482-066 SE210 3-3/8″ AIR VALVE GASKET DISC

This is a complete gasket disc assembly that provides an airtight seal for the SE210 secondary air valve. Typical replacement cycle is 3 – 5 years. Keeping the disc clean will help prolong life. A leaking air valve can result in a smoldering fire and condensation in the heat exchanger inside the boiler and the flue.