What is a Proportional Valve – How to Select the Best One?

Proportional Needle Valve

A proportional needle valve is a device that can easily change the output flow and pressure. The output pressure is changed as per the ratio of inlet pressure. For instance, if the inlet pressure of the valve increases, the output pressure would also become double. Some proportional flow control regulators can easily be programmed with the required signal setting. These valves can be connected to the outlet valves without much hassle. You must know that proportional valves are also known as I/P valves. The other name for proportional valves is electrically controlled regulators.

The proportional needle valve works on the solenoid principle. A proportional flow control valve has geometry to make sure regular field strength, at a given modern, over the stroke of the magnet. Additionally, a spring is brought to counter the force of the magnet; as the spring is compressed via movement of the magnet, the spring response force will increase till it balances the magnetic pressure and motion ceases. If the present day is accelerated, the magnet (solenoid) moves similarly against the spring, till the forces are balanced again. Don’t forget that the magnet is attached to a spool in a valve, the pressure or drift can be managed in proportion to the current carried out to the solenoid! Now if you are wondering how to select a proportional valve.

How to select a Proportional Valve?

There are some factors then you need to consider when selecting a proportional needle valve:

  • First, you need to check out what kind of fluid is being controlled. This is important to check so that pressure, flow, and other requirements are considered. The characteristics of the fluid must be considered when you are getting your own electronic pneumatic proportional flow control valve.
  • You also need to check the requirement of output pressure and flow rate of the application for which you need the proportional needle valve. There are different kinds of proportional valve models that you can find in the market. You need to pick the one which is most suitable for your requirement.
  • You also need to check the operating temperature of the fluids that the valve would experience. If the temperature requirement is high then you need to get a stronger model like the proportional gas flow control valve
  • You must also consider any environmental factors like wet, dirty or other things which would affect the application of the proportional needle valve.
  • You also need to check out whether the proportional valve is easy to use or not. If you want a regulator for small applications then you need to get user friendly models.
  • Finally, you must also consider your budget. The cost of proportional flow control valve pneumatic is a big factor that you need to take into account before making a purchase.
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There are many kinds of proportional needle valve models. You need to go with the one which suits your requirements.

 

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