Pneumatic valve is driven by compressed air valve. Clear only when the pneumatic valve procurement specifications, type,working pressure to meet the procurement requirements of the practice, in the current environment of market economy is not perfect because the pneumatic valve manufacturer for theproduct competition, each are in the pneumatic valve under the concept of unified design, with different innovations, formed theenterprise standard and products of their own personality.
Parameter definition
Nominal diameter
Nominal diameter of said the symbol DN, is the general caliberpipe and pipe accessories. The same nominal diameter of the tube and pipe accessories can connect with each other, with interchangeability. It is not a real sense of pipe diameter or diameter, although its value is closer with pipeline diameter or equivalent, in order to make the pipe, tube connection sizeuniform, with nominal diameter (also called nominal diameter,nominal diameter).
For example, according to the thickness ofwelded steel pipe can be divided into thin-walled steel, general steel and thicker steel. The nominal diameter is not a diameter,not diameter, but the approximate a diameter of ordinary steel pipe nominal size. Each of nominal diameter, corresponding to an outer diameter, the diameter values vary with thickness. Metric mm nominal diameter can be said, also available in English, said.Piping accessories is also expressed with nominal diameter,meaning with tube.
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Nominal pressure
Nominal pressure said the symbol PN, the maximum working pressure allowed when applied at a certain temperature. Control valve on the carbon steel body, to allow the maximum working pressure below 200 ℃ application; for iron body, to allow the maximum working pressure below 120 ℃ application; control valve on the stainless steel body, to allow the maximum working pressure below 250 ℃ application. When the t. When the temperature increases, the body of the pressure will be reduced.For example, the nominal pressure 6.4MPa (PN64) carbon steelfor pressure control valve, 300 ℃ for 5.2MPa, 400 ℃ with a pressure of 4.1MPa, used for pressure at 450 ℃ for 2.9MPa.Therefore, to determine not only the nominal pressure control valve according to the maximum working pressure, also according to the maximum operating temperature and material characteristics, rather than simply meet the nominal pressuregreater than the pressure of work.
Chinabase Machinery is a group of manufacturing facilities, offering one-stop solution for mechanical power transmission products in China.Our product range also covers locking assemblies (clamping elements/locking device), taper bushes, Lifting Chain,QD bushes, bolt-on hubs, torque limiters,Chain guides, shaft collars, motor bases and motor slides, chain detachers, chain guides, universal joint, rod ends and yokes.
Chinabase is able to offer custom, cost-optimized solutions in accordance with customer drawings - such as ready-to-install machine parts and profiles - in addition to our standard products. Our internal Application Technology department and field staff are happy to provide free advice on custom solutions.

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