This product makes use of the advantages of the valve, such as high elasticity, high air permeability, medium resistance, weather resistance and radiation resistance, which can reduce the vibration and noise of the pipeline and compensate for the expansion and contraction caused by temperature changes. The valve materials used vary according to the media, including natural rubber, styrene butadiene rubber, butyl rubber, butyl rubber, EPDM, neoprene rubber, silicon valve, fluorine valve, etc. It has the functions of heat resistance, acid resistance, alkali resistance, corrosion resistance, abrasion resistance, oil resistance, etc. Valve fabric pneumatic valves are mainly fiber fabrics, valves, and other high-temperature resistant materials. It can compensate the vibration of fan and air duct operation and pipeline deformation. The fiber fabric expansion joint can compensate axial, transverse, angular and other products. It has the characteristics of no thrust, simplified support design, corrosion resistance, high temperature resistance, noise elimination and vibration reduction, and is especially suitable for hot air pipes and soot pipes in power plants.
Fiber fabrics and insulation cotton in non-metallic pneumatic valves have sound absorption and vibration isolation functions, which can effectively reduce the noise and vibration of boiler, fan and other systems.
Simple structure, light weight and convenient maintenance. Technical standards: products shall be marked in the following order: product code, type code, structure code, performance code, working pressure, nominal diameter. The product and structure codes are specified as follows: flexible electric ball valve RFJ, single ball valve D, double ball valve S, elbow W, concentric reducer Yt, eccentric reducer Yp, fan coil connector F. Mark example: RFJD-1.6 × 200,. It refers to a single spherical flexible electric ball valve with a nominal diameter of 200mm, and the working pressure is 1.6Mpa. Working pressure: the test pressure of the electric ball valve is 5 times of the working pressure, and the pressure is 3 times of the working pressure. Vacuum resistance: for electric ball valves with nominal inner diameter less than 300mm and working pressure more than 1.6Mpa, the vacuum resistance shall not be less than 100Kpa. For valves of other specifications, the vacuum of the forehead shall be specified by the agreement between the supplier and the demander. Safety evaluation of electric ball valve used in domestic drinking water system: safety of electric ball valve used in domestic drinking water system When the flat angle electric ball valve is used in domestic drinking water system, the water quality after passing the product shall comply with GB/T5749 Sanitary Standard for Drinking Water and GB/T17219 Safety Evaluation Standard for Drinking Water Transmission and Distribution Equipment and Protective Materials Relevant regulations and requirements.