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by Jim
(Webster NY )
Have a few questions. What size motor do i need to run this DeVilbiss compressor model 220 pump and 30 gallon tank?
There is no horsepower rating on the electric motor and the motor is no good.
Also what kind of CFM could i expect out this pump? Is it a good shop compressor for constant air to a plasma cutter?
Thanks
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DVS ystems 220 pump
First off, it’s obsolete, though I expect you’ve figured that out?
With a 1HP motor, it can put out 3.5 CFM at 100PSI.
I leave to you whether that’s enough to run your plasma cutter.
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Model 220 motor size
My Devilbiss compressor PL501 has a 220 pump on it with a 1hp peerless motor with it.
If how to size a motor pulley, we have a guide with a worked example on our site!
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what hp is my 1949 330 devilbiss air compressor pump. I run a 2hp ge motor 240v
It runs 1 to 2 HP. If yours is a real 2HP (probably) then it should be running at 780 RPM. Or thereabouts.
800rpm max = 150psi, 750 rpm max = 200psi says on pump. I just don’t know the hp. a few people are asking me what my pump hp is. thanks
I see. They probably want to know the HP of your motor.
Pumps don’t “have” HP, they need/use HP.
But because of the the speed requirements, it can’t really use more than about 2HP.
You could put a 5HP motor on it, but you’d need to stay within the speed limits of the pump, and it would never use more than ~2HP. Unless it seized or something.
So tell them it’s a $-real-$ 2HP, or that it’s 4HP, by present store standards.