Yuhuan Xianyi Pipe Industry Co., Ltd.
News
12
2021
-
11
Gate valve installation and use
Author:
1. gate valve is a block valve, the sealing performance is not as good as the stop valve. The main "duty" of the gate valve is to "cut off the flow", as well as to a small resistance: "freewheeling". It should not be used to adjust the flow and pressure of the medium, such as long-term adjustment, the sealing surface is easy to be washed and worn by the medium, affecting the sealing performance. The temperature and pressure of the medium of the gate valve should be paid attention to the reliability of the use. At high temperature and high pressure, the gate may die due to temperature changes, and the non-sealing phenomenon is easy to occur due to uneven temperature of the medium. Wedge type but the gate valve is particularly obvious.
2. gate valve can be installed in horizontal pipeline or vertical pipeline, single and double gate valve should be installed in the horizontal pipeline, and the hand wheel should be located above the valve, not allowed to install downward. Gate valve medium flow direction is not limited. Gate valves are usually flanged, and welded connections are also useful for special occasions.
3. for large diameter and high pressure gate valve, opening and closing torque is larger. In order to reduce the opening and closing torque, the bypass valve can be installed. The bypass valve is installed outside the main gate valve, and its inlet and outlet are connected to the two sides of the main gate valve and connected in parallel. The bypass valve should be opened before the main gate valve is opened. After entering the valve, the pressure difference before and after the main gate valve gate is reduced, thereby reducing the opening torque of the main gate valve. The selection of bypass valve caliber should be considered according to the main valve caliber and use requirements.
News
How to install electric gate valve?
2023-01-31
Address: Lupu Industrial Zone, Yuhuan City, Zhejiang Province
Telephone (Tel):+86-576-87212981
Fax (Fax): +86-576-87212981
E-mail:1275860949@qq.com