Raypak R335A/R335B Uncommon Refractory Kit (005285F) filters When round fittings or housings

When round fittings or housings need controlled turning

Supports more reliable heater operation

A vacuum hose helps connect a compatible cleaner to the suction path that powers its operation

Helps restore pressure-sensitive control in compatible systems

Helps restore dependable heater regulation behavior

Raypak R335A/R335B Uncommon Refractory Kit (005285F) filters When round fittings or housingsThe Raypak uncommon refractory kit is designed for compatible R335A and R335B heater applications where the supported refractory components in a specific uncommon configuration need replacement. A refractory kit is useful because it helps protect the burner area from heat exposure while supporting the intended combustion environment inside the heater. This replacement is especially useful when the original refractory material is cracked, crumbling,