ASC Engineered Solutions 1X1/2 XH BLK MI REDUCER

It joins 1 inch pipe down to 1/2 inch pipe. Both ends are female pipe thread (FPT), so it threads onto male-threaded pipe or nipples on each side. Threads are cut to ASME B1.20.1, the standard NPT thread spec, so it mates with any standard NPT threaded pipe in those sizes.

Yes, the 1 x 1/2 extra heavy black malleable iron reducer carries UL/FM. That is what a sprinkler contractor or an AHJ looks for on threaded fittings in a fire protection line, alongside the ASME B16.3 dimensional and pressure basis.

No. Black malleable iron is for gas, air, steam, and fire protection service. The black finish has no corrosion protection for wet potable use, and black iron is not a potable water material. For water supply, use galvanized, copper, or CPVC instead.

XH is extra heavy, a thicker-wall class carrying a higher pressure rating than the standard class in the same size. Both classes are dimensioned and pressure rated to ASME B16.3, so an XH fitting threads into the same NPT pipe as a standard one. Spec XH where the drawing or the system pressure calls for the heavier class; for ordinary low pressure black iron gas or air runs, standard weight is usually what gets used.

The casting is made to ASTM A197, the standard for cupola malleable iron used in threaded pipe fittings. That is the material spec a mechanical inspector or submittal reviewer will be looking for on a black iron fitting.

ASC Engineered Solutions model 310542600, and it weighs 0.71 lbs. Useful if you are building out a freight estimate on a pallet of fittings or matching an existing line item on a submittal.

Yes. The ends are tapered NPT threads made to ASME B1.20.1, and tapered pipe thread relies on a thread sealant, either PTFE tape or a pipe joint compound rated for the service, to seal. On gas lines use a sealant approved for the fuel gas in question.