The Webster 22R221C-5C3 Fuel Unit is a precision-engineered fuel pump designed to deliver a consistent supply of fuel to oil-fired heating equipment. It works by drawing fuel from the storage tank, pressurizing it, and supplying it to the burner for efficient combustion. Commonly used in oil-fired furnaces, boilers, and commercial heating systems, this fuel unit helps maintain reliabl... https://www.partshnc.com/22r221c-5c3-webster-fuel-unit-3450-rpm-ccwl-21-gph