ASC Engineered Solutions 11/2X11/4 XH BLK MI 90 ELL

Yes, it's a reducing 90. One end takes 1-1/2 inch pipe, the other 1-1/4 inch, so it turns the corner and steps the line down in one fitting instead of using a full-size ell plus a bushing. Both ends are female pipe thread (FPT), so male-threaded pipe nipples or threaded pipe ends screw straight in.

XH is extra heavy, a thicker wall class than the standard (Class 150) malleable iron ell, with a higher pressure rating under ASME B16.3. Use it where the engineer has specified extra heavy, or on higher pressure gas, air, or steam service. If the drawing just calls for standard 150 class malleable, the XH fitting still threads the same and will work, it's simply heavier.

Yes. The threads are cut to ASME B1.20.1, which is the standard NPT tapered pipe thread spec, so it mates with any 1-1/2 inch and 1-1/4 inch NPT male pipe or nipple. Use pipe dope or PTFE tape on the male threads as the job requires.

It carries UL/FM approval, which is what an AHJ looks for on fire protection piping. Combined with the extra heavy wall class and ASME B16.3 dimensions, it's the type of fitting used on threaded black steel sprinkler mains and branch lines. Confirm the size reduction matches the hydraulic calculation for the branch.

Black malleable iron is intended for gas, air, steam, fire protection, and similar dry or non-potable service. The black finish is a mill coating, not a corrosion barrier, so it rusts in wet potable water service. For water, use a galvanized malleable fitting or a copper, PEX, or CPVC system instead.

The fitting has one 1-1/2 inch female threaded port and one 1-1/4 inch female threaded port, so the larger pipe or nipple lands in the 1-1/2 side and the downstream 1-1/4 pipe in the smaller side. There's no handing or flow direction to worry about beyond that, either port can be the inlet.

It's built to ASME B16.3, the dimensional standard for malleable iron threaded fittings, so the center-to-end lay length matches any other B16.3 reducing 90 of the same 1-1/2 x 1-1/4 size and class. Swapping one for another in an existing run won't change your pipe cuts, as long as the old fitting was also extra heavy rather than standard class.

The fitting weighs 2.15 lbs. Extra heavy malleable runs heavier than the standard class, so on a long horizontal run with several ells, add that into the load your hangers and structural attachments carry.