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3X3X11/4 GALV 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
- Finish Specification:
- ASTM A-153
- Material Specification:
- ASTM A-197
- Pressure Rating Specification:
- ASME B16.3
- Size 1:
- 3
- Size 2:
- 3
- Size 3:
- 1.25
- 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:
- Galvanized
- Product Material:
- Malleable Iron
- Product Weight:
- 4.67 lbs
ASC Engineered Solutions 311055008 – Frequently Asked Questions
1) What pipe sizes does the ASC Engineered Solutions 311055008 galvanized tee connect?
It's a reducing tee with two 3 inch run openings and a 1-1/4 inch branch. All three openings are female pipe thread (FPT), so it threads onto male-threaded 3 inch pipe on the run and 1-1/4 inch on the branch. Use it where you need to tap a smaller line off a 3 inch main without a bushing.
2) Are the threads on this 3 x 3 x 1-1/4 malleable iron tee NPT?
Yes. The threads are cut to ASME B1.20.1, which is the standard for NPT pipe threads, and all three openings are female. It mates with any standard NPT male thread, so it works with threaded steel pipe, galvanized pipe, or NPT nipples and adapters. Dope or PTFE tape the joint as usual.
3) Can I use this galvanized malleable iron tee on a fire sprinkler line?
It carries UL/FM approval, so it is acceptable for fire protection piping where a UL Listed, FM Approved threaded fitting is called for. It is standard (STD) pressure class per ASME B16.3. Confirm the fitting class matches the working pressure on your sprinkler drawing before you set it.
4) Will this tee match the dimensions of the fitting I'm replacing?
Center-to-end and thread engagement are built to ASME B16.3, the dimensional standard for malleable iron threaded fittings, so it interchanges with any other B16.3 3 x 3 x 1-1/4 reducing tee regardless of who made it. If the fitting coming out is a B16.3 standard-class tee, this drops into the same laid length.
5) Is a galvanized malleable iron tee OK for a domestic water line, or should I use a different material?
Galvanized malleable iron threaded tees are a plumbing-department fitting and are commonly used on galvanized steel water, air, and fire lines. The zinc coating is hot dip galvanizing to ASTM A-153, which is what gives it corrosion resistance over bare iron. If you're running copper or PEX, you don't want this fitting at all except as a transition at a threaded adapter, and for potable work verify your local code's requirements for the material you are joining.
6) Do I need a bushing to reduce the 3 inch branch down to 1-1/4 inch?
No. The reduction is cast into the fitting: the branch opening is already 1-1/4 inch FPT. Ordering a straight 3 x 3 x 3 tee plus a 3 x 1-1/4 bushing gets you the same connection with two extra joints to leak. Thread your 1-1/4 inch line straight into the branch.
7) What grade of malleable iron is this tee made from?
The casting is ASTM A-197 malleable iron, the cupola malleable iron grade used for threaded pipe fittings. That's what allows it to be threaded and take wrench torque without the brittleness of gray cast iron.
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Does the ASC Engineered Solutions 311055008 come with a warranty?
Absolutely. The ASC Engineered Solutions 311055008 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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