초록 ▼

A drain assembly for diesel engine fuel filters and the like consists of separate drain and vent valves mounted closely adjacent one another in the bottom wall of the collection bowl of the filter and intercoupled so that actuation of the drain valve also actuates the vent valve after the drain valv

A drain assembly for diesel engine fuel filters and the like consists of separate drain and vent valves mounted closely adjacent one another in the bottom wall of the collection bowl of the filter and intercoupled so that actuation of the drain valve also actuates the vent valve after the drain valve has been opened. The vent valve is a spring biased valve located higher than the drain valve and preferably is a tire core type valve. The drain valve may be a spring biased push type valve or a valve threadedly mounted in the bottom wall of the collection bowl for vertical movement to open a valve seat in the collection bowl and in either embodiment includes a shoulder interengageable with the vent valve for actuation of the latter. Both drain valves include a hose connector which rotates relative to the collection bowl or cartridge assembly to facilitate replacement of the latter, the threaded type drain valve including a snap-in type swivel for the hose connector.

대표청구항 ▼

A drain assembly comprising a fluid chamber, first and second valves operative sequentially, first to initiate drainage of said fluid chamber in which said valves are disposed and then to open a vent to release a partial vacuum in said chamber as fluid is drained therefrom, said first valve having a

A drain assembly comprising a fluid chamber, first and second valves operative sequentially, first to initiate drainage of said fluid chamber in which said valves are disposed and then to open a vent to release a partial vacuum in said chamber as fluid is drained therefrom, said first valve having a valve seat disposed at a first location in said chamber, said second valve having a valve seat disposed at a second location higher in vertical disposition than said first location, said first valve having an open position and a closed position and movable therebetween for controlling fluid flow through said first valve seat, and means coupling said first and second valves for actuating said second valve in response to movement of said first valve as said first valve is between said open and closed positions.