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4X21/2 BLK MI REDUCER
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:
- 4
- Size 2:
- 2.5
- Strength:
- STD
- Thread Specification:
- ASME B1.20.1
- Ul Fm:
- Yes
- Department:
- Plumbing
- Product Group:
- Plumbing Fittings
- Product Subgroup:
- Reducers
- Product Type:
- Reducer
- Product Finish:
- Black
- Product Material:
- Malleable Iron
- Product Weight:
- 5.93 lbs
ASC Engineered Solutions 310092804 – Frequently Asked Questions
1) What size pipe does the ASC 4 x 2-1/2 black malleable iron reducing coupling connect?
It joins 4 inch pipe down to 2-1/2 inch pipe. Both ends are female pipe thread (FPT), so it threads onto male-threaded pipe ends or nipples on each side. Threads are cut to ASME B1.20.1 (NPT), which is the standard taper thread on black iron pipe, so it mates with standard threaded steel or iron pipe.
2) Is this black malleable iron reducer UL Listed and FM Approved for a fire sprinkler main?
Yes, the 4 x 2-1/2 black malleable iron reducer carries UL/FM recognition, which is what a sprinkler contractor needs for threaded fittings on a wet or dry system. It is standard pattern (STD) malleable iron made to ASTM A-197, with pressure ratings and dimensions per ASME B16.3.
3) Can I use a black malleable iron reducer on a potable water line?
No. Black malleable iron is for non-potable service: gas, fire protection, compressed air, and closed-loop hydronic heating. It has no protective coating, so water service corrodes it and it is not the fitting for domestic water. For potable lines use copper, CPVC, PEX, or brass fittings instead. If the line is underground or damp but still non-potable, galvanized malleable iron is the usual alternative to this black finish.
4) What pressure class is this 4 x 2-1/2 malleable iron reducer, and does it match Class 150 pipe fittings on my system?
It is standard pattern (STD), which is the Class 150 malleable iron line in ASME B16.3, the same pattern as the ordinary black iron couplings, elbows and tees already on most threaded systems. Pressure ratings and face-to-face dimensions follow ASME B16.3, and the castings meet ASTM A-197. If your drawing calls for extra heavy (Class 300) fittings, this is not the right one.
5) Do I need pipe dope or PTFE tape with this fitting, or does it seal on its own?
It needs a thread sealant. The ends are NPT taper threads to ASME B1.20.1, which seal on thread interference plus a sealant or tape, not on a gasket or O-ring. Use a sealant rated for whatever the line carries, gas or water, and keep it off the first thread or two.
How fast can I get the ASC Engineered Solutions 310092804 delivered?
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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 310092804 come with a warranty?
Absolutely. The ASC Engineered Solutions 310092804 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 310092804?
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