If it's the same as my 155,t hen it is their 1/8" proprietary on the brush end and a female 1/4" NPT on the other. I have a 2 Gallon, 1/3 HP conpressor that I had to switch the regulator out for one with a moisture trap. I attached the new regulator/gauge/moisture trap using a standard 1/4"NPT Male to 1/4" NPT Male 4" long nipple extension pipe. The new regulator doesn't need anything else to connect it to the nipple extension, just screw it on. On the hose side of the regulator I installed a Male to Male 1/4" NPT adapter that the hose plugs into the other side of with a quick disconnect connector in between. If you have to swap pipes or adapters, make sure to use a good amount of teflon tape when you put things back together. There is a seller on eBay who has an inexpensive kit with just about every kind of adapter and connector you might need. The price is pretty good too. Here's a link.
http://cgi.ebay.com/17-PIECE-AIR-COMPRESSOR-ACCESSORY-KIT-NIPPLES-NOZZLES-/280617249241?pt=LH_DefaultDomain_0&hash=item41561769d99d9
Hope this helps.,
Rich