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Manufacturer Resources
Product Specs
- Dimensions Specification:
- ASME B16.3
- End Conn Size 1:
- FPT
- Material Specification:
- ASTM A-197
- Pressure Rating Specification:
- ASME B16.3
- Size 1:
- 1.25
- Size 2:
- 0
- Strength:
- XH
- Thread Specification:
- ASME B1.20.1
- Ul Fm:
- Yes
- Department:
- Plumbing
- Product Group:
- Pipe Fittings
- Product Subgroup:
- Caps
- Product Type:
- Cap
- Product Finish:
- Black
- Product Material:
- Malleable Iron
- Product Weight:
- 1.04 lbs
ASC Engineered Solutions 318901360 – Frequently Asked Questions
1) Will this ASC Engineered Solutions 1-1/4 inch black cap thread onto standard 1-1/4 inch black steel pipe?
Yes. The cap is a 1-1/4 inch female NPT fitting, threaded to ASME B1.20.1, so it screws onto the male threaded end of standard 1-1/4 inch black iron or steel pipe. No adapter needed if your pipe end is cut and threaded NPT.
2) Is this pipe cap approved for fire sprinkler piping?
It carries UL/FM approval, so it can be used on fire protection piping where a UL Listed, FM Approved malleable iron fitting is called for. It is a black finish extra heavy cap in 1-1/4 inch, which is the class typically specified for sprinkler mains and drops.
3) Can I use this black malleable iron cap on a water line?
Black malleable iron is for dry or non-corrosive service such as gas, air, fire sprinkler, and steam piping. For potable or wet water lines, use a galvanized fitting instead, since the black finish has no zinc coating to resist corrosion.
4) What standards does this 1-1/4 inch malleable iron cap meet?
Three cover it: ASME B16.3 for dimensions and pressure class, ASTM A-197 for the malleable iron material, and ASME B1.20.1 for the threads. That combination is what most mechanical and plumbing specs call out for a malleable iron threaded fitting, so it drops straight into a B16.3 spec line.
5) What is the part number and weight for the ASC 1-1/4 inch extra heavy black cap?
Order it as ASC Engineered Solutions model 318901360. Each cap weighs 1.04 lbs, which is worth knowing when you are pricing freight on a full box for a sprinkler or gas rough-in.
6) Do I need a union or can I just cap a threaded pipe end with this?
This is a straight female threaded cap, so it closes a male pipe end permanently until someone backs it off with a wrench. Use pipe dope or PTFE tape on the male threads. If the line needs to be opened routinely, a plug in a tee or a union is a better detail than a cap on the pipe end.
How fast can I get the ASC Engineered Solutions 318901360 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 318901360 come with a warranty?
Absolutely. The ASC Engineered Solutions 318901360 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 318901360?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the ASC Engineered Solutions 318901360 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.