Filter stand assembly

A modular filter drain assembly for a duplex filter having two vertically oriented cylindrical filter canisters each containing a plurality of replaceable cylindrical filter elements, said filter canisters having selectively removable top closures swingable to a top pan area, said filter canisters being spaced apart and connected by valved piping between them, a vertical plane between vertical axes of said canisters defining a plane of reference, said drain assembly comprising a sump base pan with side walls embracing the lower portion of said assembly and said filter canisters, a stand outboard of each of said filter canisters, extending substantially perpendicularly to the plane of reference and projecting beyond the said canisters in each direction, each of said stands comprising vertical legs at corners thereof, a top drain pan near an upper end of said legs and supported thereby, a filter element support pan intermediate said top drain pan and said sump pan, and a platform extending between said stands with an edge generally parallel to said plane of reference and adjacent said filter canisters;

• said top drain pan having filter element receiving passages near said platform and a drain passage;
• said filter element support pan having a surface below said filter element receiving passages for engaging a lower edge of said filter elements, and drain means, said filter element support pan surface being imperforate but for said drain means for permitting liquid from used filter elements to drain to said sump pan, said filter element support pan surface being spaced below said top pan a distance sufficiently less than the height of said filter elements to cause said elements to project above said top drain pan enough to permit the filter elements easily to be removed manually from said filter element passages.