Ideal for lowering energy consumption in the pneumatic parallel suction conveying system
This valve is employed as a substitute of non-self-adjusting valves that are usually placed between cyclones and fan in pneumatic conveying systems that work through suction.
![Self-adjusting valve for pneumatic suction conveying VAR](https://en.prillwitzgroup.com/wp-content/uploads/elementor/thumbs/Valvula-autorregulable-para-transporte-neumatico-a-succion-VAR-e1682969804944-q5u6a9pltguwont8qja0xfq30egfmfeht51dwiwovw.png)
![Sistema de transporte neumático a succión con filtro de alta presión](https://en.prillwitzgroup.com/wp-content/uploads/elementor/thumbs/Sistema-de-transporte-neumatico-a-succion-con-filtro-de-alta-presion-scaled-qehrvjlso661cpg61oun3ilf83na0diee9rpbnaarg.jpg?ver=1698436402)
When used in place of those fixed-valves, self-adjusting valves allow to obtain constant speeds.
Self-adjusting valves work on the basis of the forces that are generated by interposing an airfoil-shaped piece to an air flow (See the chart below). By means of a counterbalance system, the air speed can be regulated in spite of changing amounts of product that circulate through this or other ducts.
Main advantages with respect to fixed valves:
– It saves energy, because products circulate through each duct at the proper speed thereby preventing over-dimensioning.
– Ensures quality in those products that deteriorate when conveyed at excessive speeds.
– Quite useful in thermo-pneumatic conveying where speed must be as low as possible.
Operating principle
![](https://en.prillwitzgroup.com/wp-content/uploads/2022/09/Principio-de-funcionamiento.JPG.webp?ver=1711136712)
S = drag force
M = resulting rotation
In a parallel suction pneumatic conveying system, if the load in kg/h of the conveying line decreases, its flow rate tends to increase. By having this valve, this causes the lift force S to increase, closing the valve, and thus balancing the flow rate again.