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11/4X1/2X1 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:
- 0.5
- Size 3:
- 1
- Strength:
- STD
- Thread Specification:
- ASME B1.20.1
- Ul Fm:
- Yes
- Department:
- Plumbing
- Product Group:
- Plumbing Fittings
- Product Subgroup:
- Tees
- Product Type:
- Tee
- Product Finish:
- Black
- Product Material:
- Malleable Iron
- Product Weight:
- 0.87 lbs
ASC Engineered Solutions 310044805 – Frequently Asked Questions
1) What are the three port sizes on the ASC Engineered Solutions 1-1/4 x 1/2 x 1 black malleable iron tee?
It's a reducing tee with three different openings: 1-1/4 inch, 1/2 inch, and 1 inch. All three are female pipe thread (FPT), so it takes male-threaded pipe nipples or fittings on every port. The 1/2 inch port is the branch takeoff in the common reading of the size sequence, which is why this fitting gets used where a small branch, a gauge, or a drop line comes off a larger run.
2) Will this black malleable iron tee thread onto standard NPT pipe?
Yes. The threads are cut to ASME B1.20.1, which is the standard NPT taper thread spec, so it mates with any standard NPT-threaded black or galvanized steel pipe and nipples. Use pipe dope or PTFE tape on the male threads as usual.
3) Is this tee UL Listed and FM Approved for a fire sprinkler line?
Yes, the fitting carries UL/FM recognition, so it can be used on fire protection piping where the AHJ requires listed and approved fittings. It's a standard weight (STD) malleable iron reducing tee, black finish, which is the usual fitting for wet-system branch piping in steel.
4) Can I use a black malleable iron tee on a potable water line?
No. Black malleable iron is for gas, fire sprinkler, air, and closed-loop hydronic service. It has no protective coating and will rust in potable water. For domestic water you want galvanized fittings, brass, or copper instead. This one is the black (uncoated) version.
5) Does this reducing tee meet ASME B16.3?
It is made to ASME B16.3 for both dimensions and pressure rating, and the iron itself is to ASTM A-197. That combination is what most commercial mechanical specs call for when they write "malleable iron threaded fittings, ASME B16.3."
6) Do I need a bushing to run 1/2 inch off this tee?
No bushing needed. The 1/2 inch opening is cut directly into the fitting as a female thread, so a 1/2 inch nipple threads straight in. Using a one-piece reducing tee instead of a full-size tee plus a bushing saves a joint and keeps the takeoff tighter to the main.
7) How much does this 1-1/4 x 1/2 x 1 malleable iron tee weigh?
About 0.87 lbs each. Worth knowing if you're ordering a full box for a riser job or figuring hanger spacing on a run with several fittings in it.
8) What is the manufacturer part number for this ASC tee?
The part number is 310044805, an ASC Engineered Solutions black malleable iron reducing tee in 1-1/4 x 1/2 x 1.
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Can I return it if it doesn’t work for me?
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reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the ASC Engineered Solutions 310044805 come with a warranty?
Absolutely. The ASC Engineered Solutions 310044805 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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