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1 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:
- 1
- 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:
- Black
- Product Material:
- Malleable Iron
- Product Weight:
- 0.9 lbs
ASC Engineered Solutions 310030200 – Frequently Asked Questions
1) Are all three openings on the ASC 1 inch black malleable iron tee the same size?
Yes, it's a straight 1 inch tee: all three outlets are 1 inch, and all three are female pipe thread (FPT). Nothing reduces on the branch, so it takes 1 inch threaded pipe on the run and the branch alike. If you need a smaller branch, you're looking for a reducing tee instead.
2) Will this ASC malleable iron tee thread onto standard black pipe nipples?
It will. The threads are cut to ASME B1.20.1, which is standard NPT, so it mates with any 1 inch NPT male thread, including black steel nipples and threaded pipe ends. All three ports are female, so you're threading male ends into the fitting.
3) Can I use a black malleable iron tee on a wet fire sprinkler line?
This one is UL/FM rated, which is what an AHJ looks for on sprinkler piping. It's a standard (STD) pressure class malleable iron fitting built to ASME B16.3 for both dimensions and pressure rating. Black iron is the usual choice for wet and dry sprinkler mains; galvanized is typically specified for dry systems where corrosion from residual water is a concern.
4) Is a black malleable iron tee OK for potable water?
No. Black iron fittings like this one are for gas, fire protection, steam, air and similar non-potable service. The black finish is a mill coating, not a corrosion barrier for drinking water. For potable lines use copper, PEX, CPVC or brass fittings rated for potable service.
5) Will this tee interchange with another brand's 1 inch black iron tee already in my system?
Yes. Because it's built to ASME B16.3, the center-to-end dimensions match any other 1 inch standard-class malleable iron tee made to that same standard, and the NPT threads are to ASME B1.20.1. You can pull an existing 1 inch black tee and thread this one back into the same nipples without re-cutting pipe.
6) What part number do I order for the ASC 1 inch black malleable iron tee?
The manufacturer part number is 310030200 from ASC Engineered Solutions. That's the 1 x 1 x 1 inch black malleable iron tee, standard pattern, all FPT.
7) Do I need thread sealant with this fitting, or does it seal on its own?
You need sealant. NPT is a tapered thread that seals metal to metal only with the help of pipe dope or PTFE tape, and the compound has to be rated for the service, yellow gas-rated tape or dope on fuel gas lines. The fitting itself ships with no sealant applied.
8) What grade of iron is this ASC 1 inch tee cast from?
Malleable iron to ASTM A-197. That's the ductile-annealed grade used for threaded pipe fittings, chosen because it tolerates the thread stress and impact that a plain gray iron casting would crack under. Weight of the fitting is 0.9 lbs.
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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 310030200 come with a warranty?
Absolutely. The ASC Engineered Solutions 310030200 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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