121°C)

Universal Compatibility: Standard 1/2" NPT inlet/outlet facilitates easy integration into existing American hydronic piping

McDonnell & Miller TC-4 Valves Els PW 17895 this unit offers advanced stagingFor industrial boiler applications requiring precise low water cut off (LWCO) verification, the McDonnell & Miller TC 4 Test and Check Valves (Part Number 195000) provide a critical interface for maintenance and safety compliance. This 1" NPT dual valve set is engineered specifically for use with McDonnell & Miller controllers, allowing technicians to isolate the water column and simulate low water conditions without draining the entire system.