NPT vs BSPP threads in watercooling

[Top Nurse]

Okay we have been all having our little jolies defending our particular types of water cooling threads. So let the discussion begin!

I think the BSPP thread is superior for water cooling applications as it does not seal on the thread like NPT threads do. The BSPP thread seals on the shoulder of the part with the use of an O-ring, thus it doesn't matter if there is a thread mismatch. The thread on the BSPP just forces the seal on the mating shoulder.

 

[J-Pepper]

Okay we have been all having our little jolies defending our particular types of water cooling threads. So let the discussion begin!

I think the BSPP thread is superior for water cooling applications as it does not seal on the thread like NPT threads do. The BSPP thread seals on the shoulder of the part with the use of an O-ring, thus it doesn't matter if there is a thread mismatch. The thread on the BSPP just forces the seal on the mating shoulder.

doesn't matter... as BSPP and NPT are different standards from different places...

BSPP (or G(*) ) fittings are British Standards and thus are more popular and easier to get hold of in the EU.... whereas NPT is an American standard and is easier to get hold of in the US...

I've tried looking for NPT push-fits and it's nign on impossible to find... whereas BSPP push-fits are every where...

Unless you make a new global standard.. things will stay as they are.

 

[nigely]

you can find some push in NPT fittings here
http://coolinglab.com/shop/shop.htm

 

[Bio-Hazard]

Either type work just fine as long as you know what you're doing and follow standard installation practices.................... Just remember the main point here, you HAVE to be smarter than the equipment that you are working with, or you'll always have problems..............

 

[ikellensbro]

Eh, I've used NPT fittings on my pump just fine by tightening them down enough that the base is being compressed against the base of my pump...gotta love strong plastics

O-rings are usually never bad, they do cost a little more but an extra form of protection is never bad. BSPP fittings are easier for me to tighten, but that's just me.

 

[Top Nurse]

doesn't matter... as BSPP and NPT are different standards from different places...

BSPP (or G(*) ) fittings are British Standards and thus are more popular and easier to get hold of in the EU.... whereas NPT is an American standard and is easier to get hold of in the US...

I've tried looking for NPT push-fits and it's nign on impossible to find... whereas BSPP push-fits are every where...

Unless you make a new global standard.. things will stay as they are.

The standards issue is not what you think it is. The USA is on the inch standard, but metric fasteners and cutting tools are readily available just about anywhere in the USA. You are correct that NPT is easier to get a hold of in the USA providing you don't live in bumfu@k Egypt. You can go to just about any hardware store in the USA and pickup a 1/4 NPT x 1/2" hose barb. If you want a BSPP fitting it is just a little more difficult, but not much, as places like McMaster-Carr stock tons of BSPP stuff. Now why would they stock so much BSPP if this is the USA? Because it works better than NPT when designing things other than water pipes so they sell more...

Now why have many USA manufacturer's of water cooling equipment moved a way from NPT and gone to a special thread spec that utilizes a straight thread with an O-ring hanging on the threads? Because they know that tapered threads cause lots of problems. Now the real question is why didn't they just use a standard BSPP thread spec that does the job and allows them to get their fittings off the shelf? As I poinred out already the BSPP taps are pretty much available anywhere and if you are doing the threads on a CNC lathe you can single point machine just about any thread spec you want. I think the real reason they didn't go to BSPP was they wanted to sell you a proprietary part so if you bought their water block you would have to keep coming back again and again to get your "razor blades" accessories.

 

[Top Nurse]

BSPP fittings are easier for me to tighten, but that's just me.

Usually hand tight is all you need with a BSPP thread as it is the O-ring that does the sealing.

 

[Earp]

Most of my experience comes from more industrial-style uses, however, I've never had a proper NPT joint leak. The key is proper. Start with all metal fittings. I've overtightened too many plastic-threaded parts in my time to really trust them. Add a little thread-tape or goop, and securely tighten the parts. No leaks.

 

[Bio-Hazard]

That's the key with any of the fitting styles, proper installation..............

 

[Erasmus354]

That's the key with any of the fitting styles, proper installation..............

Indeed, BSPP threads are just more noob friendly

You know what else... el cheapo motherboards are also noob friendly. The DFI boards the majority of us have are certainly NOT noob friendly. So if we are smart enough for our motherboards you would think we would be smart enough for a couple of fittings

 

[DFI Daishi]

IYou know what else... el cheapo motherboards are also noob friendly. The DFI boards the majority of us have are certainly NOT noob friendly. So if we are smart enough for our motherboards you would think we would be smart enough for a couple of fittings

........................

i don't hate you enough to send you my lanparty NFII ultra B, however anyone who has had to deal with a buggered up DFI board should know that it isn't always a simple case of figuring things out.