原文：
　 液化气专用阀属于强制密封式阀门，所以在阀门关闭时，必须向阀瓣施加压力，以强制密封面不泄漏。当介质由阀瓣下方进入阀六时，操作力所需要克服的阻力，是阀杆和填料的磨擦力与由介质的压力所产生的推力，关阀门的力比开阀门的力大，所以阀杆的直径要大，否则会发生阀杆顶弯的故障。 液化气专用阀除了以上易发故障外，通常还有以下故障： 1、通电不动作 原因分析：电源接线接触不良、电源电压变动不在允许范围内、线圈短路或烧坏。 处理方法：接好电源线、调整电压在正常范围内、 更换线圈 2、开阀时流体不能通过 原因分析：流体压力或工作压差不符合、流体粘度或温度不符合、阀芯与动铁芯周围混入杂垢杂质,阀前过滤器或导阀孔堵塞、使用时工作频率太高或寿命到期。 处理方法：调整压力或工作压差或更换适合的产品、更换适合的产品、对内部进行清洗,阀前必须安装过滤阀、及时清洗过滤器或导阀孔、改选产品型号或更换新产品。

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译文：
LPG is mandatory sealed special valve valve, so valve is closed, the disc must exert pressure to force the sealing surface does not leak. When the media entered the bottom of the valve flap valve 6:00, operating force required to overcome the resistance, is the stem and the packing of the friction and pressure from the media generated by the thrust, power off the valve to open the valve than the force, Therefore, larger stem diameter, otherwise the top curved stem failure occurred. Dedicated liquefied petroleum gas valve in addition to the above fault-prone, the usually have the following breakdown: 1, power is not action Analysis: Power cable connection is bad, supply voltage change is not permitted within the coil short circuit or burn out. Processing method: Connect the power cord, adjust the voltage in the normal range, replace the coil 2, open valve when the fluid can not Analysis: fluid pressure or pressure of work does not meet, fluid viscosity or temperature does not meet, moving core around the spool and miscellaneous dirt mixed with impurities, before the filter or valve guide valve hole plug, use the operating frequency is too high or the life maturity. Approach: to adjust or replace differential pressure or work for the product, the replacement for the product, the internal cleaning, the valve must be installed before the filter valve, timely cleaning filters or pilot valve hole, re-election model or replacement products.