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1/2X1/2X3/4 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:
- 0.5
- Size 2:
- 0.5
- Size 3:
- 0.75
- 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:
- 0.8 lbs
ASC Engineered Solutions 310521000 – Frequently Asked Questions
1) On the ASC 1/2 x 1/2 x 3/4 black malleable iron tee, which opening is the 3/4 inch?
The two run ends are 1/2 inch and the branch outlet is 3/4 inch, so it's a bull-head tee: the outlet is larger than the run. All three openings are female pipe thread (FPT), cut to ASME B1.20.1, so it threads onto standard NPT male pipe ends and nipples.
2) What does XH mean on a black malleable iron tee, and is it the same as a standard 150 tee?
XH is extra heavy, the 300 class malleable iron pattern. It's a thicker wall and a higher pressure rating than the standard 150 class fitting, built to ASME B16.3 for both dimensions and pressure rating. It is not the same part as a 150 tee and it is heavier and bulkier at the hub, so if your spec calls for 300 class, a standard fitting won't substitute.
3) Can I use this black malleable iron tee on a potable water line?
No. Black malleable iron is for gas, air, steam, and closed-loop hydronic service, not potable water, where it will corrode and discolor the water. For domestic water use copper, PEX, CPVC, or galvanized. The black finish on this tee is the uncoated iron finish, not a protective plating.
4) Is this ASC tee acceptable for a fire sprinkler system?
It carries a UL/FM listing, so it is acceptable where a listed fitting is required, including fire protection piping. It is an extra heavy (300 class) malleable iron pattern made to ASME B16.3, with FPT threads to ASME B1.20.1 so it mates to threaded sprinkler pipe. Confirm the size and class against the approved submittal for your system.
5) What grade of iron is this tee made from?
It's malleable iron made to ASTM A-197, the standard cupola malleable iron spec for pipe fittings. That's the material grade a mechanical inspector will look for on a threaded black iron fitting, and it is what gives malleable iron its ductility compared with plain cast iron.
6) Can I reduce from 3/4 inch pipe into 1/2 inch with this tee instead of using bushings?
Yes, that's exactly what the 1/2 x 1/2 x 3/4 pattern does. Bring 3/4 inch into the branch outlet and run 1/2 inch out both sides of the run, with no bushings or reducing couplings needed. Because it's a bull-head configuration, watch your orientation when you lay it out: the large port is the branch, not part of the straight run.
7) Do I need pipe dope or tape on this fitting, and how much does one weigh for a material takeoff?
The threads are tapered NPT to ASME B1.20.1, which seals on thread engagement and needs a compatible sealant, dope or PTFE tape rated for the service, gas rated if you're running fuel gas. Each tee weighs 0.8 lbs, which is what you want for figuring hanger loads or a freight takeoff on a bulk order.
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Does the ASC Engineered Solutions 310521000 come with a warranty?
Absolutely. The ASC Engineered Solutions 310521000 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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