Qingdao Fluido Industrial Co.,Ltd

Gate valve is a commonly used valve, which has the advantages of small fluid resistance, fast opening and closing speed, good sealing performance, long service life, wide range of application. However, when selecting the gate valve, the following aspects need to be noted to ensure that it can meet the actual needs and work safely and reliably.

1. Material selection

Gate valve parts have a variety of different materials, including carbon steel, stainless steel, aluminum alloy, copper alloy and so on. When selecting materials, it is necessary to choose the right material according to the corrosion, temperature, pressure and flow rate of the medium. For example, for more corrosive media, you can choose stainless steel or materials with strong corrosion resistance; for high temperature and high pressure media, you need to choose materials with good high temperature performance and strength performance.

2. Structural and form selection

There are many structural forms of gate valve, including open rod type and dark rod type. The open rod gate valve can adjust the opening height of the valve through the nut or bracket on the stem, while the dark rod gate valve needs to be adjusted by rotating the hand wheel. When choosing the structure form, you need to choose according to the actual needs. For example, if you need to adjust the opening height, you can choose the open bar; if you need a compact structure, you can choose the dark bar.

3. Material selection of the sealing surface

The sealing surface of the gate valve is one of the important parts of the valve, and its material performance directly affects the sealing performance and service life of the valve. When selecting the sealing surface material, we need to choose according to the corrosion of the medium and the working temperature. Commonly used sealing surface materials include rubber, PTFE, stainless steel and so on. For highly corrosive media, select materials with strong corrosion resistance, such as stainless steel o