Viega 77058 ProPress 45° street elbow Smart Connect technology Copper, 1'' x 1''

P x FTG is the street configuration. One end is a ProPress socket (P) that slips over 1 inch copper tube and gets pressed, and the other end is a fitting-end (FTG) that is sized to slide INTO another 1 inch fitting socket. That lets you change direction right at a coupling, valve or another elbow without adding a stub of tube between them.

Yes. The press end takes nominal 1 inch copper tube, and ProPress copper fittings are made for hard drawn copper in the common wall types including type L. The fitting body itself is copper, so you are pressing copper to copper.

No flame involved. The pressed end is joined cold with a press tool and the correct 1 inch jaw, which makes it the usual choice for occupied buildings, ceilings with combustibles nearby, and anywhere a hot work permit is a hassle. The FTG end is not pressed at all, it is the male end that seats into the next fitting's press socket, and that socket is what gets crimped.

No. The 77058 is a copper ProPress fitting for 1 inch copper tube only. PEX needs a Viega PureFlow fitting, and black or galvanized steel needs ProPress for steel, which uses a different fitting material and a different sealing element. Putting a copper press fitting on the wrong pipe will not seal.

Smart Connect is the feature that makes an unpressed 1 inch connection leak on purpose during pressure test, so you find the joint you skipped instead of finding it after the walls close. On a long copper run with a lot of fittings, that is the difference between a five minute fix and a callback.

That is the normal use. A pair of 45s makes a swept offset around a beam, duct or another line with far less flow restriction than a hard 90. With the 77058 you get one press end and one fitting end, so you can feed the FTG leg straight into the socket of a second 45 and make the offset with a single short piece of tube, or none at all depending on how the two fittings stack.

Order it as Viega 77058. It is a single configuration, 1 inch by 1 inch, copper, P x FTG, so there is no handing, no finish and no size option to specify. Each fitting weighs about 0.199 lbs, which is worth knowing if you are pricing a bulk pull of a hundred or more for a riser package. Made in Germany.

The body is copper, which is what you want on a copper domestic water or hydronic line. Same metal on both sides of the joint means no dissimilar metal concern at the fitting itself, and it takes the same hanger spacing and insulation you are already running on 1 inch tube.