R512 type High performance concentric butterfly valvesadvanced foreign technology on the basis of soft contact seat sealing structure multiple can effectively prevent leakage.
They are designed to provide a secondary seal in the event the cylinder valve develops leakage through the valve seat.
它们是设计用来在钢瓶阀门通过阀座产生泄漏的情况下提供一个二次密封。
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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.