Dual Filter for Lubricating Oil.
DEPARTMENT OF THE NAVY WASHINGTON D C
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The present invention has a housing having two sections for containing filter elements. Two angle-ported ball valves are attached to common stem and shift of oil flow from one section to the other is accomplished by 90 degree rotation of the two ball valves. The cover on each section is designed so it cannot be removed until the section is depressurized and fluid flow fully shifted to the other filter. Depressurization is accomplished automatically when the ball valves shift the flow from one filter to the other. When a cover is removed from the housing, an automatic locking device prevents rotation of the ball valves thereby preventing the flow of oil to a section that has an opened cover. This provides a dual filtering system for shipboard use having safety features for preventing accidental spillage of oil.
- Marine Engineering
- Pumps, Filters, Pipes, Tubing, Fittings and Valves