Combustion Safety: Maintains the factory-specified air-to-fuel ratio

Manual Reset Feature: Ensures manual reset water heater control logic

though it is often recommended to service the internals while the coil is removed

making it a versatile HMI-1TT4 sight glass for various field applications

Parker 7321KBY61640 Valve 30067439-890 Combustion Safety: Maintains the factory-specifiedThe Parker 7321KBY61640 is a high performance 1 4" NPT solenoid valve designed specifically for automated condensate management in mission critical compressed air systems. Built as a 2 way normally closed timer drain valve, this unit features a rugged brass body and a pilot operated internal pilot supply, ensuring reliable cycling even in high demand industrial environments. Engineered to handle an operating pressure differential of 3 to 300 PSI, it