译文：
①阀门开启（排污过程） a.逆时针转动手轮阀杆带动阀芯逐渐上移，密封面脱开，阀芯上的导流座逐渐移出阀座内孔，形成窄缝间隙，介质通过阀座上的对称节流孔进入阀座内部，少量介质可通过窄缝流出，逐渐降低系统压力。 b.继续逆时针转动手轮，阀芯向上运动，导流座上的节流孔移出阀座内腔，较多的介质通过导流座和阀套节流后顺利排出。 c.继续逆时针转动手轮，阀芯向上移至全开位置，此时，介质压力大大降低，大量杂质可直接从阀套节流孔处排出，并在倒置的密封座处形成涡流，不断清洁密封面，防止杂质粘附在密封面上。 ②阀门关闭过程： a.顺时针转动阀门，阀杆带动阀芯下移，此时排污已结束，系统压力较低，阀套上的节流孔面积逐渐减小，导向套靠近阀座，并改变介质流向，介质经节流后以一定速度通过阀芯和阀做密封面，逐渐加强对密封面的清洁力度。 b.继续转动手轮，阀芯上的导流座进入阀座内孔，形成窄缝节流，由于排污接近结束，介质中杂质已经较少，导向套和阀座间的窄缝阻止了残存的微小杂质流入密封面，介质通过窄缝快速流出，彻底清扫密封面，保证密封副接触时达到零泄漏。 c.继续转动手轮，阀芯和密封座接触。实现密封。
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原文：
Sewage valve works ① Open the valve (Sewage process) a. handwheel counterclockwise drive spool stem gradually upward, sealing face was torn off and diversion on the spool blocks the hole gradually out of the valve seat to form a slit-gap symmetry on the Forged Gate, Globe, Check Valvesmedia through the throttle valve seat hole into the seat inside, a small amount of media flow through the slit, and gradually reduce the system pressure. b. continue to handwheel counterclockwise, spool upward movement, diversion pedestal out of the throttle valve seat city, more of the media through the diversion valve seat and a smooth dischargeForged Steel Bolted Bonnet Gate Valvethrottling sleeve. c. continue to handwheel counterclockwise, move up to full-spool location, time, medium pressure greatly reduced, a large number of impurities can be set directly from the valve orifice at discharge, and the inverted sealing seat at the formation of eddy current, and constantly Clean sealing suce to prevent adhesion of impurities in the sealed suce. ② valve closure process: a. clockwise rotating valve stem drive spool down, this time the sewage has ended, the system pressure lowerea of the throttle valve puts on, gradually reducing the guide sleeve close to the seat, and change the media flow medium afte certain speed by the throttle valve core and valve to do through the sealing suce, and gradually strengthen the sealing suce of the Forged Steel Welded Bonnet Gate Valvecleaning efforts. b. continue to handwheel, valve core seat on the diversion into the valve seat hole, the formation of slit cut costs, but because of the sewage near the end, the medium has fewer impurities, orientation kits and slit between the valve seat to prevent the residual impurities into the sealing suce of the small, medium fast flow through the slit, thoroughly cleaning the sealing suce to ensure that the Deputy contact seal zero leakage. c. continue to handwheel, valve core and sealing contact with seat. To achieve sealing.
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