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1X3/4X1/2 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:
- 0.75
- Size 3:
- 0.5
- 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:
- 0.59 lbs
ASC Engineered Solutions 310041009 – Frequently Asked Questions
1) What size openings does the ASC 1 x 3/4 x 1/2 black malleable iron tee have, and which port is which?
It's a reducing tee with three female pipe thread openings: 1 inch, 3/4 inch, and 1/2 inch. All three ends are FPT, so it takes male threaded pipe nipples or male adapters at every port. The 1 inch and 3/4 inch are the run and branch combination, with the 1/2 inch as the third opening. Threads are cut to ASME B1.20.1, the standard NPT thread spec, so it mates with any standard NPT pipe or nipple.
2) Can I use a black malleable iron tee on a natural gas line?
Black malleable iron threaded fittings are the standard choice for gas piping, and this tee is built to the usual specs for that service: ASTM A-197 malleable iron, standard pressure class, and NPT threads to ASME B1.20.1 with dimensions to ASME B16.3. Black (uncoated) iron is used on gas and non-potable service rather than water supply, where galvanized or copper is typically used instead. Always follow your local gas code and the authority having jurisdiction on approved materials.
3) Is this malleable iron tee UL listed and FM approved?
Yes. The 1 x 3/4 x 1/2 black malleable iron tee carries UL/FM recognition, which is what a fire protection contractor needs to see before it goes into a sprinkler branch line or a specified mechanical system. That matters for institutional and commercial work where the submittal has to show a listed fitting.
4) Is this a Class 150 standard pattern fitting or an extra heavy tee?
Standard pattern. The strength class is STD, and both the dimensions and the pressure rating follow ASME B16.3, the threaded malleable iron fittings standard. If your drawing calls out extra heavy (Class 300) malleable iron, this is not the fitting for that line, you need the 300 pattern instead.
5) Will a B16.3 reducing tee interchange with another brand's malleable iron tee of the same size?
Yes, dimensionally. Because it is made to ASME B16.3 with ASME B1.20.1 NPT threads, the center-to-end dimensions and thread engagement match any other B16.3 standard pattern 1 x 3/4 x 1/2 malleable tee. You can swap it into an existing assembly without re-cutting nipples, as long as the fitting you are replacing was also standard pattern rather than extra heavy.
6) Do I need thread sealant with this tee, or is it included?
The tee ships as the fitting only. Threaded malleable iron joints are sealed on site with pipe joint compound or PTFE tape rated for the service, gas rated sealant on fuel gas lines. Nipples, unions, and any support hardware are separate items too, so add them to the order when you are building out a branch.
7) What is the ASC part number for the 1 x 3/4 x 1/2 black malleable tee?
ASC Engineered Solutions model 310041009. That is the number to quote when you are matching an existing submittal or reordering the same fitting across a job.
8) What does this ASC reducing tee weigh for freight and hanger load?
0.59 lbs each. Light enough that it adds essentially nothing to a hanger calculation on a short branch, but worth counting when you are pricing freight on a large fitting order.
How fast can I get the ASC Engineered Solutions 310041009 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 310041009 come with a warranty?
Absolutely. The ASC Engineered Solutions 310041009 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the ASC Engineered Solutions 310041009?
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