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1·At the same time, take a short trip valve flap design.

同时，采取短行程阀瓣的设计。

2·Suitable for various valve flap, flap ring panel seal grinding.

适用于各类阀门的阀座，阀瓣环形平面的密封研磨。

3·To extend the life of the valve flap can be coated with stellite.

为了延长使用寿命，阀瓣可以涂上一层钨铬钴合金。

4·Valve flap and valve seat for the soft seal, seal performance, no leakage.

阀瓣与阀座为软密封，密封性能好，无泄露。

5·But this time there is a stop block valve to prevent valve flap over top dead center and open.

而这时阀内有一个停止块来防止阀瓣超过上死点而打开。

6·Lift check valve with a spring load can withstand light valve flap, flap valve lift is not high.

升降式止回阀使用一个可承受弹簧载荷的轻量阀瓣，阀瓣的升程不高。

7·Valve flap can all be made of metal can also be embedded in the metal on leather, rubber, or synthetic coverage, depending on the use of performance requirements.

阀瓣可以全部用金属制成，也可以在金属上镶嵌皮革、橡胶、或者采用合成覆盖面，这取决于使用性能的要求。

8·Meanwhile, the flap valve can be used to adjust weight, spring tension and the bottom outlet valve flap valve opening size to determine the pressure and open and close time.

同时，可以利用调整阀瓣的自重、弹簧的弹力以及阀瓣的底孔大小来确定阀门的开启压力和启闭时间。

9·When the pressure difference changes with time, a phase shift will occur between the transient pressure difference and displace of valve flap, which could cause leakage and even reverse flow.

当阀片两侧的压差随时间变化时，阀片的启闭与压差的变化之间存在一定的相位差，有可能引起泄漏甚至反向流动。

10·Butterfly valve is closed parts (valve flap or disc for disc), around the valve axis of rotation to achieve the open and close a valve, in the pipeline mainly as shut off and throttling effect.

蝶阀是指关闭件(阀瓣或蝶板)为圆盘，围绕阀轴旋转来达到开启与关闭的一种阀，在管道上主要起切断和节流作用。