You may also like
1X3/4 BLK MI 90 ELL
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:
- 0.75
- Strength:
- STD
- Thread Specification:
- ASME B1.20.1
- Ul Fm:
- Yes
- Department:
- Plumbing
- Product Group:
- Pipe Fittings
- Product Subgroup:
- Elbows
- Product Type:
- 90° Elbow
- Product Finish:
- Black
- Product Material:
- Malleable Iron
- Product Weight:
- 0.56 lbs
ASC Engineered Solutions 310008404 – Frequently Asked Questions
1) Is the ASC 1 x 3/4 black malleable iron 90 elbow a reducing fitting, and which end is which?
It's a reducing 90 degree elbow: one end is 1 inch, the other is 3/4 inch, so it turns the corner and steps the line size down in one fitting. Both ends are female pipe thread (FPT), so it takes male threaded pipe nipples or threaded pipe ends on both sides. No separate bushing needed to make the size change.
2) Will this black iron elbow thread onto standard NPT pipe?
Yes. The threads are made to ASME B1.20.1, which is the standard NPT taper thread spec, so it mates with ordinary threaded black pipe and nipples from any manufacturer. Use pipe dope or PTFE tape on the male threads as usual.
3) Can I use a black malleable iron elbow on a potable water line?
No. Black malleable iron fittings are for gas, fuel oil, air, and fire protection service, not potable water, since the uncoated black finish rusts in a wet oxygenated line. For domestic water use galvanized malleable iron, copper, or PEX instead. This fitting is black finish malleable iron.
4) Is this elbow approved for fire sprinkler piping?
It carries UL/FM recognition, which is what an AHJ looks for on fire protection pipe fittings. It's a Class 150 standard pattern fitting dimensioned and pressure rated to ASME B16.3. Confirm the fitting class matches the working pressure on your sprinkler drawings.
5) What is the difference between a standard and an extra heavy malleable iron elbow?
Standard pattern (Class 150) is the common weight used for gas, air, and general threaded pipe work, and that's what this 1 x 3/4 elbow is. Extra heavy (Class 300) has thicker walls and a higher pressure rating for heavier service. If your spec calls out Class 300, this fitting won't meet it.
6) Does this fitting meet a spec calling for ASTM A197 malleable iron?
Yes, the casting is made to ASTM A-197, the cupola malleable iron standard, with dimensions per ASME B16.3. Between the material spec, the dimensional standard, and NPT threads to ASME B1.20.1, it satisfies the usual three callouts on a mechanical or plumbing drawing for black malleable fittings.
7) Do I still need a reducing bushing with this elbow?
No. Because the elbow is already 1 inch on one end and 3/4 inch on the other, the size change happens inside the fitting. Adding a bushing would only be needed if you had to go to a third size. Both openings are female threaded, so you're threading male pipe or nipples straight in.
8) What is the part number and weight on the ASC 1 x 3/4 black 90 elbow for ordering and freight?
Order it as ASC Engineered Solutions MPN 310008404. Each fitting weighs 0.56 lbs, which is useful if you're building out a pallet count or a job material takeoff for a run of them.
How fast can I get the ASC Engineered Solutions 310008404 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 310008404 come with a warranty?
Absolutely. The ASC Engineered Solutions 310008404 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 310008404?
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 310008404 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.