The stop valve is a common pipe connection device in many of our industrial facilities. It controls the speed of the fluid in our pipes, allowing it to be well isolated from the outside world, creating a very tight seal for it. environment. The media used in different productions are different, which requires us to correspond to different types of stop valves. Of course, the characteristics of these products are also different. This article will give you a brief introduction!
What types of stop valves are there
1. Water-sealed stop valve
The main working medium of the water-sealed stop valve is water vapor, oil and non-corrosive It is used as an opening and closing device on the gas pipeline. It is especially suitable for steam turbine vacuum condensation systems in thermal power plants. There are two types of valves: stop valves and gate valves. Applicable to nominal pressure ≤10MPa, working temperature ≤400℃ or ≤550℃. The packing chamber of the valve cover has a water circulation sealing structure. When water is introduced into the interface with a pressure of 1.6~10MPa. It can isolate the system from the atmosphere and ensure the system has good air tightness. When used for opening and closing on the pipeline, it must be in a fully open or fully closed state and must not be used to regulate flow.
2. Antibiotic stop valve
Antibiotic stop valve is a special type of stop valve. It has strong sterilization and detoxification functions to prevent products from being contaminated by bacteria. Mainly used in biological fermentation, medical and beer fermentation, amino acid fermentation, bioagricultural fermentation, biofertilizer fermentation, various antibiotic fermentation, biological, biochemical, chemical materials, water, steam, cold control and other fields. The bottom can be customized according to customer requirements. It is necessary to open a drainage hole, with high temperature resistance and long service life, and no dead ends to achieve zero leakage level.
3. Throttle stop valve
Throttle stop valve is a valve type whose design and manufacturing standards are in accordance with GB/T12235. It is suitable for opening and closing and regulating flow on pipelines with nominal pressure PN16~PN40 and working temperature -20~350℃ in various working conditions such as petroleum, chemical industry, manufacturing, fertilizer and electric power industries. Double gates are used for bidirectional elastic sealing, opening and closing are flexible, rapid and reliable; the valve stem and the valve disc of the vacuum isolation stop valve are dynamically connected, and the valve disc and valve seat are vertically seated; the opening and closing stroke and valve height are small.