如果泄压口正常，那么，不接工件，用高压截止阀截断压力，看试验机本身能否保住压力。
If the discharge pressure is normal, so, don't answer the artifacts, cutting with high pressure cut-off valve pressure, see if we can keep pressure testing machine itself.
配置优质安全阀、截止阀、压力表及压力控制器，确保锅炉安全可靠运行。
Equipped with the high quality safety valve, cut-off valve, pressure gauge and pressure controller to ensure the safe and reliable running of the boiler.
装置长期停止使用时，应关闭油口与压力油管之间的截止阀，保持蓄能器的油压在充气压力以上。
When accumulator is not used for a long period, the check-valve shall be closed to ensure that the oil pressure is above that charging pressure.
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