ensure you connect the high-pressure source to the "H" inlet and the low-pressure/static source to the "L" inlet

Precise Thermal Regulation: The fixed 1

Y64T21-0 is the direct replacement for Y64T22-0

or a frayed ignition cable leading to intermittent spark

Industrial Durability: Manufactured in Mexico with high-authority quality standards for long-term resistance against elastomer degradation

Lochinvar & A.O. Smith 100111593 Gasket 322056-301 ensure you connect the high-pressureThe Lochinvar & A. O. Smith 100111593 Gasket is a critical OEM replacement part designed specifically for sealing the burner assembly in high efficiency boilers and commercial water heaters. Engineered from high temperature silicone, this silicone burner gasket maintains structural integrity under extreme thermal cycling, preventing combustion gas leaks and ensuring a precise airtight seal. Field technicians often require this component during