A. Indeed. Lots of providers and individuals use the abbreviation IPS which normally refers to iron pipe size. Once we use the time period 'IPS-sized' we're referring to pipes with NPT threads. NPT would be the abbreviation for National Pipe Thread Tapered which can be the thread regular used in http://needlevalve21973.bloginwi.com/15859492/fascination-about-valves-and-fittings