Pneumatic regulator idea/question

AI Thread Summary
The discussion centers on the use of pneumatic pinch valves in wastewater treatment plants, specifically the challenge of regulating pressure from a common air supply of 6 bar to three different pressures. The original poster inquires about the feasibility of using a flow regulator instead of three separate regulators to save space. However, it is clarified that a flow regulator would not effectively control downstream pressure in case of flow obstruction, as it allows pressure to build beyond the desired limit. A pressure regulator is deemed necessary to maintain the set pressure downstream. The conversation concludes with an acknowledgment of the need for multiple regulators despite the desire for a more compact solution.
tim100
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Hi guys,

I have a quick question that someone might be able to assist me with. As a job i build waste water treatment plants and lately we have moved from using an electric butterfly valve to a pneumatic pinch valve.

We have a common air supply of 6 bar and we now regulate to 3 different separate pressures using 3 different regulators which are all set at a specific pressure and never adjusted.

My question is can we use a flow regulator or a similar device to regulate pressure to save room instead of using 3 bulky regulators?
 
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A flow regulator wouldn't work well. Should something stop / hinder flow further down the line, the flow regulator would not stop pressure downstream of itself building beyond the required range. E.g. if someone shut a valve further down the line, the pressure at that valve would build to the maximum in the system (what would be before the regulator), instead of the required limit (what would be after the regulator).

A pressure regulator prevents pressure downstream of itself going beyond the set point.

Not sure of your line size, but the type we use for tubing aren't that large.
 
Thanks for the advise Jared. Makes perfect sense. I thought there might be another way around rather than having to mount and connect 3 regulators.

Cheers
 
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