Vacuum pressure valve of the valve is below standard atmospheric pressure.

真空阀工作压力低于标准大气压的阀门.

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Prepare the constant pressure valve, valve ball and ball seat.

配备定压阀, 阀球和球座.

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Casing back pressure valve plays a important role in well cementing operation as a casing accessories.

套管回压阀作为一种简便的套管附件,在固井施工作业中起着重要作用.

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Electro - vacuum Differential Pressure Valve ■ DYC - JQ electro - vacuum valve is a safely valve for mechanical vacuum pump.

是机械真空泵安全阀,安装于机械真空泵的进气口,并与泵同步开启和关闭.

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The operating principle, structure and advantages of dual controlled gas constant pressure valve are analyzed.

分析了双控燃气稳压阀的工作原理 、 结构和优点.

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Interference are easily caused in multi - cylinder hydraulic system for misuse of pressure valve.

多缸 液压系统极易因压力阀使用不当而产生干涉.

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Electro - vacuum Differential Pressure Valve ■ DYC - JQ electro - vacuum differential Pressure valve is valve for mechanical vacuum pump.

JQ型电磁真空压差阀是机械真空泵安全阀,安装于机械真空泵的进气口,并与泵同步开启和关闭.

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After working, close the gas bottle or inlet valve and adjust pressure valve to be relax.

工作结束后, 应关闭气瓶或管路进气阀门,逆时针旋转调节把手,使之旋到松弛状态.

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