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11/2X11/2X11/4 XH BLK MI TEE
Manufacturer Resources
Product Specs
- Dimensions Specification:
- ASME B16.3
- End Conn Size 1:
- FPT
- End Conn Size 2:
- FPT
- End Conn Size 3:
- FPT
- Material Specification:
- ASTM A-197
- Pressure Rating Specification:
- ASME B16.3
- Size 1:
- 1.5
- Size 2:
- 1.5
- Size 3:
- 1.25
- Strength:
- XH
- Thread Specification:
- ASME B1.20.1
- Ul Fm:
- Yes
- Department:
- Plumbing
- Product Group:
- Pipe Fittings
- Product Subgroup:
- Tees
- Product Type:
- Tee
- Product Finish:
- Black
- Product Material:
- Malleable Iron
- Product Weight:
- 3.05 lbs
ASC Engineered Solutions 310524202 – Frequently Asked Questions
1) What size openings does the ASC 1-1/2 x 1-1/2 x 1-1/4 black malleable iron tee have?
It's a reducing tee: both run ends are 1-1/2 inch and the branch outlet is 1-1/4 inch. All three openings are female pipe thread (FPT), so it threads onto male-threaded pipe nipples at every port. Use it where a 1-1/2 inch line needs to pick up or drop a 1-1/4 inch branch without adding a separate bushing.
2) What does XH mean on a malleable iron pipe tee, and do I need it?
XH is extra heavy: thicker walls and a higher pressure rating than a standard (Class 150) fitting, built to ASME B16.3. Specify it when the drawing calls for Class 300 malleable iron, on higher pressure gas or steam service, or where the spec sheet won't accept a standard fitting. For ordinary low pressure black iron work a standard 150 tee does the same job and costs less to buy and less to swing on a wrench.
3) Will this tee thread onto standard black pipe nipples?
Yes. The threads are cut to ASME B1.20.1, which is standard NPT taper thread, so it mates with any standard threaded black steel or malleable nipple in the matching size. Dope or tape the male threads as usual; the seal is made on the thread taper, not on a gasket.
4) Is this black iron tee approved for fire sprinkler piping?
It carries UL/FM approval, which is what an AHJ looks for on fire protection fittings. It's also built to ASME B16.3 dimensionally and to ASTM A-197 for the malleable iron itself. Confirm the approval covers the specific service and pressure class on your submittal before it goes on the riser.
5) Can I use a black malleable iron tee on a domestic water line?
No. Black malleable iron is uncoated and will rust in potable or wet open systems. It belongs on natural gas, propane, air, closed-loop hydronic heating, steam, and fire protection piping. For water service you want the galvanized version of the same fitting instead.
6) Do I need a bushing to land a 1-1/4 inch branch off a 1-1/2 inch line?
Not with this fitting. The branch is already reduced to 1-1/4 inch at the casting, so you thread the 1-1/4 nipple straight into the outlet. That removes one joint and one potential leak point compared with a straight 1-1/2 tee plus a 1-1/2 x 1-1/4 bushing, and it keeps the branch closer to the main.
7) How much does the 1-1/2 x 1-1/2 x 1-1/4 extra heavy tee weigh?
3.05 lbs each. Worth knowing when you're hanging a run of XH fittings, since extra heavy malleable adds up fast against your support spacing and it changes how many you can carry up a ladder in one trip.
8) What is the ASC part number for this reducing tee?
The manufacturer part number is 310524202, an ASC Engineered Solutions black malleable iron extra heavy tee, 1-1/2 x 1-1/2 x 1-1/4. Quote that number when you're matching what's already in a building or standardizing a stockroom bin.
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Does the ASC Engineered Solutions 310524202 come with a warranty?
Absolutely. The ASC Engineered Solutions 310524202 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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