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11/4X11/4X11/2 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:
- 1.25
- Size 2:
- 1.25
- Size 3:
- 1.5
- Strength:
- STD
- 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:
- 1.45 lbs
ASC Engineered Solutions 310048400 – Frequently Asked Questions
1) What are the three port sizes on the ASC Engineered Solutions black malleable iron reducing tee, model 310048400?
Two ports are 1-1/4 inch and the third is 1-1/2 inch, so it's a reducing tee: run 1-1/4 x 1-1/4 with a 1-1/2 inch branch. All three openings are female pipe thread (FPT), cut to ASME B1.20.1 NPT, so they screw onto standard threaded black steel pipe or nipples without an adapter.
2) Is this black malleable iron tee approved for fire sprinkler piping?
Yes, the 310048400 tee carries UL/FM approval, which is what an AHJ looks for on threaded fittings in a wet or dry sprinkler system. It's standard weight (STD) malleable iron to ASTM A-197, pressure rated per ASME B16.3.
3) Can I use a black malleable iron tee on a potable water line?
No. Black malleable iron is for gas, fire protection, air, and non-potable service. The black finish on this fitting is an uncoated mill finish that will rust in wet potable service. For domestic water, go to a galvanized malleable fitting, brass, or copper instead.
4) Will this tee interchange with other brands of 1-1/4 x 1-1/4 x 1-1/2 black malleable fittings?
Dimensionally, yes. The tee is made to ASME B16.3, the standard that fixes center-to-end dimensions for malleable iron threaded fittings, and to ASME B1.20.1 NPT threads. Any other Class 150 B16.3 fitting of the same size configuration will lay out the same and thread the same, so it drops into an existing black iron assembly without re-cutting pipe.
5) Which opening on a 1-1/4 x 1-1/4 x 1-1/2 tee is the larger one?
On a reducing tee written 1-1/4 x 1-1/4 x 1-1/2, the first two figures are the run and the last is the branch, so the 1-1/2 inch opening is the branch outlet and the straight-through run is 1-1/4 inch. Order it that way when you need to take a larger drop or riser off a smaller main.
6) How heavy is this 1-1/4 x 1-1/4 x 1-1/2 black tee for takeoff and hanger sizing?
1.45 lbs each. Useful when you're totalling fitting weight on a horizontal run for hanger spacing, or figuring freight on a bulk fitting order.
7) Do I need to dope or tape the threads on this malleable iron tee?
Yes. The FPT openings are tapered NPT per ASME B1.20.1, and tapered pipe threads seal on the thread engagement, not a gasket, so they need pipe dope or PTFE tape rated for the service. On gas work, use a dope listed for the fuel.
How fast can I get the ASC Engineered Solutions 310048400 delivered?
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the ASC Engineered Solutions 310048400 come with a warranty?
Absolutely. The ASC Engineered Solutions 310048400 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the ASC Engineered Solutions 310048400?
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