你能把截止阀和闸阀放在一起吗?
2021-08-11
答案绝对是否定的!在结构上,如果空间有限,闸阀依靠介质压力将其表面紧密密封,从而达到无泄漏的效果。启闭时,阀瓣与阀座密封面总是相互接触和摩擦,导致密封面磨损。当闸阀即将关闭时,管路前后压差很大,这也使得密封面损坏更加严重。闸阀的结构比截止阀复杂。在口径相同的情况下,闸阀的形状要比截止阀高、窄。另外,闸阀的阀杆分为上升和不上升两种,截止阀的阀杆不分为上升和不上升两种。工作原理截止阀开启和关闭时阀杆是上升的,这意味着当手轮转动时,手轮随着阀杆上下移动。对于闸阀,手轮转动,阀杆上下移动,但手轮本身保持在同一位置。它们的流量是不同的。 Gate valves have to be full opened or closed, while globe valves do not. Globe valves have a defined inlet and outlet direction, while gate valves do not. In addition, the gate valve has only two states: fully open or fully closed,and the long travel of the disc results in a longer switching time.The time a globe vale needs is muchshorter. Most importantly, thedisc of the globe valve can stop at a certain place inthe valve body to do flow regulation. The gate valve can only be used for cut-off and has nosuch function. Performance differences Globe valves can be used for both cut-off and flow regulation. The fluid resistance of globe valve is relatively high, and it takes more effort to open and close, but because the distance between the valve plate and the sealing surface is short, the opening and closing stroke is short. When gate valve is fully open, the medium flow resistance in the valve body channel is almost 0, so the gate valve opening and closingwon’t be very laborious. But the gate plate is far from the sealing surface, opening and closing time is longer. Xiamen Dervos is an API Certified check valve manufacturing and trading company that specializes in the production of various kinds of valve. In addition to all kinds of common valves such as gate valves, globe valves, plug valves and butterfly valve , we also produce otherunconventional valves as long as our customers file their requirements.To learn more about our industry-leading products, contact us today.