ISO Standard for Pipe Fittings - Min thread engagement
ISO Standard for Pipe Fittings - Min thread engagement
(OP)
Hello,
I'm looking into the feasibility of of using a 3/4" or 1" ISO pipe fittings for an oil drain but having trouble locating information regarding the minimum thread engagement/depth for such a pipe.
Could someone please point me in the direction of where this information can be found or what the standard number is?
Thanks,
I'm looking into the feasibility of of using a 3/4" or 1" ISO pipe fittings for an oil drain but having trouble locating information regarding the minimum thread engagement/depth for such a pipe.
Could someone please point me in the direction of where this information can be found or what the standard number is?
Thanks,





RE: ISO Standard for Pipe Fittings - Min thread engagement
Either the design code you're design code dictates such requirements, or the thread standard itself (e.g. ISO 7-1) can you tell this info.
However, Ive noticed not all current editions of EN design codes (e.g. EN 13480) call out requirements as explicitly as e.g. ASME standards do.
On example Ive run into is the minimum required thread engagement for bolted flange joints acc. EN 13480.
RE: ISO Standard for Pipe Fittings - Min thread engagement
RE: ISO Standard for Pipe Fittings - Min thread engagement
I use the term 'such a pipe' as I assumed (maybe wrongly) that there are constant ratios for minimum thread engagement as there are when using bolts, and I was hoping to find such an equation or table.
RE: ISO Standard for Pipe Fittings - Min thread engagement
I guess when you get into some types of stainless steel there might even be other caveats (such as galling, with and without "anti-seize etc.), and with anything cross-threaded all bets are off! Putting all this together in the modern world there may well be reluctance to publish this sort of info due to the many variables and liability concerns etc. (maybe why you are having trouble finding such?); however, I would think you could probably find some info at least helpful to your understanding by web-searching e.g. with "threaded pipe joints" or "normal thread engagement" etc. keywords.
RE: ISO Standard for Pipe Fittings - Min thread engagement
I've read that there are situations were certain combinations of male/female/parallel/tapered NPS and BSP pipe standard can work together - I wonder whether it could be assumed at this stage that if this is the case then the effective engagement lengths can also be borrowed?