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Manufacturer Resources
Product Specs
- Dimensions Specification:
- ASME B16.3
- End Conn Size 1:
- FPT
- End Conn Size 2:
- FPT
- Finish Specification:
- ASTM A-153
- Material Specification:
- ASTM A-197
- Pressure Rating Specification:
- ASME B16.3
- Size 1:
- 1.25
- Size 2:
- 1.25
- Strength:
- STD
- Thread Specification:
- ASME B1.20.1
- Ul Fm:
- Yes
- Department:
- Plumbing
- Product Group:
- Pipe Fittings
- Product Subgroup:
- Couplings
- Product Type:
- Coupling
- Product Finish:
- Galvanized
- Product Material:
- Malleable Iron
- Product Weight:
- 0.76 lbs
ASC Engineered Solutions 311080808 – Frequently Asked Questions
1) Will this 1-1/4 inch galvanized malleable iron coupling thread onto standard steel pipe?
Yes. Both ends are 1-1/4 inch female pipe thread cut to ASME B1.20.1, which is standard NPT, so it mates with any 1-1/4 inch NPT male pipe end or nipple. Both openings are the same size, so it is a straight coupling, not a reducer.
2) Is this coupling approved for fire sprinkler piping?
It carries UL/FM approval, which is what an inspector looks for on fire protection piping. It is a standard (STD) pressure class malleable iron fitting built to ASME B16.3 for both dimensions and pressure rating.
3) Can I use a galvanized malleable iron coupling on a wet or outdoor line?
The galvanizing is a hot dip zinc coating to ASTM A-153, which is the spec used for corrosion protection on iron hardware, so it holds up better than black iron in damp or exposed service. The body itself is malleable iron to ASTM A-197. For potable water, verify your local code requirements for the material.
4) What is the difference between this galvanized coupling and a black malleable iron one?
Same fitting geometry and the same 1-1/4 inch NPT female threads; the difference is the zinc coating. Galvanized to ASTM A-153 is used on wet, outdoor, or fire protection lines, while black iron is the usual choice for dry gas and steam service. If the run you are tying into is already galvanized, stay galvanized to avoid mixing coatings.
5) What is the exact part number and shipping weight for this 1-1/4 inch coupling?
Order it as ASC Engineered Solutions model 311080808. Each fitting weighs 0.76 lbs, which matters if you are pricing out a large bill of material or figuring hanger loading on a long run.
6) Does a malleable iron coupling need thread sealant?
Yes. The tapered NPT threads on this fitting seal metal to metal but still need pipe dope or PTFE tape on the male pipe end, and no sealant is supplied with the coupling. Pick a sealant rated for the service you are piping.
How fast can I get the ASC Engineered Solutions 311080808 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
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 311080808 come with a warranty?
Absolutely. The ASC Engineered Solutions 311080808 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 311080808?
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selection,
installation tips, and troubleshooting. Contact Us
Why buy the ASC Engineered Solutions 311080808 from ZenSupply?
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and
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Our team is always ready to help you choose the right product for your project.