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Manufacturer Resources
Product Specs
- Buy American Act Compliant:
- No
- Department:
- Plumbing
- Product Group:
- Plumbing
- Product Subgroup:
- Valves
- Product Type:
- General Valve
Watts NH-BL-4-45E – Frequently Asked Questions
1) What pipe size and connection type does the Watts NH-BL-4-45E elbow use?
It is a 4 inch fitting with no-hub (hubless) ends, so it joins to 4 inch no-hub pipe using no-hub couplings with a clamp band, not solvent weld or threaded connections. The bend is 45 degrees.
2) Does the Watts NH-BL-4-45E meet Buy American Act requirements for a federal or public project?
No. The NH-BL-4-45E is listed as not Buy American Act compliant, so on a federally funded job with a BAA or Build America clause you will need a domestically sourced fitting instead.
3) Can I use a 45 degree no-hub elbow instead of a 90 to change direction in a drain line?
Two 45s make a sweeping offset that keeps flow moving better than a hard 90, which is why the NH-BL-4-45E is the common choice for offsets and for easing a horizontal run around an obstruction. Use a 90 where you need a tight turn, typically at a stack base or a stub-out, and follow whatever your local drainage code allows for horizontal turns.
4) Do no-hub couplings come with the Watts Blueline 4 inch 45 degree elbow?
The NH-BL-4-45E is the fitting only. Each joint needs its own no-hub coupling with a stainless shield and clamp bands, so order two couplings per elbow and size them for 4 inch.
5) How do I confirm I am ordering the right Watts 4 inch no-hub 45 elbow?
Order by part number NH-BL-4-45E. That designation breaks down as no-hub, Blueline, 4 inch, 45 degree elbow, so if your takeoff calls for a different size or a 1/8 bend in another degree the number will not match.
How fast can I get the Watts NH-BL-4-45E 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 Watts NH-BL-4-45E come with a warranty?
Absolutely. The Watts NH-BL-4-45E 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 Watts NH-BL-4-45E?
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 Watts NH-BL-4-45E 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.