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Air compressor selection
6

Air compressor selection

Air compressor selection

(OP)
We are evaluating bids for a small, low pressure air compressor application (120 cfm @ 30 psig).  Two different types have been quoted: claw pump and rotary screw.  Determining factors may be O&M (operations and maintenance) and reliability.
  
Q1: Does anyone have opinions about the two types of machine (good or bad reliability, high or low maintenance, etc.)?
Q2: Any strong feelings about either Curtis or Quincy screw machines?

Thank you for any feedback you can offer!
SoCalBiker      

RE: Air compressor selection

120cfm is not small.  I'm partial to the screw type.  We've had one here for years without a single hiccup.  Quincy makes good machines.

Dan

www.eltronresearch.com
Dan's Blog

RE: Air compressor selection

rotary screw air compressors are better for long-term operation.  However, air quality requirements are just as important.  Be sure that the air delivered meets the needs for quality.

another supplier is Kaeser (http://us.kaeser.com/Products_and_Solutions/Rotary-screw-compressors/default.asp#0), but the other mfg's mentioned are good suppliers.

we just installed a Kaeser rotary unit and I'm really impressed with the machine.  Simple, quiet, compact, and well engineered.  Very good quality!

hope this helps.
-pmover

RE: Air compressor selection

Ingersoll-Rand makes small rotary air compressors.

"Wildfires are dangerous, hard to control, and economically catastrophic."

Ben Loosli

RE: Air compressor selection

The claw may be oil-free.

If you need clean air at the point of use that may be an important consideration for you.

A screw compressor will need oil separators, coalescing filters etc. to provide the same clean air.  Extra components are extra maintenance.

RE: Air compressor selection

We have a Quincy rotary screw QSI 750 in our facility and just purchased another one last week. Great operating capabilities, low maintenance, and Quincy in general has the best warranty I saw while gathering quotes for this recent project.

 

RE: Air compressor selection

(OP)
I'm very grateful to all the respondents to my original posting.  The input received was definitely helpful in reaching a purchase decision for the new compressor.

Thank you one and all!

RE: Air compressor selection

And you bought......

rmw

RE: Air compressor selection

(OP)
We are in the process of purchasing the Quincy rotary screw machine.  Again, my thanks go out to those of you who submitted input via this forum.

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