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1X1/2X3/4 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
- Size 2:
- 0.5
- 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:
- 0.56 lbs
ASC Engineered Solutions 310041405 – Frequently Asked Questions
1) What do the three numbers on a 1 x 1/2 x 3/4 black malleable iron tee mean?
They're the three openings, in order: run end 1 at 1 inch, run end 2 at 1/2 inch, and the branch at 3/4 inch. All three are female pipe thread (FPT), so the tee lets you carry a 1 inch line into a 1/2 inch continuation while pulling a 3/4 inch branch off the side without any separate bushings.
2) Will this reducing tee thread onto standard black steel pipe nipples?
Yes. The threads on the ASC Engineered Solutions 1 x 1/2 x 3/4 black tee are cut to ASME B1.20.1, which is standard NPT, so it mates with ordinary threaded black steel or galvanized nipples of the matching size. Use pipe dope or PTFE tape on the male threads as usual.
3) Can I use a black malleable iron tee on a potable water line?
No. Black malleable iron fittings are for gas, air, oil, and steam service and for dry fire sprinkler and hydronic work. The black finish is a plain uncoated iron surface with no corrosion protection, so it rusts in wet potable service. For domestic water, run copper, PEX, CPVC, or galvanized instead.
4) Is this tee approved for fire sprinkler piping?
It carries UL/FM approval, which is what an AHJ looks for on fire protection piping. It's a standard-pattern malleable iron threaded tee, so it's used on threaded sprinkler branch lines where the spec calls for UL listed, FM approved fittings.
5) What pressure class is this malleable iron tee, and does it meet spec for a gas line?
It's a standard (Class 150) pattern fitting rated per ASME B16.3, the dimensional and pressure standard for threaded malleable iron fittings, with the iron itself to ASTM A-197. Those are the two callouts a mechanical spec or gas piping submittal normally asks for. If the drawing calls out extra heavy (Class 300), this standard-pattern tee will not satisfy it.
6) Can I swap a galvanized tee for this black one on an existing threaded run?
Dimensionally yes, the threads and center-to-end dimensions both follow ASME B16.3 and ASME B1.20.1, so a black and a galvanized malleable tee of the same size and class interchange on the same nipples. Whether you should depends on service: if the existing run is galvanized because it's wet or corrosive, stay galvanized. Black is for dry gas, air, oil, steam, and dry sprinkler work.
7) How much does one of these reducing tees weigh for a takeoff or freight estimate?
Each 1 x 1/2 x 3/4 black malleable iron tee weighs 0.56 lbs. Useful if you're pricing a bulk carton or figuring hanger loading on a run with a lot of fittings.
How fast can I get the ASC Engineered Solutions 310041405 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 310041405 come with a warranty?
Absolutely. The ASC Engineered Solutions 310041405 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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