Viega 95525 MegaPress 90° street elbow Smart Connect technology 304 stainless steel, 4'' x 4''

Yes. MegaPress is the press system for black iron and carbon steel pipe, and the 95525 is the 4 x 4 inch 90 degree street elbow in that system. Both ends are 4 inch, so it works on 4 inch IPS pipe pressed with the matching 4 inch MegaPress jaw or ring and actuator. No threading, no welding.

The body is 304 stainless steel. That makes it a good match for wet or washdown mechanical rooms and exterior runs where a carbon steel fitting would surface rust, and it is the same fitting material used across the MegaPress stainless line. Sealing element and pipe material compatibility should match the rest of your MegaPress run.

Smart Connect is Viega's unpressed-connection feature: an intentional leak path at the sealing element so an unpressed joint shows itself during pressure testing instead of after the ceiling closes. On a 4 inch line with a 90 degree street elbow in a tight spot, that is the difference between finding a missed press at test and finding it as water damage.

The elbow itself is the only fitting required, but the press is tool-dependent: you need a MegaPress press ring and adapter jaw sized for 4 inch plus a compatible press tool. Pipe ends must be cut square, deburred, and marked to full insertion depth before pressing. Nothing threaded and no additional couplings are needed for the fitting-takeoff end, since that end inserts directly into another 4 inch MegaPress socket.