Views: 0 Author: J-VALVES Publish Time: 2024-04-23 Origin: Site
Performance characteristics of cast iron gate valve
The main material of cast iron gate valve is cast iron, and the cost is relatively low, which is suitable for large-scale procurement and wide use. Its price advantage makes it an ideal choice for medium and low pressure working conditions such as municipal water supply and drainage systems and fire protection systems.
Cast iron gate valves have certain corrosion resistance and can resist the erosion of common media such as atmosphere and water. Although its corrosion resistance is not as good as that of stainless steel, it performs well in water supply and drainage systems, especially when dealing with common water media.
The cast iron gate valve has good sealing performance. Generally, rubber sealing rings or copper sealing rings are used, which can effectively prevent medium leakage. Its sealing surface is reasonably designed and can adapt to frequent switching operations to ensure long-term stable operation.
(I) Working condition analysis
Before selection, it is necessary to clarify the specific working conditions of the water supply and drainage system, including medium type, working pressure, working temperature, etc. Cast iron gate valves are suitable for medium and low pressure and normal temperature working conditions. For media with strong corrosiveness or high temperature and high pressure working conditions, it is recommended to choose stainless steel or other high-performance materials.
Select the appropriate cast iron gate valve according to the nominal diameter of the pipeline system. The nominal diameter range of cast iron gate valves is relatively wide, covering from DN10 to DN1000.
Select the appropriate sealing material according to the sealing requirements of the system. For water supply and drainage systems, rubber sealing rings are a common choice. Their sealing performance is reliable and the cost is low.
The operation modes of cast iron gate valves are diverse, including manual, electric and pneumatic. In water supply and drainage systems, the manual operation mode is the most common because it is simple, economical and easy to maintain.
