12" Lid w/ 4" Center shipclass=500 1" MNPT x 3/4" FNPT

1" MNPT x 3/4" FNPT Stainless Steel Reducer Bushing

2-1/4" Hole Required

you'll have no difficulties securing it in a truck and bringing it out into the field or keeping it stationary somewhere for regular use

D303 & D403 Diaphragm Pumps

12" Lid w/ 4" Center shipclass=500 1" MNPT x 3/4" FNPTThe Hypro 12" lid with 4" center comes solid or with a labyrinth breather, which uses a special design to make installation a snap. Male threaded, this lid is made to last with top quality materials. Great as a replacement part that will fit just like new. It is designed to work for the 9950 12240 basket filter. The rim is also available, if needed.