Installation and use of ball valves

1. Indoor devices or outdoor applications with protective measures;
2. Outdoor outdoor equipment, with erosion from wind, sand, rain, sunlight, etc;
3. It has a flammable, explosive gas or dust environment;
4. Environment in humid and dry tropical regions;
5. The temperature of the pipeline medium can reach over 450 ℃;
6. The ambient temperature is below -20 ℃;
7. Easily submerged or submerged in water;
8. Environments with radioactive substances (nuclear power plants and radioactive substance testing devices);
9. Environment on ships or docks (with salt mist, mold, moisture);
10. Situations with severe vibration; Places prone to fire;