The importance of valve selection: The selection of control valve structures is determined by comprehensively considering factors such as the medium used, temperature, upstream and downstream press...
I. Pre-installation Preparation
1. Check the valve specification model, pressure level, and flow direction identification to ensure that it meets the design requirements.
2. Check th...
1. Hydrstatic test at negative temperature during construction in winter.
Consequences: because the tube freezes quickly during the hydraulic test, the tube is frozen.
Measures: try to carry out hy...
When controlling and regulating the flow of liquids and gases, the type of valve used plays a vital role in ensuring efficient operation. Two commonly used gate valve types are non-rising stem gate...
(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...
Butterfly valve is widely used in urban construction, petrochemical, metallurgy, electric power and other industries in the medium pipeline to do cut off or adjust the flow of the best device. Butt...