|Posted by hj on February 16, 1999 at 02:51:30:|
|In response to Re: 4" automatic throttling valve?|
I used a large pressure relief valve for this type of application.You need one designed for a steam system without a bleed vent. You pipe the discharge back to the pump inlet.
: I am presently hooking up six bucher plastic injection molds. They are water cooled with 2" coming in and going out. I have a 4" loop for cooling water through machines and up to cooling tower. On the end I had planned on tying the supply and return together with a 4" manual valve so they could adjust the pressure on the supply line depending on the amount of buchers running. When buchers are off water has to be able to bypass on the end.They don't trust their help to open the bypass valve more when buchers are off. They awant it to be automatic. It needs to hold 60 psi on the supply line but no more. And dump the rest in the return line. Is there such a valve. It can be diaghram/water/air/ or electrically actuated. Or anything else you can think of.. Thank you.....
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