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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:
- 3
- Size 2:
- 3
- 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:
- 3.4 lbs
ASC Engineered Solutions 311081608 – Frequently Asked Questions
1) Is this coupling a reducer or straight 3 inch by 3 inch?
Straight. Size 1 and Size 2 are both 3 inch and both ends are FPT, so it is a same-size coupling, not a reducing coupling. If you need to step down from 3 inch to a smaller line you need a reducing coupling or a bushing instead.
2) Is this ASC malleable iron coupling UL Listed and FM Approved for fire sprinkler work?
Yes, it carries UL/FM recognition, which is what an inspector looks for on a threaded fitting in a fire protection line. It is standard pattern (STD) malleable iron to ASTM A-197 with pressure rating per ASME B16.3.
3) Can I use a galvanized malleable iron coupling on a wet or outdoor line?
The galvanized finish is hot-dip to ASTM A-153, which is the coating spec for corrosion protection on threaded hardware, so it suits damp, outdoor, and wet sprinkler service better than a black iron fitting. It is a plumbing fitting for water, air, and non-corrosive gas or liquid lines, not for steam or chemical service.
4) Can I use this coupling on 3 inch copper or PVC?
No. Both ends are female NPT threads to ASME B1.20.1, meant for threaded steel or iron pipe. Copper needs a soldered or press fitting and PVC needs a solvent-weld socket, so you would need a threaded transition adapter on that side before this coupling is usable.
How fast can I get the ASC Engineered Solutions 311081608 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 311081608 come with a warranty?
Absolutely. The ASC Engineered Solutions 311081608 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 311081608?
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product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the ASC Engineered Solutions 311081608 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.