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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]

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