The Crown Verity N4-WC67 Low Water Cut-Off is a safety control device used in compatible steam and water-heating equipment. It monitors water levels within the system and interrupts operation when water drops below a designated level, helping protect internal components from damage caused by low-water conditions. This assembly features dual internal switches, normally open and normally closed terminals, a 1/2" NPT inlet, 3/8" NPT outlet, and 3/4" NPT blowdown connection for integration into the equipment system. It serves as an important part of the water level monitoring circuit in commercial applications.