Utica-Dunkirk 43300977 Push Nipple 318518-761 this kit supports two-stage gas

this kit supports two-stage gas valves including the White-Rodgers 36G

the copper material creates a mechanical seal

saving critical rail space in dense control enclosures

as this unit replaces several legacy Protech and UTEC versions

ensuring consistent flow and long-term reliability

Utica-Dunkirk 43300977 Push Nipple 318518-761 this kit supports two-stage gasThe Utica Dunkirk 43300977 Push Nipple is a heavy duty, cast iron 4 inch push nipple engineered specifically for sealing the cast iron sections of Dunkirk D249 and ESC Series IV boilers. Unlike standard rubber gaskets or steel nipples that can fail under extreme thermal cycling, this machined cast iron nipple shares the same expansion coefficient as the boiler sections themselves. This ensures a leak proof boiler seal that maintains structural