McDonnell & Miller Test-N-Check Valves Series TC-4

Features and Benefits:

  • For use on 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 connection
  • Maximum temperature 250°F (121°C)
  • Maximum pressure 160 psi (11 kg/cm2)