The manual butterfly valve is an indispensable key component in the fluid control system. The choice of its seat sealing form is directly related to the overall performance and service life of the valve. Among many sealing materials, rubber seals are widely used in the design and manufacturing of manual butterfly valves because of their unique performance advantages.
Excellent sealing performance
Due to its excellent elasticity and plasticity, the rubber sealing material can closely fit the sealing surface of the valve seat to form a reliable sealing effect. In the design of manual butterfly valves, rubber sealing rings are usually installed around the butterfly plate. When the butterfly plate rotates to the closed position, the rubber sealing ring elastically deforms under the action of pressure, filling the tiny gap between the valve seat and the butterfly plate to ensure that the fluid does not leak. This sealing method is particularly suitable for the control of low-pressure and normal-temperature fluids, significantly improving the safety and reliability of the system.
Excellent corrosion resistance
Rubber materials have excellent corrosion resistance and can effectively resist the erosion of various chemical media. In the application of manual butterfly valves, rubber sealing rings are usually made of materials with excellent corrosion resistance, such as nitrile rubber (NBR), ethylene propylene rubber (EPDM) and chlorosulfonated polyethylene (CSM). These materials can resist corrosive media such as acids, alkalis, and salts, ensuring the stable operation of the valve under harsh working conditions. The corrosion resistance of the rubber seal not only extends the service life of the valve, but also reduces the frequency of maintenance and replacement, thereby reducing operating costs.
Excellent wear and aging resistance
The wear resistance and aging resistance of rubber materials enable it to maintain stable performance during long-term use. In the practical application of manual butterfly valves, rubber sealing rings often face erosion and friction from fluids, but due to their excellent wear resistance, these sealing rings can maintain the sealing effect for a long time. In addition, the rubber sealing ring also has certain aging resistance and can maintain stable working conditions in harsh environments such as high temperature, low temperature and ultraviolet rays, thereby further extending the service life of the valve.
Strong adaptability
Rubber sealing materials are extremely adaptable and can meet the needs of valve seat sealing surfaces of different shapes and sizes. In the design process of manual butterfly valves, the rubber sealing ring can be customized according to the specific shape and size of the valve seat sealing surface to ensure the reliability of the sealing effect. At the same time, the elasticity of the rubber sealing ring enables it to effectively compensate for the tiny gap between the valve seat and the butterfly plate, thereby further improving the sealing performance.
Skype : lmzhbb