What are the characteristics and uses of the resilient seated gate valve?
Features of resilient seated gate valve
1. Flat-bottomed valve seat, no dirt accumulation, making the seal more reliable.
2. The gate is entirely covered with nitrile rubber, and the internal parts of the valve are made of corrosion-resistant and rust-resistant steel and copper alloy materials, which can be used in sewage systems to adapt to harsh working environments
3. Small size, light weight, easy to install and maintain.
4. The valve stem is sealed with three O-rings, which greatly reduces the frictional resistance when switching, and the switch is light and water-proof.
When the resilient seated gate valve is closed, the sealing surface can only rely on the medium pressure to seal, that is, only rely on the medium pressure to press the sealing surface of the gate to the valve seat on the other side to ensure the sealing of the sealing surface, which is self-sealing. Most gate valves adopt forced sealing, that is, when the gate valve is closed, the gate must be forced against the seat by external force to ensure the sealing performance of the sealing surface.
When the gate valve is opened, when the lift height of the gate is equal to 1:1 times the diameter of the gate valve, the fluid passage is completely unblocked, but this position cannot be monitored during operation. In actual use, the apex of the valve stem is used as a mark, that is, the position where it cannot be opened, as its fully open position. In order to consider the lock-up phenomenon caused by temperature changes, it is usually opened to the top position, and then back 1/2-1 circle, as the position of the fully open gate valve. Therefore, the fully open position of the gate valve is determined by the position of the gate (that is, stroke). The sealing surface is easy to wear and affects the service life. When opening and closing, the two sealing surfaces of the gate and the valve seat rub against each other, and the medium pressure is required. It is easy to cause abrasion and abrasion, which will affect the sealing performance and shorten the service life.
The general gate valves used in the market for a long time generally have water leakage or rust, which overcomes the defects of general gate valves such as poor sealing and rust. The resilient seated gate valve uses the compensation effect of the elastic gate plate to produce a small amount of elastic deformation to achieve a good sealing effect. It has the obvious advantages of light switch, reliable sealing, good elastic memory and service life. It can be widely used as a regulating and intercepting device on the pipelines of tap water, sewage, construction, petroleum, chemical industry, food, medicine, textile, electric power, shipbuilding, metallurgy, energy system, etc.
Botou Yaxing Fluid Equipment Co.,ltd specialize in designing and manufacturing various kinds of high quality valves,such as: Gate valve,Butterfly valve,Check valve,Strainer,Hudraulic control valve(float valve,pressure reducing valve,pressure relief valve, flow control valve) ,HVAC balancing valve,Air release valve,Rubber flexible joint and Stainless steel flexible joint,Pipe fittings(unicersal coupling, flange adaptor, repair clamp, saddle...) etc, which used in water supply and sewage system， fire fighting system, and heating ventilation air conditioning system.
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