⑥The structure length is relatively short. Because gate valves have many advantages, they are used in a wide range of applications. Generally, gate valves are used as devices for cutting off the medium in pipelines with a diameter of Greater than or equal to DN50. Even on some small-diameter pipelines (such as DN15~DN40), some gate valves are still retained.
For a long time, the general gate valves used in the market are commonly leaking and prone to rust. Our company introduces foreign technology to produce soft-sealing gate valves. It overcomes the shortcomings of ordinary gate valves such as poor sealing, elastic fatigue, and easy rusting. The soft seal gate valve is a replacement product of the traditional gate valve. It uses the elastic gate plate to compensate for slight deformation to achieve a good sealing effect. The valve has significant advantages such as light switching, reliable sealing, good elastic memory and long service life. It can be widely used It is used as a regulating and intercepting pouring device in fluid pipelines such as tap water, sewage, construction, food, electricity, medicine, metallurgy, textiles, and energy systems.
Connection end forms: raised face flange, full plane flange, ring connection flange, butt weld end connection, threaded connection, socket weld connection and combined connection, etc., and can also be customized according to customer requirements. The weld ends are manufactured in accordance with ASME B16.25 and require the user to provide the wall thickness of the pipe.
Self-sealing valve bonnet
The valve is designed, manufactured and tested to achieve low leakage of 50PPMVOC as a standard. This article applies to all cast steel and forged steel gate valves, except for special requirements of the user. By increasing the valve stem diameter tolerance and strictly controlling the straightness of the valve stem and the smoothness of the packing surface, we ensure long-term low leakage of the valve stem.
Valve stem packing form with butterfly spring compression. This form is mainly used in places where the valve often requires switching or under higher temperature and pressure changes to reduce frequent adjustments to the packing gland to compensate for packing consumption. Dynamic load packing gland The design provides continuous compression of the packing to ensure good sealing performance in long-term and changing operating environments. Different filler types and materials can be provided according to customer requirements.
The packing is designed as a water-sealed structure, and water with a pressure of 0.6-1.6 MPa is introduced into the interface. The friction is small and the sealing is good. It can isolate the system from the atmosphere and ensure good air tightness.
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