| 摘要 |
A method is provided for the injecting fluid into a valve by, for example, introducing the fluid into the valve under pressure through a first, inlet port in the valve housing, providing a second, outlet port in the valve housing for ingress of material displaced from the interior of the valve; and monitoring the pressure of the fluid introduced into the valve through a third monitoring port in the valve housing. 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.
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