Remove check valve and valve seal from booster.

从倍力器上卸去逆止阀和阀门密封.

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The movements of check valve located at Valve valve seal on the Butterfly valve seat surface.

升降式止回阀的阀瓣座落位于阀体上阀座密封面上.

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A butterfly valve seal and metal shells of the two sealed sealed type.

蝶阀有弹密封和金属的密封两种密封型式.

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