| 摘要 |
PCT No. PCT/GB83/00312 Sec. 371 Date Jul. 30, 1984 Sec. 102(e) Date Jul. 30, 1984 PCT Filed Nov. 30, 1983 PCT Pub. No. WO84/02171 PCT Pub. Date Jun. 7, 1984.A break-away coupling device for use with a hoseline or pipeline for conveying hazardous fluids. The coupling comprises coupling members (10, 11) of generally tubular form for connection at their outer ends (14, 15) to a hoseline, pipeline or other fluid-supply or fluid-delivery point, and provided at their inner ends with complementary faces (12, 13) which are held in sealing engagement by frangible connectors (18). The coupling members have valve seats (45), and valve members (30, 31) which are urged towards closing engagement with said seats but are usually being held against the springs (36) and out of engagement with the seats until the coupling members are separated on breaking of the connectors. An annular separating ram (51) is provided to apply pressure between the coupling members which will break the connectors and separate the coupling members, whereupon the valve members will seat under spring action and minimize spillage of the fluid being conveyed.
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