McDonnell 317353 Replacement Lower Valve

McDonnell & Miller - 317353 For isolation of equalizing lines during low water cut-off testing

• 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
• 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)