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1/2X3/8X1/2 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:
- 0.5
- Size 2:
- 0.375
- Size 3:
- 0.5
- Strength:
- STD
- Thread Specification:
- ASME B1.20.1
- Ul Fm:
- Yes
- Department:
- Plumbing
- Product Group:
- Plumbing Fittings
- Product Subgroup:
- Tees
- Product Type:
- Tee
- Product Finish:
- Black
- Product Material:
- Malleable Iron
- Product Weight:
- 0.33 lbs
ASC Engineered Solutions 310037403 – Frequently Asked Questions
1) What size are the three openings on the ASC 1/2 x 3/8 x 1/2 black malleable iron tee?
Two of the three openings are 1/2 inch and the branch is 3/8 inch, so it's a reducing tee: you run 1/2 inch straight through and take a 3/8 inch drop off the side. All three are female pipe thread (FPT), so you thread male pipe nipples or male fitting ends into it.
2) Can I use a black malleable iron tee on a water line?
Black malleable iron is the wrong choice for potable or wet water service, it rusts. The black finish on this tee is a mill/oil coating, not a corrosion barrier. It's the standard fitting for natural gas and propane piping, air, and dry fire sprinkler-type work, and for hydronic closed-loop steam and heat lines. For domestic water, go galvanized, copper, or brass instead.
3) Is this tee UL listed / FM approved?
Yes, this ASC Engineered Solutions malleable iron tee carries UL/FM recognition, which is what an inspector looks for on fire protection piping and what most jurisdictions want to see on a gas job spec.
4) Is this a standard or extra-heavy malleable iron fitting?
Standard weight (Class 150). The Strength is listed as STD, and both the dimensions and the pressure rating are to ASME B16.3, the malleable iron threaded fittings standard. If your drawing calls for Class 300 extra-heavy, this isn't the fitting.
5) Does this reducing tee meet the ASTM material callout on my submittal?
The casting is malleable iron to ASTM A-197, with dimensions and pressure class per ASME B16.3 and NPT threads per ASME B1.20.1. That's the usual three-line callout on a mechanical submittal for black malleable fittings.
6) Which opening is the 3/8 inch branch on a 1/2 x 3/8 x 1/2 tee?
By the standard reducing-tee naming convention, the two outside numbers are the run and the middle number is the branch. So on the 1/2 x 3/8 x 1/2, the straight-through run is 1/2 inch both ends and the 3/8 inch is the side outlet, typically used for a gauge, a small drop, or a regulator tap off a 1/2 inch line.
7) What part number do I order for the 1/2 x 3/8 x 1/2 black tee?
The manufacturer part number is 310037403 from ASC Engineered Solutions. Each fitting weighs 0.33 lbs, useful if you're pricing out a bulk pull for a job.
How fast can I get the ASC Engineered Solutions 310037403 delivered?
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Can I return it if it doesn’t work for me?
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reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the ASC Engineered Solutions 310037403 come with a warranty?
Absolutely. The ASC Engineered Solutions 310037403 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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