Ningxia clamp type electric ball valve has a 10-year warranty on the importance of expansion joints in pipeline installation. Because the temperature of expansion joints connecting expansion pipes or bellows changes greatly, the use of expansion joints is a protective measure. Expansion joints are new products connecting pumps, valves, pipelines and other equipment with pipelines. They are connected by full bolts to make them become a whole, There is a certain displacement, which is convenient for installation. It can bear the axial pressure of pipeline. In this way, during installation and maintenance, it can be adjusted according to the on-site installation size. During operation, it not only improves the work efficiency, but also plays a certain role in protecting pipeline equipment such as pumps and valves.
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. Precautions for installation of electric ball valve:
1. The installation length of the electric ball valve is calculated on the outside of the sealing surface of the valves at both ends of the ball, and the products are not divided into flow directions;
2. It is forbidden to conduct hydraulic test when the connecting bolts of each part are not fastened;
3. It is forbidden to open the connecting bolt between the electric ball valve and the pipeline during the water pressure test and operation stages;
4. It is prohibited to pre stretch the installation beyond the natural length of the electric ball valve;
5. The pipeline must be provided with fixed support or fixed bracket, and the force of the fixed bracket must be greater than the axial force. During vertical installation and overhead installation, corresponding fixed supports and forced supports shall be installed at both ends of the product to prevent pulling off under working pressure. What is the difference between electric ball valve and electric ball valve? 1: The two seem very similar, but their functions are quite different.
Stainless steel metal hose, also known as metal hose, electric ball valve and stainless steel hose, has good flexibility, temperature resistance, pressure resistance and corrosion resistance, and is suitable for transmission of steam, water, oil and various industrial gases and other media. 2 The electric ball valve ball is composed of a valve pipe with multiple layers of rubber scraped nylon cord fabric and outer rubber layer in the inner rubber layer and reinforcement layer. 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. The electric ball valve plays an important role in the movement, thermal expansion absorption and vibration absorption of the pipeline system. The model length and connection mode of the electric ball valve shall be in accordance with the user's requirements. The unvulcanized valve is of little use value in use, but the degree of sulfur deficiency vulcanization is not enough? The valve performance will decline if the vulcanization time is not enough to reach a good state, and if the over sulfur vulcanization time exceeds, the performance will decline significantly. According to the connection mode, it can be divided into three types: loose flange type, fixed flange type and threaded type; According to the structure, it can be divided into single sphere, double sphere, curved sphere, etc. The tubular valve part is composed of inner and outer rubber, cord fabric and steel ring, which is formed by vulcanization and then loosely combined with metal flange or parallel joint. This product can reduce vibration and noise, and can compensate for thermal expansion and cold contraction caused by temperature changes. It is widely used in various pipeline systems.