Patent ID: 6415818
Filing Date: 2002-07-09
Classification: F16K,Y10T

Abstract:
A diaphragm solenoid valve comprising a valve body having a first port and a second port for main fluid in a mounting face to be mounted to a base, a valve seat mounted in a flow path connecting both said ports, a diaphragm for opening and closing said valve seat, a plate for sandwiching and fixing an outer peripheral portion of said diaphragm between said plate and said valve body, a driving chamber formed between said plate and said diaphragm to be separated from said flow path, and a pilot valve disposed on said plate to supply pilot fluid different from said main fluid to said driving chamber,wherein said diaphragm has a central main body portion for opening and closing said valve seat and an elastic support portion surrounding said main body portion, a disc is encapsulated in said main body portion, a sealing rib for coming in contact with and separating from said valve seat is provided to one face of said main body portion, and a cushion projecting portion for coming in contact with a cushion receiving portion of said plate in valve opening is formed on a back face of said main body portion.