Diaphragm valve for faucets

F - Mech Eng,Light,Heat,Weapons – 16 – K

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137/125

F16K 11/00 (2006.01)

Patent

CA 1101305

ABSTRACT OF THE DISCLOSURE An improved diaphragm valve for faucet valve assemblies is disclosed. The diaphragm has a thick valve closure portion received in an end recess in a valve plunger, the plunger being nonrotatable and reciprocably mounted in the valve body for movmement relative to a valve seat against which the valve closure portion of the diaphragm is held in valve closed position. The valve diaphragm has a thin supporting section extending radially from the valve closure portion which rolls during the stroke of the valve plunger and the end of the valve plunger and the sidewall of the outlet chamber in the valve body provides a continuous surface against which the supporting section of the diaphragm is pressed without being stretched by the pressure of water in the outlet chamber in the valve open position of the diaphragm. In the valve closed position of the diaphragm, the inlet water pressure acts against the diaphragm to enhance the seal at the valve seat.

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