Patent ID: 7040876

Claim:
Valves for a diaphragm pump comprising: at least a diaphragm portion which forms a pump chamber; a diaphragm main body which has a planar portion integrally connected to said diaphragm portion; a suction valve which is formed at the planar portion of said diaphragm main body located between said diaphragm portions or in the vicinity of said diaphragm portion; a discharge valve which has a V-shaped or U-shaped section; and a valve housing which has a concave portion having a V-shaped or U-shaped section and an air vent connecting a side surface of said concave portion to said diaphragm portion, wherein said discharge valve is disposed in close contact with the concave portion of said valve housing so as to be capable of opening and closing said air vent, and wherein said diaphragm portion has a driving portion and performs a pumping action by reciprocating said driving portion.