×
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

what kind of valve we should chose to install automation & batching system

what kind of valve we should chose to install automation & batching system

what kind of valve we should chose to install automation & batching system

(OP)
I am working in a chemical company and we decided to install automation & batching system for our production line that involve mixing 5 or 6 kind of liquid raw materials for making polyurethane product mainly.
we have installed load-cells on our agitator tanks and our raw material tanks to weigh them. the purpose is to pump the materials automatically to agitator tanks and stop the pump and close the valve by PLC programming by the feedback of the load-cells .please help me to chose the suitable valve for this project.each batch contain about 12 tons of material

RE: what kind of valve we should chose to install automation & batching system

Call a valve manufacturer or talk with some of your more experienced engineers.

Ball valves are the most prevalent type valve in the Chemical industry, but it all depends on what the material is. You'll also find plug valves in polyurethane service as well. You may also need them to be internally jacketed.

You may also want to consider dribble valves. This doesn't change the valve type, but allows the valve to close to a predetermined % (like 20-30%) to slow the flow the closer you get to your desired SP.

______________________________________________________________________________
This is normally the space where people post something insightful.

RE: what kind of valve we should chose to install automation & batching system

I have visited only one facility that mixed PU, but it wasn't a batching facility like yours.
They used static mixers at the dispensing nozzle, where the mixed PU was injected into a low pressure mold, where it reacted and solidified within tens of seconds.
The components were pumped and metered by multiple Bosch fuel injection pumps, mechanically linked, and driven by a single motor.

Mike Halloran
Pembroke Pines, FL, USA

RE: what kind of valve we should chose to install automation & batching system

Hello ronissa,

Just for your information: double posting [meaning posting the identical question in more than one forum] is considered discourteous here. Please delete this posting, and in the future choose the single most suitable forum for your question, and post it there and there only. Note that many of the participants here monitor multiple fora, so posting only once is not likely to limit the number of responses you receive...whereas continuing to multiple-post might.

Thank you for your consideration.

Regards,

CR

"As iron sharpens iron, so one person sharpens another." [Proverbs 27:17, NIV]

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 - The Evolving Landscape of Commercial Battery-Powered Trucks
What’s driving the evolving landscape of truck electrification? What are the barriers, motivators and strategies for accelerating the electric transition? What insights and resources are available for today’s design engineers working to achieve industry disruption and evolution? For answers to these and other pertinent questions, read this white paper. Download Now
eBook - Rethink Your PLM
A lot has changed since the 90s. You don't surf the Web using dial-up anymore, so why are you still using a legacy PLM solution that's blocking your ability to innovate? To develop and launch products today, you need a flexible, cloud-based PLM, not a solution that's stuck in the past. 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