×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Flow divider needed

Flow divider needed

Flow divider needed

(OP)
Does anyone know of a flow divider that can be used to seperate a flow of water into three equal flows. Flow rate is  relatively small, approx. 300ml/min. Pressure is steady from supply at approx. 50psi. Thanks in advance.

RE: Flow divider needed

A flow splitter box comes to mind, but that is for larger water flows .. essentially a vessel with 3 equal overflow pipes or drains... for your smaller flow...?...
Fluid properties would help ... if it is a "clean fluid" that won't plug small orifices, perhaps 3 equally sized orifices with identical pressure drops across them would do the trick.
Putting the flow to a surge vessel and using 3 metering pumps from there comes to mind, too...
Good luck.

RE: Flow divider needed

I would suggest that you get your hands on one of the pharmaceutical company catalogues, Cole-Palmer comes to mind. Sometimes you can get pressure compensating flow splitters which give a somewhat even discharge. However, if as the last respondent said, anything more accurate than that, I would suggest using a four way 3/8" stainless steel spiltter from the source at 50 psi. into a manifold and then having the metering pumps do the dispensing at equal flow rates.

RE: Flow divider needed

(OP)
Thanks for responses. I'm constructing a splitter with equal orifices to evaluate.

RE: Flow divider needed

If your are looking for a flow metering pump, you might like to check out the web site www.proptec.com
This pump is available up to 12 channels with lots of flexability.  It should handle your 50 psi and will meter very viscous and/or "dirty" fluids.

RE: Flow divider needed

Equal orifices will produce equal flows from a single source only if the sum of flow resistance, exit pressure, and tube exit height are the same for the three tubes(three terms from fluid equation).  Sizing the orifice to waste a large portion of the source pressure could overcome much of the diffrences between fluid paths, the greater the drop across the orifice the less the effect from the tubes.  If the environment is clean enough for a fluid pressure regulator reliable flow regulation can be achieved by piloting from down stream of an orifice (much better flow control with less pressure loss).

RE: Flow divider needed

(OP)
Yes I agree. In fact my three lines are running to an atomizing nozzle which I believe creates a slight negative atmosphere on the fluid supply lines. Equal distribution is important as well as is delivering the entire metered charge. So a slight variation will not be catostrophic to the process. The solution does have some solid content so I'll need to test for nozzle restriction in practical applications. Thanks.

RE: Flow divider needed

Milton Roy LMI metering pumps are used almost exclusively by several clients, and industrial water treatment companies.  Those pumps may help, too.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

White Paper – Data Security and Know-How Protection
Our data is constantly exposed to the danger of being intercepted or stolen as it wends its way over global data networks. Data security measures and measures for protecting intellectual property should not, however, first be implemented when data is exchanged – companies must lay the foundation for these measures within their own organization. Download Now
White Paper – Collaboration in the PLM Context
The influence exerted by the Internet of Things (IoT) means that there is a steadily growing need for collaboration in industry. Partners from new industries and areas of application need to be integrated in cross-company business processes to ensure that the lifecycle of smart, connected products can be managed from end to end. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close