- Gray iron gate valve: including gray iron open stem gate valve and gray iron dark stem gate valve, such gate valves are suitable for municipal construction, water treatment, water supply and drainage, water conservancy projects and other fields.
- Ductile iron gate valve: usually soft-sealed gate valve, also divided into open rod and dark rod, this kind of gate valve is mainly used in sewage treatment, building fire protection, water supply and drainage engineering and other municipal engineering pipelines.
- Carbon steel and stainless steel gate valves: These two gate valves are mostly used in high temperature and high pressure pipelines, and the medium passing through is mostly steam, oil, etc., and the application fields include petroleum, chemical industry, metallurgy, etc.
- The above introductions are just a few common gate valves. In fact, there are not only the above gate valves, but also gate valves can be divided into many types according to their structural forms, different standards, connection methods, driving methods, etc.
- The above introductions are just a few common gate valves. In fact, there are not only the above gate valves, but also gate valves can be divided into many types according to their structural forms, different standards, connection methods, driving methods, etc.
- Dark stem gate valve: The stem nut is placed inside the valve body and is in direct contact with the medium, and is often fixed on the gate. Through the rotation of the valve stem, the valve stem nut drives the lubricating plate to move up and down to complete the opening and closing.
- Rising stem gate valve: The trapezoidal thread of the valve stem is placed outside the valve body and is located on the upper part of the valve stem. By rotating the valve stem nut, the valve stem drives the gate to rise and fall synchronously to realize the opening and closing of the valve, so it is easy to identify the valve. Open and close state to avoid misoperation.
- Flat gate valve: The sealing surface is parallel to the vertical center line, so the sealing surface of the valve body and the gate are also parallel to each other. The most common type of this valve is the double gate type.
- Wedge gate valve: the sealing surface is at a certain angle to the vertical centerline, that is, the gate valve with the two sealing surfaces forming a wedge shape.
national standard gate valve, American standard gate valve, German standard gate valve, Japanese standard gate valve.
According to the pressure level:
high pressure gate valve, medium pressure gate valve, low pressure gate valve.
According to the pressure level:
high pressure gate valve, medium pressure gate valve, low pressure gate valve.
According to the driving mode:
electric gate valve, pneumatic gate valve, manual gate valve.
