RELIEF VALVE FOR OIL FILTERS OR THE LIKE

摘要

An oil filter cartridge has a relief valve unit that shunts the oil flow from the inlet to the outlet of the cartridge when the filter element becomes clogged. The unit comprises a shell that telescopes within the tubular filter medium of the cartridge. The shell contains a valve disc with integral leaf springs that bias the valve disc against valve ports in a plate or wall that is attached to an end of the shell so that when the valve disc is in open position, the oil flows from the inlet of the cartridge through the valve ports and into the shell and then outwardly through a central opening in the plate.