Patent ID: 8256744
Filing Date: 2012-09-04
Classification: F16J,F16K

Abstract:
1. A direct touch type metal diaphragm valve comprising: (a) a body equipped with a valve seat on a bottom face of a concave valve chamber, wherein the valve chamber communicates with a fluid inlet and a fluid outlet; (b) a metal diaphragm disposed above the valve seat, wherein to hold hermeticity of the valve chamber, the metal diaphragm moves upward and downward so as to directly contact the valve seat by a center part of the metal diaphragm; (c) a stem disposed above the metal diaphragm so as to descend and ascend, wherein the stem allows the center part of the metal diaphragm to descend; (d) an actuator connected to the stem so as to allow the stem to descend or ascend; and (e) a press adaptor disposed above an outer peripheral part of the metal diaphragm so as to hold the metal diaphragm hermetically between the press adaptor and the bottom face of a valve chamber and to control descent of the stem at a time when the valve is fully closed, wherein the metal diaphragm includes a laminated body comprising