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

McDonnell & Miller TC-4 Test-N-Check valves are for use on hot water boilers. They simplify ASME CSD-1A. code-mandated testing of low water cut-offs eliminates the need to drain the system. They include one upper and one lower valve for mounting at crosses in equalizing lines. They restrict water flow when the low water cut-off’s blow-down valve is open. And they feature an adjustable built-in vacuum breaker in the upper valve that provides rapid water evacuation from the float chamber.

Features:

• 1″ NPT connection
• Maximum temperature 250°F (121°C)
• Maximum pressure 160 psi (11 kg/cm2)