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11/4X11/4X3/4 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:
- 0.75
- 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:
- 1.07 lbs
ASC Engineered Solutions 310042601 – Frequently Asked Questions
1) What size are the three openings on the ASC 1-1/4 x 1-1/4 x 3/4 black malleable iron tee?
It's a reducing tee: the run is 1-1/4 inch on both ends and the branch outlet is 3/4 inch. All three openings are female pipe thread (FPT), so it takes threaded male pipe ends on the run and a 3/4 inch male thread on the branch. Use it where you need to pull a smaller 3/4 inch takeoff off a 1-1/4 inch line without adding a separate bushing.
2) Is this tee approved for fire sprinkler piping?
It carries UL/FM approval, so it can be used on fire protection piping where a listed threaded malleable iron fitting is called for. It's a standard (STD) pattern fitting dimensioned and pressure rated to ASME B16.3. Confirm the pressure class on your sprinkler drawing matches a standard class fitting before you commit the takeoff.
3) Can I use a black malleable iron tee on a domestic water line?
No. Black malleable iron is for non-potable service: gas, fire sprinkler, compressed air, steam, and hydronic heating lines. It has no protective coating and will rust in wet potable service. For potable water you want a galvanized fitting or a copper/brass equivalent in the same 1-1/4 x 1-1/4 x 3/4 configuration.
4) What is the difference between a standard and an extra heavy malleable iron tee?
This one is the standard (STD) class, which is the common 150-class pattern used for general gas, air, and sprinkler work and is what most plans call out by default. Extra heavy fittings have thicker walls and a higher pressure class for high-pressure or heavy steam service. If your spec sheet just says malleable iron tee to ASME B16.3 with no class noted, standard is the right one.
5) Will this fitting meet a spec calling for ASTM A197 malleable iron?
It does. The casting is made to ASTM A-197, with dimensions and pressure rating to ASME B16.3 and threads to ASME B1.20.1. That's the full set of callouts most mechanical specs and submittals ask for on a threaded malleable iron fitting, so it submits cleanly on institutional and commercial jobs.
6) How much does one of these 1-1/4 inch malleable iron tees weigh?
About 1.07 lbs each. Worth knowing when you're figuring hanger spacing and support loads on a long threaded run, or pricing freight on a full box for a rough-in.
7) What is the part number to order this ASC reducing tee?
The manufacturer part number is 310042601, the ASC Engineered Solutions 1-1/4 x 1-1/4 x 3/4 black malleable iron tee. That's the number to quote for matching on a reorder or cross-referencing against a distributor line sheet.
How fast can I get the ASC Engineered Solutions 310042601 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 310042601 come with a warranty?
Absolutely. The ASC Engineered Solutions 310042601 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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