Nibco 705 Baseboard Tee C x F ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$167.76
Nibco 705 Baseboard Tee C x F x C - Cast

Nibco 705 Baseboard Tee C x F x C - Cast

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Model: B039000

In Stock (leaves warehouse same day if ordered before 3pm ET)

$167.76
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The baseboard tee features two solder cups and an FNPT outlet. The fitting provides a means of attaching a 1/8-inch vent to the system to bleed out air. Please refer to NIBCO technical data sheets and catalogs for engineering and installation information. In addition to its inherent qualities of beauty, durability and low maintenance, copper's reusability makes it an ideal application in sustainable projects. NIBCO® copper fittings are manufactured in an ISO 9001 certified facility, and backed by a 50-year limited warranty. Because of its longstanding reputation for innovation and precision in design and manufacturing, NIBCO is the preferred brand in the industry.

  • Dezincification resistant
  • Use in U.S. drinking water applications is prohibited after January 3, 2014
  • ASTM B584 Alloy C84400
  • Material and workmanship per ASME B16.18

Copper Fittings Installation Instructions

Manufacturer Resources

NIBCO Copper Fittings Catalog

Product Specs

All Basic Material:
Bronze
Classification:
Solder Pressure Tees
End Connection:
Threaded
Metal End Connection Type:
C x F x C
Product Group:
Fitting
Product Type:
Solder Pressure Tees
System Use:
Commercial Plumbing, Fire Protection, Heating, HVAC, Industrial, Irrigation, Residential Plumbing
Type of Tee:
Baseboard;Threaded
Product Subgroup:
Tee
Department:
Plumbing

Nibco B039000 – Frequently Asked Questions

1) What is a baseboard tee used for on a hydronic heating loop?
The Nibco 705 baseboard tee has two solder cups and a female NPT branch outlet, and the branch is there to take a 1/8 inch vent so you can bleed air out of the system. On a fin-tube baseboard loop it goes at the high point of the run where air collects, and you thread an air vent into the center tap rather than running supply through it.
2) What size Nibco 705 baseboard tee do I need for 3/4 inch copper baseboard?
For 3/4 inch copper the 705 comes as 3/4 x 1/8 x 1 inch. The full size range is 1/2 x 1/8 x 3/4, 3/4 x 1/8 x 1, 1 x 1/8 x 1, and 1-1/4 x 1/8 x 1-1/4 inch. The center figure is always the 1/8 inch threaded vent tap; the two outer figures are the solder cup sizes, so on the smaller two sizes the run reduces or expands across the tee.
3) Can I use the Nibco 705 baseboard tee on potable water?
No. Use of this fitting in U.S. drinking water applications is prohibited after January 3, 2014. It is a cast bronze fitting in ASTM B584 alloy C84400, which is not a lead-free potable alloy. Keep it on closed-loop hydronic heating and other non-potable service.
4) How do the ends connect - is the Nibco 705 soldered or threaded?
Both. The configuration is C x F x C: the two run ends are solder cups that sweat onto copper tube, and the center branch is female threaded for a 1/8 inch NPT vent. You solder the run first and thread the vent in after, so the packing in the vent is not cooked by the torch.
5) Is this baseboard tee dezincification resistant?
Yes. The 705 is a cast bronze fitting made to ASTM B584 alloy C84400 and is dezincification resistant, which matters on heating and closed-loop systems where water chemistry can strip zinc from lesser brass over time. Material and workmanship follow ASME B16.18.
6) Do I get an air vent with the Nibco 705 baseboard tee?
No vent is included. The tee just gives you the 1/8 inch FNPT tap; you order the air vent separately, plus solder, flux, and 1/8 inch pipe dope or tape for the threaded joint.
7) What systems is the Nibco 705 tee approved for besides baseboard heat?
Nibco lists it for commercial plumbing, fire protection, heating, HVAC, industrial, irrigation, and residential plumbing. The drinking water restriction still applies, so on plumbing work it belongs on non-potable lines only.
8) What is the Nibco part number for the 1-1/4 inch baseboard tee?
The 1-1/4 x 1/8 x 1-1/4 inch size is MPN B039000. The others are B038550 (1/2 x 1/8 x 3/4), B038750 (3/4 x 1/8 x 1), and B038900 (1 x 1/8 x 1).
How fast can I get the Nibco B039000 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 Nibco B039000 come with a warranty?
Absolutely. The Nibco B039000 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 Nibco B039000?
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 Nibco B039000 from ZenSupply?
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