Pneumatic valve model diagram of water treatment equipment and complete interpretation

in pneumatic valves on the technical support for production and research and development, domestic pneumatic valve is not behind abroad pneumatic valve, instead a lot of products on the technology and innovation can already and international enterprises. The development of domestic pneumatic valve industry is toward high-end modern direction. In industrialization, urbanization, the reform and globalisation four big power, driven by pneumatic valve equipment manufacturing industry in our country prospect is broad, the future of pneumatic valve industry high-end, localization, modernization, will be the main direction of future development of the pneumatic valve industry. The pursuit of innovation, create new markets for pneumatic valve enterprise, to make the enterprise in the increasingly competitive pump pneumatic valve industry strives for the survival and development in the spring.
with the continuous development of technology of pneumatic valve, pneumatic valve broadening the application field, and the matching of pneumatic valve standard is becoming more and more indispensable. Pneumatic valve industry products to enter a period of innovation, product category not only need to upgrade, the enterprise internal management also need according to industry standards to deepen the reform.
pneumatic valve nominal diameter and nominal pressure numerical
GB/T - Standard regulation, pneumatic valve nominal diameter is only a logo, represented by a combination of symbols 'DN' and digital, nominal size does not represent a pneumatic valve diameter measured values, the pneumatic valve of the actual diameter values by the related standards, generally measured values ( Mm) Shall not be less than the nominal dimension numerical %. Nominal size of the metric system ( Symbol: DN) And English ( Symbol: NPS) , use metric gb pneumatic valve, pneumatic valve American standard for English. Metric DN value is as follows:
preferable DN value is as follows: DN ( 公称通径mm，DN，DN，DN，DN，DN，DN，DN，DN，DN，DN，DN，DN，DN，DN，DN，DN，DN，DN，DN，DN，DN，DN，DN，DN，DN，DN,DN，DN，DN，DN，DN，DN，DN，DN，DN，DN GB/T- Standard regulation, nominal pressure of the pneumatic valve is also a logo, represented by a combination of symbols 'PN' and Numbers, nominal pressure ( Unit: Mpa Mpa) Cannot be applied to calculate the purpose, do not represent the actual measured value of pneumatic valves, the establishment of the nominal pressure purpose is to simplify the number of the specifications of the pneumatic valve pressure, when choose, design, manufacturing units and units used are near to the provisions of the data on the principle of the establishment of the nominal size is the same purpose. The European system (nominal pressure points PN） And the American system ( CLASS。 China's nominal pressure is to use the European system standard. Specifications are as follows: the PN. （ Nominal pressure. Mpa） PN。 PN。 PN。 , PN and PN and PN and PN and PN and PN /, / PN and PN /, PN and PN and PN CLASS: LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB
the pneumatic valve model establishment preface pneumatic valve figure number should be expressed usually pneumatic valve drive mode, connection type, form, structure features, sealing materials, pneumatic valve body material and the nominal pressure, etc. The standardization of pneumatic valve type of pneumatic valve design, selection, sales, provides the convenience. The type of pneumatic valves and materials today more and more, pneumatic valve model establishment will become more and more complicated. Although China has pneumatic valve model establishment of unified standards, but more and more can not adapt to the needs of the development of pneumatic valve industry. Whoever cannot adopt the standard number of new type of pneumatic valves, the factory according to your need to model. Standard for pneumatic valve model establishment method is suitable for industrial piping with brake pneumatic valve, throttle pneumatic valves, pneumatic ball valve, butterfly valve, pneumatic diaphragm valve, pneumatic valve, plunger cock pneumatic pneumatic valve, safety valve, check valve, vacuum pneumatic valve, drain valve etc. It includes pneumatic valve model establishment and the naming of pneumatic valve. Pneumatic valve figure number under the specific preparation method is a standard method of pneumatic valve figure number written in the code sequence diagram:

the pneumatic valve model establishment sequence diagram
understand the figure on the left, is the first step to understand all kinds of pneumatic valve figure number. Under the first, for example, let everybody have a general understanding of: pneumatic valve type: 'ZY - Idns, 'this is a complete brake pneumatic valve type, speaking preparation does not include the last' DN 'is in the meaning of this is pneumatic valve diameter for mm, well understood. The front part: 'ZY - I 'according to the sequence diagram above the table, as follows:' Z 'is the unit; '' is the unit; '' is the unit; '' is the unit; 'Y' is the unit; '' is the unit; 'I' is a unit of the pneumatic valve figure number meaning is: the brake pneumatic valve, electric drive, welding connection, wedge single ram, carbide seal, Mpa pressure, chrome molybdenum steel pneumatic valve body material. Unit
a: pneumatic valve type code

has other function features or other specific institutions with pneumatic valves, the pneumatic valve type code before filling a Chinese phonetic alphabet, according to the regulation of the table below:

2 unit: drive for

3 unit: connection type

4 units: pneumatic valve structure
gate structure code

stop pneumatic valve, throttle valve and pneumatic valve plunger structure code

pneumatic ball valve structure code

butterfly pneumatic valve structure code

pneumatic diaphragm valve structure code

cock pneumatic valve structure code

check pneumatic valve structure code

security pneumatic valve structure code

the reduced pressure pneumatic valve structure code

steam hydrophobic pneumatic valve structure code

blowdown pneumatic valve structure code

five units: sealing surface and lining material code

six modules: nominal pressure numerical value directly with the Arabic numeral, said the seven times by numerical is MPa unit value unit: pneumatic valve body material

grey cast iron steel medium pressure of low pressure pneumatic valve and omit the pneumatic valve.