Nov. 08, 2022
A resilient seat gate valve is also called a lift stem gate valve ( also called an open stem gate valve). Usually there are trapezoidal threads on the lift rod, and through the nut at the top of the valve and the guide groove on the valve body, the rotary motion is changed into linear motion, that is, the operating torque is changed into the operating thrust. When the valve is opened, the passage of fluid is completely open when the gate is lifted to a height equal to 1:1 times the valve's passage diameter, but this position cannot be monitored during operation. In actual use, the top point of the valve stem is used as the mark, i.e., the position of open immobility, as its fully open position.
Zero leakage design for the full life of the valve.
low maintenance requirements providing design flexibility.
There are two types of resilient seat valves: open stem resilient seat gate valves and concealed stem resilient seat gate valves. Usually there are trapezoidal threads on the lift rod, and through the nut in the middle of the gate plate and the guide groove on the valve body, the rotary motion is changed into a linear motion, i.e., the operating torque is converted into operating thrust. When the valve is opened, the fluid passage is completely open when the opening height of the gate is equal to 1:1 times the diameter of the valve, but the position cannot be monitored during operation.
Resilient seat valve is suitable for normal temperature (≤ 80 ℃) non-corrosive gas and liquid media. Such as clean water, air, oil, water treatment sewage and other pipelines. And has a very good sealing effect, almost zero leakage.
Hard seal gate valve is suitable for high temperature (≤425℃) with slightly corrosive gases and liquids. Such as steam, heat transfer oil, sewage, petroleum, chemical, metallurgy, pipelines. Can have a certain degree of wear resistance.
The difference between soft seal gate valve and hard seal gate valve is that the sealing performance of soft seal is better than hard seal, but the temperature resistance and wear resistance of hard seal gate valve is better than soft seal gate valve.