Shanghai Taichen Valve is mainly for the sales of pneumatic valves, and strives to be the best valve manufacturer. It has many years of manufacturing experience in the production of valves, has first-class product quality assurance, and has the guarantee of product service quality, let you buy Comfortable and assured. Pipe Extrusion Black Masterbatch are mainly used for pipe production. This grade masterbatch has good dispersion, high melting flow index, basicaly no calcium carbonate filler. Its carbon black conents is from 10% to 50%. Pipe extrustion Black Masterbatches are colomn shape pellets, diameter 2.5mm and height 3-4mm. Pipe Extrusion Black Masterbatch Pipe Masterbatch,PE Masterbatch,Plastic Additives Masterbatch,Pipe Extrusion Black Masterbatch Anda Masterbatch( Group) Co., Limited , https://www.polymer-masterbatch.com
Pneumatic valve selection knowledge
Shanghai Taichen Valve is mainly for the sales of pneumatic valves, and strives to be the best valve manufacturer. It has many years of manufacturing experience in the production of valves, has first-class product quality assurance, and has the guarantee of product service quality, let you buy Comfortable and assured.
Today, we introduce the overall quality and performance of the valve from the sealing performance of the pneumatic valve and the knowledge of the valve selection, so that the customer can understand the pneumatic valve in detail and have a metal-to-metal seal on the sealing of the valve. There are also non-metallic seals and soft seals. Different sealing forms can be selected in various environments, and the biggest difference between hard and soft seals is the compatibility of sealing and temperature. The sealing performance of metal is not very good and can be applied to very high temperature, soft seal. The performance is very good, can reach 0 leakage, and the performance of the metal seal is obviously not good at the applicable temperature, and it is selected according to its own use when the customer chooses.
The valve sealing material mainly has 4, synthetic rubber, nylon, PTFE, cast iron. Synthetic rubber is superior to natural rubber in oil resistance, temperature resistance and corrosion resistance. It has a temperature t≤150°C and natural rubber t≤60°C. It is commonly used on pneumatic valves, gate valves and check valves. Nylon has The friction coefficient is small, the corrosion resistance is good, the temperature is t≤90°C, the nominal pressure PN≤32MPa is generally used on the ball valve, and the polytetrafluoroethylene is mostly used in the pneumatic valve with the temperature t≤232°C and the nominal pressure PN≤6.4MPa. Valves such as ball valves are widely used. Cast iron is used for gate valves, globe valves and plug valves for gas t ≤ 100 ° C, nominal pressure PN ≤ 1.6 MPa, gas and oil.
The pneumatic valve is selected to be analyzed according to the customer's own conditions and other conditions. The following Palloff pneumatic valve proposes electromechanical "target=_blank> electromechanical advice on the selection.
1. Pneumatic valves should be used on the pipeline or device of high temperature and high pressure medium.
2. Small valves can be used with needle valves, instrument valves, sampling valves, pressure gauge valves, etc.
3, there are flow regulation or pressure regulation, but the adjustment accuracy is not high, and the pipeline diameter is relatively small, such as the nominal diameter of ≤ 50mm pipeline, should be used.
4. In the water supply and heating projects in urban construction, it is known to pass through smaller pipelines, and the cut-off, balance valve or plunger valve can be used.
5. On the pipeline where the flow resistance is not strict on the pipeline. That is, the place where the pressure loss is not considered.
6. For small chemical fertilizers and large chemical fertilizers in synthetic industrial production, high-pressure angle shut-off valves or pneumatic valves with nominal pressure PN160 nominal pressure 16MPa or PN320 nominal pressure 32MPa should be used.
In terms of operational efficiency and energy saving, the use of automatic control valves is an indispensable part. Manual valves and pneumatic valves commonly used in the traditional industry are inferior to electric valves in terms of installation cost and efficiency.
According to relevant sources in the industry, valves are mostly used to control the flow and flow of various fluids, such as water, oil, chemical liquids, etc., based on parameters such as temperature, pressure and flow. The control valves commonly used in factories include pressure reducing valves, pneumatic fixed temperature valves, solenoid valve constant temperature systems, proportional control valve constant temperature systems, and temperature control valves. When selecting various types of automatic valves, factors such as the type of heat engine, the required accuracy, the quality of the control valve, the pressure drop, the flow rate and its structure, the failure rate, the manufacturer's credit and after-sales service should be considered to achieve economical and practical purposes.
As far as the product itself is concerned, the electric valve has the advantages of easy assembly, low failure rate and meeting the automation requirements of the industry, which is a more cost-effective choice for the operator. Because the use of the general traditional pneumatic valve, it is necessary to have piping, solenoid valve and compressor to match, and the electric valve is driven by the motor, the installation is simple and easy, and the electric valve is installed with the original self-control circuit of the factory, which can save other the costing payment. In addition, the motor drive mode is smooth and open, and there is no shortcoming of excessive instantaneous force, and the failure rate can be greatly reduced.
Many people think that the electric valve is expensive and the cost of use is high. Actually, if the whole calculation, the traditional valve should be equipped with many accessories and pipeline installation, the price is not dominant, but it must bear more maintenance costs.
Http://?Bigid=72
Http://?Bigid=73
Http://?Bigid=74
Http://?Bigid=75
Http://?Bigid=81
Http://?Bigid=82
Http://?Bigid=83
Http://?Bigid=84
Http://?Bigid=85
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
Pneumatic valve selection knowledge