It has the functions of heat resistance, acid resistance, alkali resistance, corrosion resistance, abrasion resistance, oil resistance, etc. First, it is very necessary to provide drawings, because the drawings are the embodiment of accurate manufacturing steps. If there is no common type of plate bearing, please pay attention to the conversion of units when calculating the length, width and height or the radius and height, pay attention to whether the displacement of basin bearing is fixed or movable, and remember not to drop the weight of anchor bolts when calculating.
First, the customer needs, whether the customer wants the national standard or the average. The production process varies with different demands and quotations. Whether the third party needs to be tested or not, many times there will be uncertainties as long as there is a third party involved in the test. If the customer wants to pass the test, he or she must pass the test through the relationship. Of course, we produce these bearings that are qualified in the factory test. 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.
Requirements for metal flange and flat union: metal flange shall meet the requirements of GB/T9119, and flat union shall meet the requirements of GB/T3289.37. Requirements when the end face of the electric ball valve is reinforced with steel wire rings: when the end face of the electric ball valve is reinforced with steel wire rings, the steel wire rings shall be round and located in the same plane in the same year. The difference between electric ball valve and electric ball valve: what is the difference between electric ball valve and electric ball valve? The two seem very similar, but their functions are 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. 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, wear resistance, oil resistance, etc. The electric ball valve plays an important role in the movement, thermal expansion absorption, vibration absorption of the pipeline system. The model length and connection mode of the electric ball valve are based on the user's requirements. Instructions for Lianyungang Valve Pneumatic Valve Fabric pneumatic valves are mainly made of high temperature resistant materials such as fiber fabrics, valves, etc. 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.