| 摘要 |
<p>A method of injecting fluid into a valve comprises the steps of (a) introducing the fluid into the valve under pressure through a first, inlet port (40) in the valve housing (14); (b) providing a second, outlet port (42) in the valve housing (14) for ingress of p material displaced from the interior of the valve; and (c) monitoring the pressure of the fluid introduced into the valve through a third, monitoring port (46) in the valve housing (14). By monitoring the pressure of the fluid introduced into the valve it is possible to prevent the applied pressure from exceeding the safe working pressure of the valve.</p> |
