ASC Engineered Solutions 1/8 BLK MI 90 STREET ELL

A street elbow has one female and one male end, so it threads directly into a fitting or valve port without a short nipple in between. The ASC Engineered Solutions 1/8 inch black malleable iron 90 street ell carries FPT on one end and MPT on the other. A standard 90 elbow is female on both ends and needs a nipple to reach a male port. Use the street ell when you are tight on space or want to cut one joint out of the assembly.

Yes. Threads are cut to ASME B1.20.1, which is the standard NPT taper thread spec, so both the 1/8 FPT socket and the 1/8 MPT spigot mate with ordinary 1/8 inch NPT black pipe, nipples and valve ports. Both ends are the same 1/8 inch size, so it is a straight-through turn with no reduction.

Black malleable iron 90 street ells of this type are the usual fitting for black iron gas piping, and this one is built to the recognized specs for that service: ASTM A-197 malleable iron, ASME B16.3 for dimensions and pressure class, standard (STD) strength rating. Black rather than galvanized is the correct finish for fuel gas and for non-potable, non-corrosive service. Always follow the local mechanical or fuel gas code and the authority having jurisdiction for the specific application.

At 1/8 inch, this size is for instrument and accessory connections, not for distribution piping: pressure gauge tappings, sensor and switch ports, pilot and bleed lines, small drain points, and reorienting a gauge that would otherwise point the wrong way. The male end goes straight into the tapped port and the female end takes the gauge or the small nipple. Weight is 0.06 lbs, so it hangs no load on the tap.

This one is black, which is the choice for natural gas and propane, compressed air, and closed loop hydronic heating. Galvanized malleable iron is used instead where the line is wet and open to air or where code calls for it on domestic water type service. Both share the same ASME B16.3 dimensions and ASME B1.20.1 NPT threads, so the two interchange dimensionally, it is a corrosion and code decision, not a fit one.