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1X1X1/4 XH 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:
- 1
- Size 3:
- 0.25
- Strength:
- XH
- 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:
- 1.09 lbs
ASC Engineered Solutions 310521802 – Frequently Asked Questions
1) What size openings does the ASC 1 x 1 x 1/4 black malleable iron tee have?
It's a reducing tee: both run ends are 1 inch and the branch outlet is 1/4 inch. All three openings are female pipe thread (FPT), so it takes male threaded pipe or nipples on every port. The common use is picking up a 1/4 inch gauge, sensor, or drain tap off a 1 inch line without breaking down to a bushing.
2) Will this tee thread onto standard NPT pipe?
Yes. Threads are cut to ASME B1.20.1, which is the standard NPT taper thread spec, so it mates with ordinary threaded steel or brass pipe and nipples. Dope or tape the male threads as usual.
3) What does XH mean on a malleable iron tee, and when do I need it instead of standard?
XH is extra heavy, a thicker wall class carrying a higher pressure rating than the standard (150) class fitting of the same size. Dimensions and pressure class both follow ASME B16.3. Reach for XH when the line spec calls for a 300 class malleable fitting or the service pressure exceeds what standard black fittings are rated for; for ordinary low pressure gas or air runs, the standard class is the usual choice.
4) Is this tee UL Listed and FM Approved for fire sprinkler work?
Yes, the fitting carries UL/FM recognition, so it can be used where the sprinkler spec requires listed and approved threaded fittings. Confirm the branch size suits the application before ordering.
5) Can I use a black malleable iron tee on a potable water line?
No. Black malleable iron is for gas, air, steam, and fire protection service. On potable water it corrodes and stains, and it isn't the material for that duty. Use galvanized, copper, brass, or PEX on domestic water instead.
6) What material spec does this ASC tee meet?
The casting is malleable iron to ASTM A-197, with fitting dimensions to ASME B16.3. Those are the two lines a submittal or an inspector typically wants on threaded black fittings, along with the B1.20.1 thread callout.
7) Do I still need a reducing bushing with a 1 x 1 x 1/4 tee?
No, and that's the point of it. The 1/4 inch branch is cast into the fitting, so a 1/4 inch nipple or gauge threads straight in. Using a full 1 x 1 x 1 tee plus a 1 to 1/4 bushing gets you the same outlet but adds a joint and more takeout length.
8) How much does this 1 inch extra heavy tee weigh?
1.09 lbs each. Useful if you're figuring hanger spacing or pricing out a freight-weighted order of a few hundred fittings.
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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 310521802 come with a warranty?
Absolutely. The ASC Engineered Solutions 310521802 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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