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Manufacturer Resources
Product Specs
- Dimensions Specification:
- ASME B16.3
- End Conn Size 1:
- FPT
- End Conn Size 2:
- FPT
- Material Specification:
- ASTM A-197
- Pressure Rating Specification:
- ASME B16.3
- Size 1:
- 1
- Size 2:
- 1
- Strength:
- XH
- Thread Specification:
- ASME B1.20.1
- Ul Fm:
- Yes
- Department:
- Plumbing
- Product Group:
- Pipe Fittings
- Product Subgroup:
- Other Fittings
- Product Type:
- Fitting
- Product Finish:
- Black
- Product Material:
- Malleable Iron
- Product Weight:
- 0.99 lbs
ASC Engineered Solutions 310538806 – Frequently Asked Questions
1) What does XH mean on a 1 inch black malleable iron coupling?
XH is extra heavy, the heavier wall class of malleable iron fitting. It carries a higher pressure rating than a standard class fitting of the same size, with dimensions and pressure ratings both to ASME B16.3. Contractors specify XH where the drawing calls for extra heavy fittings on higher pressure steam, air, or gas service.
2) Is this 1 inch coupling UL listed and FM approved for fire sprinkler piping?
Yes, the ASC Engineered Solutions 1 inch extra heavy black malleable iron coupling is UL/FM rated, so it can be used where the fire protection submittal requires listed and approved fittings on 1 inch threaded branch lines.
3) Can I use a black malleable iron coupling on a domestic water line?
No. Black malleable iron is for gas, air, steam, fire protection, and similar non-potable service. The black finish is an uncoated mill finish with no corrosion protection, so it rusts in wet potable service. Use galvanized malleable iron, copper, or brass on domestic water instead.
4) Does this coupling meet the ASTM material callout on my spec sheet?
The casting is malleable iron to ASTM A-197, with dimensions and pressure class to ASME B16.3 and NPT threads to ASME B1.20.1. That is the standard set most mechanical specs and fire protection submittals cite for threaded malleable iron fittings.
5) Is this a straight coupling or a reducing coupling?
Straight. Both ends are 1 inch, so it joins two 1 inch pipe ends at the same size. If you need to step down from 1 inch to a smaller pipe, order a reducing coupling or a bushing instead.
How fast can I get the ASC Engineered Solutions 310538806 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 310538806 come with a warranty?
Absolutely. The ASC Engineered Solutions 310538806 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 310538806?
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selection,
installation tips, and troubleshooting. Contact Us
Why buy the ASC Engineered Solutions 310538806 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.