Hydrostatic test plugs will be provided for all the spring loaded safety valves.
每只弹簧安全阀都带有水压试验堵塞及试验压紧工具。
The QH type safety valves are composed of two spring loaded safety valves paralleling. There is only one inlet.
QH型切换阀是两个弹簧式安全阀并联，具有同一进口。
The QH type safety valves are composed of two spring loaded safety valves paralleling. There is only one inlet.
QH型切换阀是两个弹簧式安全阀并联，具有同一进口。
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