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11/4X11/4X1/2 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:
- 1.25
- Size 2:
- 1.25
- 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:
- 0.98 lbs
ASC Engineered Solutions 310042809 – Frequently Asked Questions
1) What size outlets does the ASC 1-1/4 x 1-1/4 x 1/2 black malleable iron tee have?
The tee runs 1-1/4 inch on both run ends and reduces to 1/2 inch on the branch. All three openings are female pipe thread (FPT), so it threads onto male-threaded pipe nipples at every port. It's the fitting you use when you want to pull a 1/2 inch branch line off a 1-1/4 inch run without stacking a full-size tee and a bushing.
2) Will this black malleable iron tee thread onto standard NPT pipe?
Yes. Threads are made to ASME B1.20.1, which is the standard NPT pipe thread spec, so it mates with ordinary threaded black pipe and nipples from any supplier. All three ports are female, so you need male threads on the incoming pipe.
3) Is this ASC malleable iron tee UL Listed and FM Approved for fire sprinkler work?
Yes, the fitting carries UL/FM recognition, which is what an inspector looks for on fire protection piping. It's a standard-weight black malleable iron tee, so confirm the branch and run sizes match what the sprinkler drawing calls for before you thread it in.
4) Can I use a black malleable iron tee on a potable water line?
No. Black malleable iron is for gas, fire protection, steam, and non-potable service. Black iron corrodes in domestic water. For potable lines use brass, copper, or stainless. If you need iron for water, galvanized is the version normally specified.
5) What pressure class is this standard malleable iron tee rated to?
It's a standard (STD) class fitting built to ASME B16.3, which is the dimensional and pressure-rating standard for threaded malleable iron fittings. If your job calls for the heavier 300-class fitting, a STD tee won't satisfy the spec.
6) Do I need a reducing bushing with this 1-1/4 x 1-1/4 x 1/2 tee?
No bushing needed. The reduction is cast into the fitting, the branch is already 1/2 inch FPT. Using a reducing tee instead of a full-size tee plus a bushing gives you one less joint to seal and keeps the takeoff tighter to the run. Thread sealant or PTFE tape is still required at each joint.
7) How much does the ASC 1-1/4 x 1-1/4 x 1/2 black tee weigh?
About 0.98 lbs per fitting. Worth knowing when you're estimating hanger spacing on a run with several takeoffs, or pricing freight on a bulk MRO order of threaded fittings.
8) What is the ASC part number for this reducing black iron tee?
Order it as ASC Engineered Solutions model 310042809, a 1-1/4 x 1-1/4 x 1/2 black malleable iron tee. That's the number to quote to match a fitting already in the line.
How fast can I get the ASC Engineered Solutions 310042809 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 310042809 come with a warranty?
Absolutely. The ASC Engineered Solutions 310042809 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 310042809?
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