Among numerous valve products, gate valves and butterfly valves are commonly used valve models. However, many users do not know the difference between gate valves and butterfly valves when selecting, and therefore do not know how to choose these two types of valves. Regarding this issue, Liangzan Valve will introduce the difference between gate valves and butterfly valves to facilitate better selection for users.

Gate valve is a common type of opening and closing valve that uses a gate (or opening and closing element, where the opening and closing element is called a gate or gate, and the gate seat is called a gate seat) to connect (fully open) or cut off (fully close) the medium in the pipeline. It is not allowed to be used for interception, and it should be avoided to slightly open the gate during use, as the erosion of high-speed flowing media will accelerate the damage of the sealing surface. The gate valve is called a gate valve because it operates as a lifting motion on one side perpendicular to the centerline of the gate seat channel, cutting off the medium in the pipeline like a gate valve.

Butterfly valve refers to a type of valve in which the closing element (valve disc or butterfly plate) is a disc that rotates around the valve axis to achieve opening and closing. It is mainly used for cutting off and throttling in pipelines. The butterfly valve opening and closing component is a disc-shaped butterfly plate that rotates around its own axis inside the valve body to achieve the purpose of opening, closing, or adjusting. The fully open and fully closed butterfly valve is usually less than 90 °, and the butterfly valve and stem themselves do not have self-locking ability. In order to position the butterfly plate, a worm gear reducer should be installed on the stem. By using a worm gear reducer, not only can the butterfly plate have self-locking ability to stop at any position, but it can also improve the operational performance of the valve.