This electric ball valve uses a variety of synthetic valve materials to process and produce the product. The product has excellent reliability. Compared with metal connected pipe fittings, it can effectively cope with corrosion in various environments and internal corrosion of pipes. For the impact of the system, it systematically meets the use needs of various pipeline projects. The life of the Bidder of Nanjing Valve Electric Ball Valve Manufacturer is always full of ups and downs. It will not always rise like the rising sun, nor will it always suffer. Repeated ups and downs are just training for a person. Therefore, there is no need to be proud of those floating on the top; There is no need to be pessimistic about those who are at the bottom. We must be frank and modest, optimistic and move forward. Electric ball valve is also called valve electric ball valve, flexible electric ball valve, flexible electric ball valve, valve shock absorber, etc.
The product is mainly composed of tubular valve parts composed of inner and outer rubber layers, cord layers and steel wire rings, which are vulcanized at high temperature and high pressure and then combined with metal flange loose sleeves. It is widely used in fire protection, chemical industry, pump valve and other pipeline systems, playing the role of earthquake resistance and noise reduction, and absorbing the displacement generated during pipeline operation. Electric ball valve is a hollow valve product used for flexible connection between metal pipes. Electric ball valve is also called valve pipe electric ball valve, flexible electric ball valve, valve electric ball valve, flexible electric ball valve, high pressure electric ball valve, valve shock absorber, etc. It is a pipe joint with high elasticity, high air tightness, medium resistance and weather resistance. This product takes advantage of the elasticity, high air tightness, medium resistance, weather resistance and radiation resistance of the valve. It is made of polyester cord fabric with high strength and strong cold and hot stability, which is compounded diagonally with it, and then vulcanized by high-pressure and high-temperature molds.
It is widely used in various pipeline systems. Classified according to the external form: single ball electric ball valve, double ball electric ball valve, three ball electric ball valve, concentric reducing electric ball valve, eccentric reducing electric ball valve, clamp type electric ball valve, 90 ° valve elbow, etc. Classification according to the medium used: general (ordinary) electric ball valve, high temperature resistant electric ball valve, acid and alkali resistant electric ball valve, wear-resistant electric ball valve, desulfurization special electric ball valve, etc. Classification according to working pressure: 0.25Mpa, 0.6Mpa, 1.0Mpa, 1.6Mpa, 2.5Mpa, 4.0Mpa.
Sealing requirements: 1. When the upstream surface is a corrosive medium, the gap can be sealed with sealing materials. See the waterproof casing atlas for the practice; Installation drawing of flexible waterproof sleeve (Type A). 2. Filler materials of flexible waterproof casing: asphalt hemp fiber, polystyrene board, PVC foam plastic board. 3. Sealing paste: polysulfide sealing paste, polyurethane sealing paste. 4. The dimensional tolerance and geometric tolerance of welding structure shall comply with JB/T5000.3-1998. Manual arc welding is adopted for welding, and the welding rod model is E4303, and the brand is J422. The basic shape and size of weld groove shall comply with GB985-88. 5. When flexible waterproof casing is rolled, the allowable deviation of perimeter is D2 ≤ 600, D2>600 ± 0.0035D2. 6. The thickness of the concrete wall where the wall passes through shall not be less than 300, otherwise the wall shall be thickened on one side or both sides, and the diameter of the thickened part shall be at least D5+200. 7. The weight of flexible waterproof casing shall be calculated with L=300. If the wall thickness is greater than 300, it shall be calculated separately. 8. If a non concrete wall is encountered at the place where the flexible waterproof casing penetrates the wall, the concrete wall shall be used locally, and the pouring range shall be 200 larger than the wing ring diameter (D5). Moreover, the casing must be poured at one time on the inner wall to integrate the mechanical scalability of the metal expansion device and the multiple displacement functions of the flexible electric ball valve, which can not only freely expand and contract during installation, disassembly and maintenance, It can also compensate for the linear expansion and contraction of the pipeline due to temperature changes during operation, as well as the angular displacement caused by different centrality of the pipeline due to foundation settlement and other reasons. At the same time, it can also transmit vibration and noise. It is a multi-functional pipeline pneumatic valve.
Electric ball valve can also be called flexible electric ball valve, electric ball valve, electric ball valve, flexible electric ball valve, valve expansion joint, electric ball valve, shock absorber, etc. It is a pipe connector with high elasticity, high air tightness, medium resistance and weather resistance. The electric ball valve is generally composed of an inner rubber layer, a fabric reinforcement layer (the reinforcement layer has multiple layers of rubber scraped nylon cord fabric), a middle rubber layer, an outer rubber layer, an end reinforced metal ring or a steel ring, which is formed by vulcanization at high temperature and pressure, and loosely combined with a metal flange or a parallel joint.