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11/4 BLK MI CAP
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:
- STD
- 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:
- 0.58 lbs
ASC Engineered Solutions 318900644 – Frequently Asked Questions
1) Will this ASC 1-1/4 inch malleable iron cap thread onto standard 1-1/4 inch black steel pipe?
Yes. The ASC Engineered Solutions 1-1/4 inch black malleable iron cap has a female pipe thread (FPT) end cut to ASME B1.20.1, which is the standard NPT thread used on Schedule 40 black steel pipe. Screw it onto any male-threaded 1-1/4 inch pipe end or nipple to dead-end the line.
2) Can I use a black malleable iron cap on a domestic water line?
No. Black malleable iron is for non-potable service, typically gas, air, fire protection and closed-loop hydronic piping. For potable water you want a galvanized malleable iron or brass cap instead. The black finish here is an uncoated mill finish, not a corrosion barrier for wet potable service.
3) Does standard weight mean this cap is rated the same as the Schedule 40 pipe it screws onto?
The cap is standard weight (STD) malleable iron with its pressure rating governed by ASME B16.3, which is the class system that matches standard weight fittings to Schedule 40 threaded pipe. If your system is specified for extra heavy or Class 300 fittings, this standard weight cap is not the right part.
4) What part number do I order for the ASC 1-1/4 inch black malleable iron cap?
Order manufacturer part number 318900644 from ASC Engineered Solutions. It is the 1-1/4 inch black malleable iron cap, standard weight, female NPT.
5) Do I need pipe dope or PTFE tape with this cap?
Yes. The threads are tapered NPT to ASME B1.20.1, and tapered pipe threads seal on the thread flanks, so a thread sealant or PTFE tape is required for a leak-free joint. Use a sealant rated for the service in the line, gas rated dope for fuel gas.
How fast can I get the ASC Engineered Solutions 318900644 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 318900644 come with a warranty?
Absolutely. The ASC Engineered Solutions 318900644 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 318900644?
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 318900644 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.