| 摘要 |
<p>A coupling (31) for connection in a pipeline and comprising an upstream passage having an inlet and outlet (32, 33) and a downstream passage having an inlet and outlet (34, 35), the upstream outlet and downstream inlet having mutually exclusive central axes and being arranged to be connected with a fluid management device (75) which contains a passage for interconnecting the upstream and downstream passages, the fluid management device comprising a monitoring device (67, 87) for measuring a quantity of fluid, and a flow controller (10, 88) in form of a shut-off valve. The coupling (31) or the fluid management device may include reverse flow check valves (24, 43, 70, 81, 106, 109) and a two-way check valve (24, 59).</p> |
