1. Defect characteristics
Unfused refers to the phenomenon that the weld metal is not completely melted and bonded with the base metal or between the layers of the weld metal.
Failure to penetrate ...
Classification and working principle of valve limit switch
June 12th, 2023
TWS Valve from Tianjin, China
Key Words: Mechanical limit switch; Proximity limit switch
1. Mechanical limit switch
Usuall...
Choosing butterfly valves over any other type of control valves, such as ball valves, pinch valves, angle body valves, globe valves, angle seat piston valves, and angle body valves, has several be...
The check valve is an important control element used to prevent fluid backflow. It is usually installed at the outlet of the water pipe and effectively prevents the water from flowing back. There a...
(1) The valve does not operate.
The fault phenomenon and its causes are as follows:
1. No source of gas.① The air source is not open, ② due to the water content of the air source ice in winter, res...
Tianjin Tanggu Waters Valve Co., Ltd. Backflow Preventer: Uncompromising Protection for Your Systems
As a leading manufacturer in the valve industry, Tianjin Tanggu Waters Valve Co., Ltd. has been ...
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