压缩机在启动时防喘振阀全开。
Compressors are run up with the anti surge valve fully open.
螺杆泵应在吸排停止阀全开的情况下起动，以防过载或吸空。
Screw pump should be in suction stop valve fully open under the condition of starting, in case of overload or empty.
当准备好启动离心式泵时，吸入阀全开，容积式排出阀节流。
When ready to start centrifugal pumps, fully open suction valves and throttle discharge valves of a positive displacement.
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