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3/4X3/4X3/8 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:
- 0.75
- Size 2:
- 0.75
- Size 3:
- 0.375
- 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:
- 0.42 lbs
ASC Engineered Solutions 310038401 – Frequently Asked Questions
1) What do the three sizes on a 3/4 x 3/4 x 3/8 black malleable iron tee mean?
It's a reducing tee. The two run ends are 3/4 inch and the branch outlet is 3/8 inch, so 3/4 inch pipe passes straight through and you take a smaller 3/8 inch tap off the side. All three openings are female pipe thread (FPT), so male-threaded pipe or nipples thread into them. Typical uses for that small branch are a gauge, a thermometer well, a drain, or an air vent off a 3/4 inch line.
2) Will this ASC tee thread onto standard NPT black pipe and nipples?
Yes. The threads are cut to ASME B1.20.1, which is the standard NPT taper thread spec, so it mates with ordinary threaded black steel pipe and nipples in the matching sizes. All three openings are female, so you need male threads coming in on every side.
3) Can I use a black malleable iron tee on a water line?
Black malleable iron is the gas and non-potable side of the catalog. The black finish has no corrosion protection, so it's used on natural gas, propane, fire sprinkler, compressed air, and steam or dry systems. For domestic water, galvanized malleable iron is the equivalent fitting to specify instead.
4) Is this tee UL Listed and FM Approved for fire sprinkler work?
Yes, the 3/4 x 3/4 x 3/8 black malleable iron tee carries UL/FM recognition, which is what an inspector looks for on a sprinkler branch line. It's a standard (STD) class fitting built to ASME B16.3 for both dimensions and pressure rating.
5) Will this ASC tee match the dimensions of the malleable fittings already on my system?
It should. The fitting is made to ASME B16.3, the dimensional standard for threaded malleable iron fittings, so center-to-end and thread engagement match any other B16.3 fitting in the same size regardless of brand. That matters when you've cut nipples to a takeoff length off existing fittings.
6) Do I need a bushing to get a 3/8 inch branch off a 3/4 inch line?
No. This reducing tee already brings the branch down to 3/8 inch in the casting, so you thread 3/8 inch male pipe straight into the outlet. Using a straight 3/4 x 3/4 x 3/4 tee plus a 3/4 to 3/8 bushing does the same job but adds a joint and extra height on the takeoff.
7) What grade of iron is this ASC tee made from?
The casting is ASTM A-197 malleable iron, the cupola malleable grade used for threaded pipe fittings. It's more ductile than cast iron, which is why these take thread engagement and vibration on gas and sprinkler lines without cracking. Class is standard (STD) rather than extra heavy.
8) What is the ASC part number for the 3/4 x 3/4 x 3/8 black tee?
ASC Engineered Solutions part number 310038401 is the 3/4 x 3/4 x 3/8 black malleable iron reducing tee with FPT ends on all three openings.
9) How much does one 3/4 x 3/4 x 3/8 black malleable tee weigh for a takeoff?
0.42 lbs each. Handy if you're pricing freight or building a material weight on a large branch-line count.
How fast can I get the ASC Engineered Solutions 310038401 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 310038401 come with a warranty?
Absolutely. The ASC Engineered Solutions 310038401 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 310038401?
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