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1X3/4X3/4 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:
- 0.75
- 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:
- 0.74 lbs
ASC Engineered Solutions 310040803 – Frequently Asked Questions
1) What size openings does the ASC 1 x 3/4 x 3/4 black malleable iron tee have?
It's a reducing tee: the run is 1 inch on one end and 3/4 inch on the other two openings. All three are female pipe thread (FPT), so it takes male threaded pipe nipples on every port. Use it where you branch or step down from 1 inch pipe to 3/4 inch.
2) Will this malleable iron tee thread onto standard black steel pipe nipples?
Yes. The threads are cut to ASME B1.20.1, which is standard NPT taper thread, so it mates with any standard threaded black or galvanized steel pipe of the matching size. Thread with pipe dope or PTFE tape as your code requires.
3) Is this black iron tee approved for fire sprinkler piping?
It carries UL/FM approval, so it can be used in fire protection piping where a listed fittings is required. It's a standard (STD) weight malleable iron fitting rated and dimensioned to ASME B16.3.
4) Can I use a black malleable iron tee on a potable water line?
No. Black malleable iron is for gas, fire protection, air, and non-potable service. The black finish is uncoated iron and will rust in water service. For potable water you want galvanized, copper, or brass fittings instead.
5) Is this tee suitable for a natural gas or propane line?
Black malleable iron threaded fittings are the standard choice for black iron gas piping, and this one is made to ASTM A-197 malleable iron with NPT threads per ASME B1.20.1. Confirm the install against your local gas code and inspector, since some jurisdictions restrict fitting types on certain gas runs.
6) Should I use a reducing tee or a full-size tee with a bushing?
A 1 x 3/4 x 3/4 reducing tee like this one does the reduction in a single fitting, which means fewer joints to seal and less pressure drop than running a 1 inch tee and screwing bushings into the branches. Use the bushing approach only when you already have a full-size tee on hand or need a size the reducing tee doesn't cover.
7) Does this tee meet ASME B16.3 dimensions for a spec job?
Yes, both the dimensions and the pressure rating are to ASME B16.3, the standard for malleable iron threaded fittings, with material to ASTM A-197 and threads to ASME B1.20.1. That is the usual callout on a mechanical drawing for Class 150 black malleable fittings.
8) Which port on this reducing tee is the 1 inch one?
On a 1 x 3/4 x 3/4 tee the two run ends are read first and second and the branch last, so here the 1 inch and one 3/4 inch opening form the straight run and the remaining 3/4 inch opening is the branch outlet. All three are female threaded.
9) What is the part number and weight on the ASC 1 x 3/4 x 3/4 black tee?
The manufacturer part number is 310040803 and each fitting weighs 0.74 lbs. That weight is worth noting if you're hanging a long branch run or estimating freight on a bulk order of fittings.
How fast can I get the ASC Engineered Solutions 310040803 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 310040803 come with a warranty?
Absolutely. The ASC Engineered Solutions 310040803 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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