TMC Diaphragm Foot Galley Pump Self-Priming and Double Acting Function FO-741 BUILT with High Quality Materials and CERTIFIED by ISO-9001 and ISO-14001 CAPACITY of 4 Gallons per Minute (908 LPH), HANDFREE Oparation and Easy Installation DIMENSION of the Products is 9.32" (236.8mm) x 6" (152.6mm) x 4.86" (123.5mm) This Foot Pump is SELF-PRIMING and double acting with a HOSE DIAMETER of 9/16" (14.5 mm) CAN BE INSTALLED inside a locker space with the pedal only projecting. Positioning is easy with quick adjustable hose connection