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31/2 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:
- 3.5
- 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:
- 3.19 lbs
ASC Engineered Solutions 318900925 – Frequently Asked Questions
1) What size pipe does the ASC Engineered Solutions black malleable iron cap thread onto?
It's a 3-1/2 inch cap with female pipe thread (FPT), so it screws onto the male threaded end of 3-1/2 inch pipe or a male fitting nipple. Threads are cut to ASME B1.20.1, the standard NPT thread spec, so it mates with any conforming 3-1/2 inch NPT male end.
2) What is the difference between a pipe cap and a plug for closing off a 3-1/2 inch line?
A cap is female threaded and goes over the outside of a male pipe end. This ASC cap is FPT, so it covers a male thread. A plug is male threaded and goes inside a female opening such as a coupling or a fitting port. Look at what your open end is: threaded male pipe takes the cap, a female socket takes a plug.
3) What material grade is the ASC 3-1/2 inch black cap made to?
Malleable iron produced to ASTM A-197, with dimensions and pressure class per ASME B16.3 in standard strength. That combination is the common spec callout on commercial and industrial threaded fitting submittals, so it matches most drawings that simply say malleable iron 150.
4) Do I need thread sealant with this cap?
Yes, threaded malleable iron joints are sealed at the threads, not by the fitting itself. The cap is cut to ASME B1.20.1 tapered pipe thread, which needs pipe dope or PTFE tape rated for the service, gas rated sealant on fuel gas lines. No gasket or O-ring is part of the connection.
5) How heavy is the 3-1/2 inch black malleable iron cap?
About 3.19 lbs each. Worth knowing if you are hanging a capped stub off an existing support, or estimating freight on a case quantity for a job.
6) What is the ASC Engineered Solutions part number for the 3-1/2 inch black cap?
Order it as ASC Engineered Solutions model 318900925, a 3-1/2 inch black malleable iron cap. That is the number to quote when matching an existing order or standardizing fittings across a facility.
How fast can I get the ASC Engineered Solutions 318900925 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 318900925 come with a warranty?
Absolutely. The ASC Engineered Solutions 318900925 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 318900925?
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 318900925 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.