What material is better for the V-shaped ball valve that walks steam?
One, .Cast Iron: Although the material cost of cast iron V-type ball valve is low, its strength, toughness and hardness are relatively low, and it is generally suitable for low-pressure and normal temperature occasions.
2.Cast steel: Cast steel V-type ball valve has high strength and hardness, and is suitable for high temperature and high pressure occasions.
Second, the selection elements of steam valves.
1..Heat resistance.
Steam V-ball valves need to withstand high temperatures and high pressures, so the heat resistance of the material is the first factor to consider when choosing a valve material.
2.Corrosion resistance.
During the vapor transfer process, the chemical composition in the water or gas can cause corrosion to the valve material, and the use of materials with good corrosion resistance can extend the life of the valve.
3.Sealing performance.
Steam V-type ball valves need to have good sealing properties to ensure the safety and reliability of steam transmission, and their sealing performance should be paid attention to when selecting materials.
4.hardness and abrasion resistance.
Steam V-type ball valve will inevitably rub with other mechanical parts during the working process, and its hardness and wear resistance need to be considered when selecting the material to ensure that the valve can operate stably for a long time.
Third, in short, although the cast iron material has good heat resistance and pressure resistance, its corrosion resistance and sealing are relatively unstable, due to the relatively low strength, toughness and hardness of the cast iron material, cracking may occur at low temperatures. Therefore, for steam V-type ball valves, we generally use V-shaped ball valves made of cast steel.