Viega 95660 MegaPress coupling No stop Smart Connect technology 304 stainless steel, 2-1/2'' x 2-1/2''

The Viega 95660 MegaPress coupling is a 2-1/2 inch by 2-1/2 inch fitting, so it joins two runs of 2-1/2 inch pipe. Both ends are press ends (P1 x P2), meaning each side is crimped with a press tool rather than threaded or welded.

A no-stop coupling has no internal shoulder in the middle, so the pipe can slide through from either side. That lets you slip it over a fixed length of pipe (a repair cut, or a run that cannot be sprung apart) and position it where you want before pressing. Because nothing limits insertion depth, you have to mark your insertion depth on the pipe yourself before pressing each end.

It is built from 304 stainless steel. Stainless MegaPress bodies are the version used for stainless pipe systems, where a carbon steel body would create a dissimilar-metal problem. If your run is black iron or carbon steel pipe, you want the carbon steel MegaPress body instead of this 304 stainless one.

That is what the no-stop design is for. Cut out the bad section, slide the no-stop coupling fully onto the existing pipe, bring in your replacement piece, then slide the coupling back to span the joint and press both ends. A stop-type coupling cannot be used this way because the internal shoulder blocks the pipe from passing through.

Smart Connect is a feature of the sealing element that lets an unpressed connection leak detectably during pressure testing, so a joint you missed shows itself before the system is closed up and insulated. On a run with dozens of 2-1/2 inch joints, that is what keeps a single skipped press from turning into a callback.

At 2-1/2 inch, you are out of standard jaw territory. Press sizes above 2 inch are done with a press ring and an actuator on the tool rather than a one-piece jaw, so plan for the large-diameter ring in 2-1/2 inch before the fitting goes up.

Part 95660 is a straight coupling, not a tee. It joins two lengths of 2-1/2 inch pipe end to end with press connections on both sides. If you need a branch off the run, order a MegaPress tee instead.

Each 95660 coupling weighs 1.677 lbs and is made in Germany. Useful if you are pricing freight on a large fitting order or need country of origin for a government or institutional submittal.