The quality of stainless steel Check Valve is related to many factors, but because many people do not judge, it is easy to cause people to buy inferior products. So how should the quality of stainless steel exhaust valves be judged?

1. Opening and closing speed
　　 The opening and closing speed is expressed by the time required for the valve to complete an opening or closing action. Generally, there are no strict requirements on the opening and closing speed of the valve, but some working conditions have special requirements for the opening and closing speed. If some require rapid opening or closing to prevent accidents, some require slow closing to prevent water hammer, etc. This should be considered when selecting the valve type.

2. Action sensitivity and reliability
　　 This refers to the sensitivity of the valve to respond to changes in media parameters. For valves with specific functions such as throttle valves, pressure reducing valves, and regulating valves, as well as valves with specific functions such as safety valves and traps, their functional sensitivity and reliability are very important technical performance indicators.

3. Service life
　　 It indicates the durability of the exhaust valve, which is an important performance index of the valve and has great economic significance. It is usually expressed in terms of the number of openings and closings that can guarantee the sealing requirements, and it can also be expressed in terms of use time.