If the diaphragms on your Hypro D252 or D403 Diaphragm Pump are worn out or damaged, it might be wise to replace them, in order to keep your pump performing at its optimal level.
Two Desmopan diaphragms (9910-800085) are available to keep the Hypro D252, D252GRGI, D403, and D403GRGI Diaphragm Pumps in good working condition.