... butterfly clack蝶形瓣,蝶形活门... ball clack球瓣 clack box瓣阀箱 ...
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... 球形，球状 ball shape 球形；球面 sphere 球形瓣 ball clack ...
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球形阀，球瓣
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ball clack valve 球瓣单向阀
Though there is no condensate water that uses ball-type sealed lever to make the valve clack tightly adhesion to the valve seat, it can prevent the fresh vapor from leakage.
由于阀座孔在凝结水水位以下，形成水封，水、汽自然分离，达到无蒸汽泄漏。
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