vacuum table relief valve

[ceencee]

I'm setting up my vacuum table,trying to get the layout all figured. I have my new regenerative blower, but Ive been told that with a regenerative blower you need a vacuum relief valve. I can find hundreds of valves on the internet, but i don't know which one is for my situation. Has anyone have one on their machine that i can get a part number off of ? Or does anyone know of a supplier that deals in these valves specifically that i can get a hold of?

Thanks
Wade

[cornbinder23]

Originally Posted by ceencee I'm setting up my vacuum table,trying to get the layout all figured. I have my new regenerative blower, but Ive been told that with a regenerative blower you need a vacuum relief valve. I can find hundreds of valves on the internet, but i don't know which one is for my situation. Has anyone have one on their machine that i can get a part number off of ? Or does anyone know of a supplier that deals in these valves specifically that i can get a hold of? Thanks Wade

I would assume that is just a valve venting to the atmosphere, any old ball valve will do to release vacuum. And can be found locally at hardware stores and are relatively inexpensive

JTCUSTOMS

[acondit]

I think that he is talking about a pressure relief valve that will automatically vent when vacuum is too great. Look at Grainger or McMaster. Also look at JoeWoodworker and his vacuum stuff.

Alan

[Al_The_Man]

If you have the table zoned and are worried about too low a vacuum just partly open an unused zone?
I have used up to 10hp regenerative and so far have had not need for relief valves.
Al.

[ceencee]

thanks guys. Hey Al, how hot does your pump get, or is a little heat nothing to worry about?

Thanks
Wade

[Al_The_Man]

I haven't measured the temp, it get fairly hot but nothing high enough to worry about.
It has an external cooling fan.
Al.

[Phife]

we have a 17hp regen pump on our 5x10. It has a relief valve that is set from the factory to 11"HG

It only opens when when the entire table is covered by a non porous sheet.

According the the pump manual it MUST have a relief valve since this type of pump needs to have some air moving. I know that If I block the relief valve the pump makes a whining noise and does not sound good.

My pump housing gets up to 55-60deg C after about 2 hours of constant running. The exhaust is around 60-65C and gets pumped outside.

[arizonavideo]

I have a 1.5" 14hg used relief valve from a carpet cleaning machine. I can check to see if it is OK. They are adjustable so you can go a little either way.

Send me pm.