Emergency release mechanism for fluid handling equipment

摘要

Each of the pair of couplers includes a coupler body having a vacuum double tube structure, a valve seat installed inside the front end of the coupler body and forming an opening through which unloading fluid flows, and a valve body disposed in the coupler body. The body is configured to close the opening by contacting the valve seat by the biasing force of the spring when the couplers are separated, and when the couplers are connected, the valve body is pressurized by the counterpart''s valve body and separated from the valve seat to open the opening. When the valve body is in contact with the valve seat, the holding member for holding the seal member sealing the valve body and the valve seat, a resin block covering the surface of the tip side of the holding member, and through an opening receiving the block. And a protruding metal actuating member.