automated pressure regulator

[blitz97]

Hello all. I have a case where I need to regulate a water source to different set points depending on need. Currently we are having to do this manually via a PRV as I am unable to find a source for a PRV that ISNT manual in a 6" valve needed for our flowrates. Is anyone aware of a source for an automated version that will allow me to do this via 4-20, 0-10vdc, pneumatically, etc?? I am almost to the point of building/designing an actuator for our current PRV.

trying to stay away from using another pump/VFD, pressure tank, etc....

 

[LittleInch]

If I read this correctly you're using a spring loaded pressure relief valve and varying the spring strength to vary the flow.

What you need is a control valve. As a start look up fisher control valves. Masonellian also do a very good range and I'm sure there are many others, but these two will start you off with multiple options for the actuator power. Air supply and a 4 to 20 signal is pretty standard.

My motto: Learn something new every day

Also: There's usually a good reason why everyone does it that way

 

[blitz97]

actually I found what I needed here at Cla-Val!

http://www.cla-val.com/documents/pdf/E-390-02.pdf

never fails...ask the question..THEN you find the answer!

thanks