| 摘要 |
PURPOSE: A check valve type coupling device is provided to secure the airtight seal of a valve body for high-pressure fluid by employing an O-ring member to which foreign materials cannot easily attach. CONSTITUTION: A body(1) has an inner protrusion(12) which is formed of a partially protruding edge of a through hole(11) to inlet and outlet spaces(11a,11b) in the longitudinal direction. A valve body(2) is located in the outlet space of the body with an edge pressed against the inner protrusion and moved to open a side flow path(11d) according to the pressure of fluid drawn in from the inlet space, and the valve body has an annular receiving groove(22a). A high-pressure O-ring member(3) is inserted and fixed in the receiving groove and selectively contacts the inner protrusion by being pressed according to the movement of the valve body.
|
