The sanitary pneumatic diverter valve is to use compressed air as the power source, the cylinder as the actuator, and with the help of electrical valve positioners, converters, solenoid valves, retaining valves and other accessories to drive the valve to achieve on-off or proportional adjustment. The control signal of the industrial automation control system completes the adjustment of the pipeline medium: flow, pressure, temperature and other process parameters.
What are the applications of sanitary pneumatic diverter valve?
What is the daily maintenance of sanitary pneumatic diverter valve?
What are the parameters of the sanitary pneumatic diverter valve?
What are the applications of sanitary pneumatic diverter valve?
The sanitary pneumatic diverter valve is an intuitive and simple flow adjustment control device. The sanitary pneumatic diverter valve is usually composed of an electric actuator or a pneumatic actuator and a valve body. Its main forms are two-seater, straight-through single-seater and straight-through two-seater. The latter has the characteristics of large flow capacity, small imbalance and stable operation, so it is usually especially suitable for occasions with large flow, high pressure drop and less leakage. Due to the advantages of sanitary pneumatic diverter valve, such as explosion-proof and reliable performance, the control valves on the market are still mainly pneumatic.
What is the daily maintenance of sanitary pneumatic diverter valve?
When the sanitary pneumatic diverter valve uses graphite-asbestos as the filler, lubricating oil should be added to the filler once about three months to ensure that the sanitary pneumatic diverter valve works well. If it is found that the packing pressure cap is very low, the packing should be added. If the PTFE dry packing is found to be hardened, it should be replaced in time; the operation of the sanitary pneumatic diverter valve should be paid attention to during the patrol inspection, and the valve position indicator and Whether the output of the regulator is consistent; for the regulating valve with a positioner, check the air source frequently, and deal with the problem in time; always keep the sanitary pneumatic diverter valve and the components intact and easy to use.
What are the parameters of the sanitary pneumatic diverter valve?
1.The nominal diameter, also known as the average external diameter, represents the symbol DN, which represents the general diameter of different pipes and tube accessories of sanitary pneumatic diverter valves.The tubes and tube accessories of the same nominal width can be interconnected interchangeably.It is not the actual outer diameter or inner diameter of the pipe, although its value is close to or equal to the pipe diameter to make the pipe and pipe fittings in the connecting size uniform.Take over the nominal diameter (also called the nominal diameter, nominal diameter).For example, welded steel tubes can be divided according to their thickness into thin-walled steel tubes, normal steel tubes and compact steel tubes.Its nominal diameter is neither the outer diameter nor the inner diameter, but a nominal width similar to the inner diameter of ordinary steel tubes.Each nominal diameter corresponds to an external diameter and the value of the internal diameter varies with the thickness.The nominal width can be given in the metric system mm or in the imperial system in customs.Pipeline accessories are also indicated in nominal widths having the same meaning as folded pipes.
2.Nominal pressure, d.Huh.the symbol PN, the maximum permissible working pressure when the sanitary pneumatic diverter valve is used at a specified temperature.For control valves with carbon steel housing, this refers to the maximum permissible operating pressure for applications under 300oC;in the case of cast iron valves, this refers to the maximum permissible operating pressure for applications under 120oC;For control valves with stainless steel housing it refers to 250oC under the maximum permissible operating pressure during application.As the operating temperature rises, the pressure strength of the valve body decreases.
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