The Whale AK0553 Spares Kit is for Gusher Galley Mk3 pumps. It contains o-rings, diaphragms, sealing wash, self tapping screws, valve stems and valve nitriles. - Features: Completely enclosed protected diaphragm. 10. 5 gallons per minute. Only 4-3/4 deep for low profile installation. Rotable inlet and outlet nozzles for flexibility. Supplied complete with deckplate.