I've found a rountoit, and am fitting my compressors to the workshop. I've an Ingersoll Rand type 30 compressor and a small Clarke twin piston compressor, both 3 HP, that will be fitted to a ring main. I want to spray with this set up, air feed mask, and do some blasting, so would like to remove all water from the system. I was going to go with a copper pipe set up, with an auto drain, as suggested in the guide here, but then I found out about drop out filters. Are they a good alternative to the copper pipe array idea? Cost and time wise there's very little in it. https://www.ebay.co.uk/itm/DROP-OUT...rain-UP-TO-32CFM-FILTER-DRYER-M-/274461550102 Something like this?
Yes... Plumb it in before you regulate the air pressure down - I run our ring main at 100Psi - then at every outlet I reduce to 90Psi. These membrane filters need high (ish) pressure to get the water thru them - the tiny micron holes - they work sort of like GoreTex. I used to use a refrig' air dryer and now use these Dropout filters and never have any problem with them - but I don't spray paint! Only thing I could not find out when I speced them up is: Service life - how may hours at a defined CFM they last for?
Dropout filters work on cyclonic principles - nothing to wear out, block up or replace. And a lot better than anything else out there short of a full on super duper industrial dryer. http://www.sn-compressors.co.uk/drop-out-filters/ Any pressure from 1bar up, any flow from 1l/m up to capacity of the unit you pick. https://drop-out.co.uk/product-category/water-separator/?filter_drain-type=autodrain I've got the cheapest - and no issues - fit and forget.
Simple physics . . . Although I think the spec claims "down to . .." But you're asking the wrong person - ask them. I only use the product with no complaints.
I contacted the seller of the eBay listing, they've not responded, so that's out. I think I'll go back to the copper organ pipes plan, not much in the cost and time, but it's simpler.
I can't remember what I paid - several years ago - paid , it arrived, I fitted it . . . and only remember it when it is mentioned - it sits there and works - so I reckon it was worth it. A quick google reveals sellers of the plastic 300l/m version from £120 to £130 ish.
