Hi basically my compressor is in my hut and have a rubber airline going to the garage with pcl fittings , doing some painting nothing high end but want to remove the water from the line , looking to buy a wall mounted filter that I can connect to then the airline off this , problem is abit confused with the different thread sizes and types , alot seem to be npt? 1/2 ,1/4 etc , is there pcl fittings that connect into this ? ,Cheers Vinny