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When a sudden power failure or accident or normal pump stops when the pump stops, the valve inlet water velocity to reduce stress Agency, the valve plate also fall, when its velocity is zero (that is, inlet flow rate is zero Department), large valve plate because of its own gravity and rapidly turn off (time 3s ~ 5s), the majority of water to prevent backflow, when the valve before and after the formation of a water pressure, water stress, on the one hand through the small valve at the bottom of the three slot for pressure relief vent pressure. 4 water stress from the bypass tube into the cavity patch up the control room (this process for the suction pressure chamber that can effectively absorb the energy of water), when water stress on cavity than inferior vena cava, the pressure of water promote the diaphragm down mobile , the current cavity pressure of water being squeezed out all the small valve plate slowly drop back to standby status, the process time to ease closure adjustable (3s ~ 150s), then the valve has been fully closed, watertight.

當(dāng)突然停電或事故停泵或正常停泵時(shí)男人强奸裸体老女人视频，閥門進(jìn)水口處壓力水流速降低，大閥板也隨之下降亚洲欧美国产丝袜一区，當(dāng)其流速為零時(shí)亚洲第一色色色，大閥板由于自身重力而迅速關(guān)閉（時(shí)間3s～5s），可防止大部分水倒流欧美色一区二区，此時(shí)閥門前后形成一種水壓差黄网站A片免费，壓力水一方面通過小閥板底部的三條泄壓槽進(jìn)行泄壓。4）壓力水從旁通管進(jìn)入膜片控制室上腔（此過程為吸壓腔久操免费在线观看，能有效吸收一部分水能量）黄页观看免费在线，當(dāng)上腔壓力水大于下腔時(shí)，壓力水推動(dòng)膜片往下移動(dòng)AA片免费看，當(dāng)下腔壓力水全部被擠出來時(shí)大伊人久久，小閥板緩緩下降，恢復(fù)到待機(jī)狀態(tài)另类性交在线，此過程中緩閉時(shí)間可調(diào)節(jié)（3s～150s）a大乳日韩人妻无码网站，屆時(shí)閥板已全部關(guān)閉，滴水不漏精品国产一区二区不卡。

Chain lockers to be provided with drain well of sufficient capacity, covered by perforated, removable and galvanised steel plate.

錨鏈艙中應(yīng)布置有具有足夠容量的泄水阱欧美一区黄片，阱的頂部裝有鍍鋅鋼板制成的可拆型多孔板。

Down sliding track using Step-down design, no drainaging board, draining water smooth , waterproof performance better.

階梯式下滑欧美三级一级69，無檔水板Wwwav日韩黄色毛片，排水泄水順暢無阻，加高檔水設(shè)計(jì)国产国爽视频，防水性能更佳亚洲av成人一区二区三区观看。