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3/8 BLK MI WYE
Manufacturer Resources
Product Specs
- Dimensions Specification:
- ASME B16.3
- End Conn Size 1:
- FPT
- End Conn Size 2:
- FPT
- End Conn Size 3:
- FPT
- Material Specification:
- ASTM A-197
- Pressure Rating Specification:
- ASME B16.3
- Size 1:
- 0.375
- Size 2:
- 0.375
- Size 3:
- 0.375
- Strength:
- STD
- Thread Specification:
- ASME B1.20.1
- Ul Fm:
- Yes
- Department:
- Plumbing
- Product Group:
- Pipe Fittings
- Product Subgroup:
- Other Fittings
- Product Type:
- Fitting
- Product Finish:
- Black
- Product Material:
- Malleable Iron
- Product Weight:
- 0.27 lbs
ASC Engineered Solutions 310066402 – Frequently Asked Questions
1) What size pipe does the ASC Engineered Solutions 3/8 black malleable iron wye fit?
All three openings are 3/8 inch female pipe thread (FPT), so it takes 3/8 inch threaded pipe or nipples on every branch. It is a straight-size wye, not a reducing one, so you cannot run a larger main into it without adapting first.
2) Can I use a black malleable iron wye on a water line?
Black malleable iron is for gas, air, steam, and dry service, not potable water. The black finish has no corrosion protection, so on wet service it rusts from the inside. For water you want galvanized, brass, or copper instead. Black iron wyes like this one are usually going into fuel gas or compressed air piping.
3) What is the difference between a wye and a tee in black iron pipe?
A tee brings the branch in at 90 degrees; a wye brings it in at an angle, so flow from the branch merges with the run instead of hitting it head on. That means less turbulence and pressure drop where two lines combine. If you just need a right angle takeoff on a 3/8 line, a standard 3/8 black malleable tee is the cheaper and more common part.
4) Is this 3/8 wye rated for standard pressure, and what standard covers it?
It is a standard (STD) class fitting with dimensions and pressure rating to ASME B16.3, the standard for threaded malleable iron fittings. The casting itself is made to ASTM A-197. If your drawing calls for a 300-class or extra-heavy malleable fitting, this is not it.
5) Is this ASC wye fitting UL listed and FM approved?
Yes, the 3/8 black malleable iron wye carries UL/FM recognition, which matters if it is going into piping that an inspector or insurer has to sign off on.
6) Do I need a union anywhere when installing a threaded wye like this?
Usually yes. Every end on this wye is female NPT, and threaded fittings tighten in one direction only, so you cannot close a loop or drop the last leg into place without a union or a ground joint somewhere in the run. Plan the makeup order before you start threading.
7) What does ASTM A-197 mean for a malleable iron fitting?
A-197 is the cupola malleable iron casting spec used for threaded pipe fittings. Unlike gray cast iron, malleable iron has real ductility, so it tolerates thread engagement and vibration without cracking. That is why it is the standard material for screwed black iron gas and air fittings.
8) How much does the 3/8 black malleable wye weigh for a takeoff or freight estimate?
Each 3/8 wye weighs 0.27 lbs. Handy if you are pricing out a pallet of small fittings or building a material list.
9) What is the ASC part number for the 3/8 black malleable iron wye?
Order it as ASC Engineered Solutions part 310066402. That is the manufacturer number to quote when matching it against a spec or an existing bill of material.
How fast can I get the ASC Engineered Solutions 310066402 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 310066402 come with a warranty?
Absolutely. The ASC Engineered Solutions 310066402 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 310066402?
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