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11/4X11/4X1 GALV 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
- Finish Specification:
- ASTM A-153
- Material Specification:
- ASTM A-197
- Pressure Rating Specification:
- ASME B16.3
- Size 1:
- 1.25
- Size 2:
- 1.25
- Size 3:
- 1
- 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:
- Galvanized
- Product Material:
- Malleable Iron
- Product Weight:
- 1.22 lbs
ASC Engineered Solutions 311042402 – Frequently Asked Questions
1) What size pipe does the ASC 1-1/4 x 1-1/4 x 1 galvanized malleable iron tee take on each opening?
Both run ends are 1-1/4 inch and the branch is 1 inch, so it runs 1-1/4 inch pipe straight through and reduces only on the outlet. All three openings are female pipe thread (FPT), cut to ASME B1.20.1, which is standard NPT. You thread it onto male pipe thread or a male-threaded nipple on all three sides.
2) Is this galvanized malleable iron tee UL Listed and FM Approved for fire sprinkler work?
Yes. The tee carries UL/FM recognition, which is what a fire protection contractor needs for a wet or dry sprinkler branch line. Body is malleable iron to ASTM A-197 with standard (STD) pressure class per ASME B16.3, and the galvanized coating meets ASTM A-153, which is the hot-dip spec dry-pipe systems are usually specified to.
3) Can I use a galvanized malleable iron tee on a gas line, or is it water only?
Malleable iron threaded fittings to ASME B16.3 with NPT threads are used on both water and gas piping, but galvanized is the wrong choice for natural gas or propane in most jurisdictions because the zinc coating can flake and foul controls. For fuel gas, use the black malleable iron version of the same fitting. This galvanized one belongs on water, sprinkler, and air service.
4) Do I need a bushing to drop from 1-1/4 inch to 1 inch, or does this tee already do it?
No bushing needed. The reduction is built in: 1-1/4 inch on both run ends and 1 inch on the branch. Using this in place of a full-size tee plus a 1-1/4 x 1 bushing removes one joint and keeps the branch takeoff tighter to the main, which matters in a crowded ceiling.
5) Is a galvanized tee the right pick for an outdoor or damp mechanical room, or should I use black iron?
Galvanized is the one to use where moisture is present. The coating is hot-dip to ASTM A-153, which is the heavier spec meant for threaded hardware and gives corrosion protection black iron does not have. Black malleable is for dry interior gas and some dry-service lines. Keep the whole run in one material where you can, since mixing galvanized and black at a joint invites corrosion.
6) How much does the 1-1/4 x 1-1/4 x 1 malleable iron tee weigh for a takeoff or freight estimate?
1.22 lbs each. Handy if you are pricing out a box of them for a sprinkler branch or costing shipping on a bulk order of reducing tees.
7) What is the ASC Engineered Solutions part number for this tee?
The manufacturer part number is 311042402, an ASC Engineered Solutions 1-1/4 x 1-1/4 x 1 galvanized malleable iron reducing tee. That is the number to quote when matching an existing spec or reordering the same fitting.
How fast can I get the ASC Engineered Solutions 311042402 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 311042402 come with a warranty?
Absolutely. The ASC Engineered Solutions 311042402 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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