Viega 25081 MegaPressG extended coupling No stop Smart Connect technology Carbon steel, 1'' x 1''

Model 25081 is a 1 inch by 1 inch extended coupling in the MegaPressG line, made from carbon steel with press connections on both ends (P1 x P2). An extended coupling joins two runs of 1 inch black iron pipe with a press tool instead of threading or welding. Being an extended body, it has more length than a standard coupling, which helps when you are closing a gap in an existing run or bridging a cut-out section.

The G in MegaPressG designates Viega's gas-rated press line, and the 25081 is a MegaPressG carbon steel fitting with a Smart Connect feature built into the sealing element. Smart Connect is what shows an unpressed connection during pressure testing, which matters on fuel gas work where every joint has to be verified. Use it on black iron pipe in the sizes it is made for, here 1 inch.

No. The 25081 is carbon steel with MegaPressG press ends sized for 1 inch iron pipe. Copper tube takes a copper press fitting such as Viega ProPress, and PEX takes a PEX press system. Putting a steel press fitting on copper mismatches both the outside diameter and the sealing element, and it will not seal.

Plan on 4.382 inches of length along the pipe and 1.78 inches across the body in both directions. That overall length is the figure that decides whether the fitting clears a joist bay, a strut, or a wall penetration, and you also need swing room for the press jaw around that 1.78 inch body.

Press connections need a press tool with jaws matched to the system and size, so you want MegaPress 1 inch jaws on a compatible press tool. There is no threading, soldering, or welding involved, which is the main reason crews on occupied buildings choose it over threaded black iron.

A standard coupling is short and usually has an internal stop, so each pipe end seats against the center and the pipe has to be able to move into the fitting. The 25081 extended coupling is 4.382 inches long with no stop, so it slides over a fixed pipe end and spans a longer gap. On a cut-and-repair in a run that cannot be sprung apart, the extended no-stop version is the one that works.

Order Viega part 25081. That number covers the 1 inch by 1 inch carbon steel MegaPressG extended coupling, no stop, with Smart Connect. It is a single configuration, so there is no finish or end-option to choose beyond the size.

Made in Germany, and it weighs 0.674 lbs. The weight is worth knowing if you are pricing out a bulk order for shipping or calculating hanger loads on a long press-fitted run.