© 2017 Designed by www.reachcentricaltd.com

ENGINEERING FORUM

ylcvpmnp
Apr 9, 2018

Check Valve Switch flow calculation

1 comment

Hi,

 

I have a check valve (air) that I would like to compute the air flow at which the check valve is activated. It is used to maintain a safe level of vacuum in a system. The valve is normally closed (no air flow) and it is open when the pressure on both sides is equal (vacuum). The spring constant is known so are the diameter on both inlet/outlet orifices. I have no instruments to establish the flow so I would like to solve it mathematically. Any reference, examples will be greatly appreciated.

 

Please help.

I didn't find the right solution from the Internet.

References:

https://www.engineersedge.com/engineering-forum/showthread.php/5206-Check-Valve-Switch-flow-calculation

P2P currency example

 

Thanks

roger9an0
Jun 3, 2018Edited: Jun 3, 2018

I try to establish a example here to understand the Check valve switch flow calculation here.

The investigation has demonstrated the pump non-return valves must be equipped for coordinating a rate of stream rot of 2.45 m/s (in light of ostensible 400mm i.d. Flexible Iron pipework) to zero of every 0.21 seconds. This compares to a stream deceleration of 11.60 m/s

 

With a run of the mill stream speed of 2.00 m/s, i.e. a deceleration rate of 1.33m/s*2, a standard swing check valve is regularly equipped for conclusion in roughly 1.5 seconds from a completely vacant position. Because of the investigation a quick acting spring helped type check valve was suggested on all pumps.

nitial flow rate of 2.45 m/s (8.04 fps) will decelerate to zero in 0.21 seconds Deceleration of 11.6 m/s*2 (38.1 ft/s*2).

Hope, it will help to understand the calculation.

New Posts
  • noracristian97
    Nov 11

    It’s natural that we all are waiting desperately for the biggest shopping season name as black Friday promotion started of sale just before a month and in our mind rolling all stuff related to shopping. We get enough discounts on electronic stuff and clothing wear. But we don’t realize that some retailers trying to make us fool by creating amazing discount hype for this day. No worries you can easily save from this by doing proper research and analyzing pricing differences as well as consumer reports also been established to track out every individual misshapen or fraud. To get benefits of this day you have to prepare yourself early now those days are gone when people looking for Sunday to find out a great deal now black Friday sale started from one month before and if some of giving you best black friday deals 2019 with free shipment so don’t wait it so much just get this amazing offer after doing all proper research about fabric quality of product because we have seen so few this type of beneficial offer for customers.
  • Richard Pery
    Oct 10

    Weddings are a beautiful experience. Every girl wants to look at the most beautiful girl at her wedding. This white Beaded Ivory Wedding Dress is a perfect fit for any bride. The round neck dress has a beautiful leaf lace around the neck area. Shop this pretty dress at PromDress.Me.Uk
  • timberjohn27
    Oct 24

    Hello, I'm trying to use box2d (porting for dellphi) for kinematic and dynamic simulations of linkages, and it looks very powerful and nice to use. I've to treat linkages smaller then 1 m, with bodies often smaller than 0.05m, and because of the limitation from 0.1 to 10 m, there are very big errors in collision and joint evaluation. Is there a way for increasing the precision of the calculation for small objects, also accepting a very slow evaluation process? Any help will be apprecited. I didn't find the right solution from the Internet. References: http://box2d.org/forum/viewtopic.php?t=9360 Business video service Thank you.