Series TC-4 Test-N-Check Valves

McDonnell & Miller : Valves :

Features and Benefits

  • For hot water boilers
  • Simplifies ASME CSD-1A. code mandated testing of low
  • water cut-offs by eliminating the need to drain the system
  • Includes one upper and one lower valve for mounting at
  • crosses in equalizing lines
  • Restricts water flow when the low water cut-off’s blow
  • down valve is open
  • Adjustable built-in vacuum breaker in upper valve
  • provides rapid evacuation of water from the float chamber
  • 1″ NPT
  • Maximum temperature 250°F (121°C)
  • Maximum pressure 160 psi (11 kg/cm2)

Parts Lists


      To build and operate an efficient water system, you need both the right products and experts who know the application. Here, you can access our trusted network of partners who have the experience you need to get the job done right.

      To find Representative in Canada select your Province:

      Find your local dealer
      Postal Code

      Find International Representatives