info filettatura

[jacobs3]

I have pipes that end with threaded fittings type 1/4" 3/8" 1/2" etc.
are threads equal to those used in air conditioners
should be threads sae

Now, I would need some fittings that on the one hand mount on the sae fittings mentioned above and on the other side excre with a standard gas thread for tubes that are normally used for hydraulics (1/4 3/8 1/2 etc etc.)


Now, looking on the internet, I found nothing to do with my case
The only thing I've found is fittings on one side of the sae and on the other side npt

I wanted to ask if this type of thread is compatible with the classical thread of pipes and fittings that are sold in Italy or if it is completely incompatible and then it would be useful to look for npt->gas adapters... What a mess


Thank you.

 

[Preparation-H]

I have pipes that end with threaded fittings type 1/4" 3/8" 1/2" etc.
are threads equal to those used in air conditioners
should be threads sae

Now, I would need some fittings that on the one hand mount on the sae fittings mentioned above and on the other side excre with a standard gas thread for tubes that are normally used for hydraulics (1/4 3/8 1/2 etc etc.)


Now, looking on the internet, I found nothing to do with my case
The only thing I've found is fittings on one side of the sae and on the other side npt

I wanted to ask if this type of thread is compatible with the classical thread of pipes and fittings that are sold in Italy or if it is completely incompatible and then it would be useful to look for npt->gas adapters... What a mess


Thank you.

I found something like this:
http://raccorderia.pegiovanni.com/p...e-maschio-femmina-sae-flare-gas-in-ottone.htmbut you should specify if you need a male-male reduction, female - female, male - female, because those linked are m-f

As for gas and npt threads are not compatible, one has a 55° thread angle the second 60°, the first can be cylindrical or conical, the second is conical.

Hi.
p-h

 

[meccanicamg]

npt and gas are not coupled directly because it changes the different thread angle and in number of threads per inch different to equal nominal tube.

there is around very little on gas npt reduction fittings. you should look at the link that gave you praparation-h. If you can't get hold of it and you need an unresolved amount, I'd say you could get them back.

to me it has often happened not to have the fittings in the workshop suitable for the work I have to do and I have always adapted them. ..just have lathe, males and chains and do everything.

 

[Meccbell]

As for gas and npt threads are not compatible, one has a 55° thread angle the second 60°, the first can be cylindrical or conical, the second is conical.

Besides, except for the 1/2" and 3/4" sizes, they also have different steps.

 

[numero1]

I don't understand. Does the gas have a 55° angle and a 60° npt?
but the bsp thread is gas and has an angle of 60°, as for example written here:http://www.forfittings.it/it-it/hom...e-dei-raccordi-a-tenuta-conica-60°-(bsp).aspxand there are many other examples around.
bsp or standard british pipe (or petroleum).
also on this site:www.antit.itI found some things like double flange sae with gas thread.
Can it be okay?
I attach an extract

 

[numero1]

I can't attach the extract, but this should be the right link:http://www.google.it/#hl=it&source=...=f&aqi=&aql=&oq=&gs_rfai=&fp=212d5a72eaade0bc
ciao

 

[meccanicamg]

make a beautiful brazing with the cannello and the takeaway wand. First you have to be sure what threads you have in your hand. buy a book counter, a caliber, download the tables and compare. then the fittings are found and at the limit of return.

 

[Meccbell]

I don't understand. Does the gas have a 55° angle and a 60° npt?
but the bsp thread is gas and has an angle of 60°, as for example written here:http://www.forfittings.it/it-it/home/prodotti/raccordi-oleodinamici-catalogo-for/sistema-di-connessione-dei-raccordi-a-tenuta-conica-60%c2%b0-(bsp).aspxand there are many other examples around.

Let's not be confused, please.
the 60th mentioned on the site is the corner of the female seat for the locking of the sealing cone between the 2 fittings and does not center anything with the angle of the gas/r/bsp thread, which since it exists (about 150 years) has always had the angle of 55°.
http://www.euroviti.it/200mantec/pdfdoc/sezione_03_4.pdfhttp://www.euroviti.it/200mantec/pdfdoc/sezione_03_5.pdf

 

[numero1]

ooops:biggrin:
comunque quello che vuole jacobs3 dovrebbe essere questo:http://www.enalt.it/pdf/cdz/componenti/raccordi_in_ottone_sae_npt_od_ods.pdfthere are sae-npt adapters such as m-m or f-f, etc. etc.
hello and tell me if I did another figure.......

 

[Preparation-H]

ooops:biggrin:
comunque quello che vuole jacobs3 dovrebbe essere questo:http://www.enalt.it/pdf/cdz/componenti/raccordi_in_ottone_sae_npt_od_ods.pdfthere are sae-npt adapters such as m-m or f-f, etc. etc.
hello and tell me if I did another figure.......

I don't know. because he needs sae-gas and not sae-npt, in fact he has specified

Now, looking on the internet, I found nothing to do with my caseThe only thing I've found is fittings on one side of the sae and on the other side npt

So I think it's not good.

Bye!
p-h

 

[numero1]

I have to have some problem, Alzheimer's advances, I will have to take supplements, it is better....... .

 

[a.belloni]

I have pipes that end with threaded fittings type 1/4" 3/8" 1/2" etc.
are threads equal to those used in air conditioners
should be threads sae

Now, I would need some fittings that on the one hand mount on the sae fittings mentioned above and on the other side excre with a standard gas thread for tubes that are normally used for hydraulics (1/4 3/8 1/2 etc etc.)

I can not understand the use of sae/npt fittings with gas fittings as you say sae/npt fittings are for refrigeration circuits, and pipes are generally copper, while gas tubes are for other uses and pipes are in "ferro".
even diameters are very different

1/4 sae(øe 11,1125mm) > 1/4 npt(øe 13,716mm) > 1/4 gas(øe 13,157mm)
3/8 sae(øe 15,875mm) > 3/8 npt(øe 17,145mm) > 3/8 gas(øe 16,662mm)
1/2 sae(øe 19,05mm) > 1/2 npt(øe 21,336mm) > 1/2 gas(øe 20,955mm)

what you are looking for and very difficult to find, also because there is no use of these types of connections.

Usually with those diameters you put vents and on the tubes you make folders to v (if it is to connect the unit home conditioner external to the internal one).

But I don't know what you have to do and so it's hard for me to help you.

Hi.