Forged steel gate valve is widely used in pipelines, which connects and cuts off the medium. It is not good for regulating the flow of the medium, but we can know the flow rate according to the height of its stem(for example, RVHX is used for firefighting and has a scale for opening and closing). Compared with other valves, forged steel gate valve has a wider range of application based on pressure, temperature and diameter.
A Brief Analysis of Classification and Advantage of Forged Steel Gate Valves
Forged steel gate valve can be classified into wedge single disc gate valve, flexible gate valve, dual plate gate valve and parallel disc gate valve on the basis of different internal structures.
The main performance advantages of
forged steel gate valves
1. The fluid resistance of forged steel gate valve is small, its stem has through type, so the flow does not change direction.
2. Forged steel gate valve's sealing performance is better than that of globe valve, its opening and closing is relatively effortless than globe valve.
3. Forged steel gate valve has a wide range of application, besides mediums like steam and oil products, it can also be used for granular solid, medium with larger viscosity, emptying valve, low pressure vacuum valve.
4. Forged steel gate
valves are valves with double flows, so they are not restricted to flow directions. In that way, they are suitable for mediums that may change the flow direction of the pipeline. And they are easy to install.
Performance comparison of several forged steel gate valves with different structures:
(1) Wedge single disc forged steel gate valve
A. The structure of forged steel gate valve is simpler than that of flexible gate valve.
B. At higher temperature, forged steel gate valve's sealing performance is worse than that of flexible gate valve or dual gate valve.
C. Forged steel gate valve is good for easy coking high temperature mediums.
(2) Flexible forged steel gate valves
A. Forged steel gate valve is a special form of wedge single gate valve. Compared with wedge gate valve, sealing performance of forged steel gate valve is good at high temperature, and the disc is not easy to be stuck after heating.
B. Forged steel gate valve is suitable for mediums like steam, high temperature oil, oil and gas; and good for frequent switching parts.
C. Forged steel gate valve is not suitable for easy coking medium.
