Information needed on threaded "R20" Uponor fittings

Novagen_Ed

Trying to find the industry type and size of Uponor's "R20" threaded fittings. I need 90 degree elbows, threaded each end, to get straight through a subfloor with 1/2 inch MLC and QS fittings (long story), to crawlspace. Uponor only makes them in a straight configuration, doesn't offer them in Press Fit for 1/2 inch , so I'm looking for a third party supplier. Uponor would only say that they are "3/4 G" size. Someone mentioned they could be a British pipe size, but there's that bevel inside the coupling as well.
Anyone here know what they are called in the world of fluid components? I can "kludge" this together with some of their radiator elbows, ProPex to sweat fittings, and HePex I'd need to buy, but someone must make the coupling in a 90......or not.
Thanks in advance for your help, folks.

kcopp

If Caleffi doesn't have it no one would.

steamedchicago

3/4 G means 3/4 british standard parallel pipe. British Tapered Pipe threads are called "R" threads. I have no idea why G and R instead of something clear and unambiguous. I guess it's the love of confusion in british thread standards, of which there are lots to be confused by.

hot_rod

So you want a R20 street ell, essentially.

I think the G stands for gas thread in some Euro nomenclature


The terminology for the use of G and R originated from Germany (G for gas, as it was originally designed for use on gas pipes; R for rohr, meaning pipe.)

hot_rod

Novagen_Ed said:

Trying to find the industry type and size of Uponor's "R20" threaded fittings. I need 90 degree elbows, threaded each end, to get straight through a subfloor with 1/2 inch MLC and QS fittings (long story), to crawlspace. Uponor only makes them in a straight configuration, doesn't offer them in Press Fit for 1/2 inch , so I'm looking for a third party supplier. Uponor would only say that they are "3/4 G" size. Someone mentioned they could be a British pipe size, but there's that bevel inside the coupling as well.
Anyone here know what they are called in the world of fluid components? I can "kludge" this together with some of their radiator elbows, ProPex to sweat fittings, and HePex I'd need to buy, but someone must make the coupling in a 90......or not.
Thanks in advance for your help, folks.

Novagen_Ed said:

Trying to find the industry type and size of Uponor's "R20" threaded fittings. I need 90 degree elbows, threaded each end, to get straight through a subfloor with 1/2 inch MLC and QS fittings (long story), to crawlspace. Uponor only makes them in a straight configuration, doesn't offer them in Press Fit for 1/2 inch , so I'm looking for a third party supplier. Uponor would only say that they are "3/4 G" size. Someone mentioned they could be a British pipe size, but there's that bevel inside the coupling as well.
Anyone here know what they are called in the world of fluid components? I can "kludge" this together with some of their radiator elbows, ProPex to sweat fittings, and HePex I'd need to buy, but someone must make the coupling in a 90......or not.
Thanks in advance for your help, folks.

Can you just rotate the manifold 90 degrees to go straight out the back
You could buy say a3 and 4 port manifold, couple them together in the orientation you need

How many do you need.

Ironman

hot rod said:

R for rohr, meaning pipe.)

Could this have had anything to do with determining your vocation?

Novagen_Ed

Thanks everyone. Hot Rod, the "long story" is that there was Warmboard under a fireplace hearth extension,complete with (3) 1/2 inch pipe loops, instead of solid masonry.

A joist supporting the Warmboard comes right across front of firebox pier. Add a small gap between front of firebox and Warmboard, light a good fire, and edge of Warmboard smolders, hearth extension cracks.
Hearth extension has been removed and now so must the edge-charred (Warmboard) sub floor to allow a proper masonry pier to be built for the hearth extension. Loops of MLC tubing need to be cut back, sent 90 degrees downward just beyond new pier, spliced. Surgical approach is to avoid ripping up a lot of finished floor.
End of long story......thanks again. Beyond the thread size I'm uncertain what this style of connection is called : flared, etc.??

hot_rod

The threaded part is basically a BSP straight thread. Any fitting with matching thread could screw on , however, you need to seal the thread. Loctite is one common method, hemp is another

When that G thread is used on a radiant manifold the seal is made with an o- ring, taper or both. That allows a union connection so to speak to attach Pex tube easily.

I think this is what you are after. It is a fitting we offer across the pond, I maybe able to get a sample.

Not sure how many you need or when?

Novagen_Ed

Hot Rod,
Thanks! The external threaded half of the fitting in your photo, (with inside taper) looks like what I need, but in a 90, with that outside threaded connection on BOTH ends if possible.
Uponor sells it only in an "R20" straight coupling "nipple".

And yes, their QS fittings seal with a taper and O ring, which is why I prefer to avoid thread sealed pieces under the subfloor if possible.
I could send to you one of the straight nipples to see if you have a match. I'd need at least 6 pieces but if they're coming from Europe I'd probably buy 10, to have some extras.
Thanks again,
Ed

Canucker

Ironman said:

hot rod said:

R for rohr, meaning pipe.)

Could this have had anything to do with determining your vocation?

@Ironman Are you suggesting there may be some nominative determinism happening for @hot rod ?

Ironman

Canucker said:

Ironman said:

hot rod said:

R for rohr, meaning pipe.)

Could this have had anything to do with determining your vocation?

@Ironman Are you suggesting there may be some nominative determinism happening for @hot rod ?

The irony: Rohr means pipe. He's a pipe expert. What's even more ironic is that most old European names were derived from the person's or family's craft.

Canucker

Ironman said:

Canucker said:

Ironman said:

hot rod said:

R for rohr, meaning pipe.)

Could this have had anything to do with determining your vocation?

@Ironman Are you suggesting there may be some nominative determinism happening for @hot rod ?

The irony: Rohr means pipe. He's a pipe expert. What's even more ironic is that most old European names were derived from the person's or family's craft.

He had no choice. lol

hot_rod

Canucker said:

Ironman said:

Canucker said:

Ironman said:

hot rod said:

R for rohr, meaning pipe.)

Could this have had anything to do with determining your vocation?

@Ironman Are you suggesting there may be some nominative determinism happening for @hot rod ?

The irony: Rohr means pipe. He's a pipe expert. What's even more ironic is that most old European names were derived from the person's or family's craft.

He had no choice. lol

I never knew the back story until I visited the ISH show many years ago and saw rohr on a lot of products.

I had hoped I was an heir to the Rohr aerospace company that built the Bart cars

hot_rod

TRV valves have that thread and taper, this is Caleffi 338 Convertible valve, made for panel rads and towel bars..

You could remove the stem and plug it, but an expensive ell

I'll see what i can cobble together tomorrow. How long can it be on both sides, a copper ell with some adapters is possible. It would not be a short turn like this TRV body.

hot_rod

like this?

Canucker

hot rod said:

Canucker said:

Ironman said:

Canucker said:

Ironman said:

hot rod said:

R for rohr, meaning pipe.)

Could this have had anything to do with determining your vocation?

@Ironman Are you suggesting there may be some nominative determinism happening for @hot rod ?

The irony: Rohr means pipe. He's a pipe expert. What's even more ironic is that most old European names were derived from the person's or family's craft.

He had no choice. lol

I never knew the back story until I visited the ISH show many years ago and saw rohr on a lot of products.

I had hoped I was an heir to the Rohr aerospace company that built the Bart cars

I work with a Rockefeller. He's disappointed that he lives too far north to be one of the rich Rockefellers

Novagen_Ed

Thanks Hot Rod: they can be longer, but we'll be cutting away the damaged sub floor early next week and then will have a better idea about how to proceed. Will update this thread once finished.