Special rapid release vent valve, mold down.
特制急速放泄阀门，开模下降。
Open vent needle valve and bleed air from hose. Then close vent valve.
开启排气针形阀，并从软管排放空气。然后关闭排气阀。
Open vent needle valve fully until dripping from vent connection stops.
完全开启排气针形阀直到从排气连接处的滴漏停止为止。
Vent the piping and test valve body cavity to remove air or steam.
排放管道和试验阀门体腔内的空气或蒸汽。
Open needle valve "b" to bleed air and then close "b" and vent needle valve.
开启针形阀“B”排放空气，然后关闭“B”和排气针形阀。
Examine if the safety valve is normal, vent pipe is fastness.
检查安全阀有无异常，排气管支撑牢固。
Open valve a to vent air from the vent hose.
开启阀门A从排气软管处排出空气。
Open the valve on the vent line just upstream the trip valve.
打开速闭阀上游放空管线上的阀门。
Above valve mouth in, pull out, give vent to anger door needle, set free to the limit;
气门嘴处于上方，拔出气门针，余气放尽；
Above valve mouth in, pull out, give vent to anger door needle, set free to the limit;
气门嘴处于上方，拔出气门针，余气放尽；
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