Nibco 5151-H Socket Flange - C...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$24.94
Nibco 5151-H Socket Flange - Corzan® CPVC Schedule 80, One-Piece Solid Design

Nibco 5151-H Socket Flange - Corzan® CPVC Schedule 80, One-Piece Solid Design

(No reviews yet) Write a Review

Model: CB18800

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

$24.94
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like
The light grey Corzan® CPVC socket flange features a one-piece solid design and a female socket connection. Chemtrol® CPVC fittings are lightweight, easy to install and maintenance-free. Chemtrol® fittings connect piping lengths together with solvent cementing, threading or flanging to create a highly reliable, leak-free system. Please refer to Chemtrol technical data sheets, chemical resistance guides and catalogs for engineering and installation information. Corzan® CPVC Schedule 80 thermoplastics demonstrate excellent mechanical strength over broad temperature range, outstanding underground performance and superior hydraulics. Chemtrol Corzan® CPVC fittings are lightweight, easy to install, maintenance-free and will not rust, scale, pit or corrode. Chemtrol® premium line of plastic fittings is backed by a 1-year limited warranty. Because Chemtrol® is a NIBCO brand the flow-control fittings are unsurpassed in quality, performance and longevity.

  • Maximum service temperature 210-DegreeF
  • Universal Part No. 1851
  • One-piece solid design
  • Female socket connections and flange connections compatible with ANSI B16.5 Class 150
  • Do not use or test with compressed air or other gases
  • ASTM F1970
  • NSF/ANSI Standard 14
  • NSF/ANSI/CAN-61

Manufacturer Resources

Product Specs

All Application(s):
Lead-Free
All Basic Material:
CPVC - Chlorinated Polyvinyl Chloride
Classification:
CPVC Sch 80 Flanges
End Connection:
Socket Weld
Pipe Schedule:
80
Plastic End Connection Type:
S Socket
Product Group:
Fitting
Product Type:
CPVC Sch 80 Flanges
System Use:
Commercial Plumbing, Industrial, Irrigation, Lead Free*
Product Subgroup:
Flange
Department:
Plumbing
Product Color:
Light Grey
Country Of Origin:
United States

Nibco CB18800 – Frequently Asked Questions

1) How does the 5151-H flange connect to the pipe - is it threaded or solvent welded?
It's a socket connection, not threaded. The hub is a female S socket that slips over Schedule 80 CPVC pipe and is joined with CPVC solvent cement. If your run is threaded, you need a threaded-hub flange instead, or a socket x thread transition adapter ahead of this one.
2) What temperature can a Corzan CPVC Schedule 80 flange handle?
Maximum service temperature is 210 degrees F. That is the headline reason to use CPVC over standard PVC on hot process or hot water lines. Remember that pressure rating on any thermoplastic falls off as temperature climbs, so derate for your operating temperature.
3) Can I use this CPVC flange on potable water in a commercial building?
Yes. The Corzan CPVC socket flange is listed to NSF/ANSI Standard 14 and NSF/ANSI/CAN 61, and is classed lead-free, which is what a plumbing inspector looks for on potable service. It is also used on industrial process and irrigation lines.
4) Can I pressure test this CPVC flange with compressed air?
No. Do not use or test the flange or the CPVC system with compressed air or other gases. Hydrostatic test only. Air testing thermoplastic piping stores energy in the line and a failure is violent.
5) What pipe sizes does the Nibco 5151-H CPVC socket flange come in?
Eleven sizes, 1/2 inch through 8 inch: 1/2, 3/4, 1, 1-1/4, 1-1/2, 2, 2-1/2, 3, 4, 6 and 8 inch. Order by size, for example CB18800 for 1 inch and CB19100 for 4 inch. All are Schedule 80, so the socket is sized for Sch 80 CPVC pipe OD.
6) Is the 5151-H a one-piece flange or a van stone with a loose backing ring?
One-piece solid design. The hub and the flange face are a single molding, so there is no rotating backing ring to line up bolt holes with. You have to clock the bolt holes before the cement sets, which matters when you are tying into a fixed pump or valve flange.
7) What is the difference between this CPVC flange and a standard PVC Schedule 80 flange?
Same Schedule 80 dimensions and the same ANSI B16.5 Class 150 bolt pattern, but the material is chlorinated PVC rather than PVC, which is what carries it to a 210 degree F maximum service temperature. The body is light grey rather than the dark grey typical of PVC Sch 80, so it is easy to tell apart on a jobsite. It also requires CPVC solvent cement, not PVC cement.
8) Does the Nibco 5151-H flange come with bolts and a gasket?
The flange is supplied on its own. Plan to order the gasket, bolts, nuts and washers separately, plus CPVC solvent cement and primer for the socket joint. Match the bolt count and hole size to ANSI B16.5 Class 150 for your pipe size.
9) Is this CPVC flange suitable for a buried or underground line?
Yes. Corzan CPVC Schedule 80 is used underground and the material will not rust, scale, pit or corrode, so it holds up in soils that attack metal pipe. Support and bed the flange joint properly so soil loading is not carried on the bolted connection.
10) What is the universal part number for the Nibco 5151-H flange?
It carries Universal Part No. 1851, and the Chemtrol/Nibco order numbers run by size, for example CB18700 in 1/2 inch, CB18950 in 2 inch and CB19200 in 8 inch. Distributors cross-referencing a takeoff should use those.
How fast can I get the Nibco CB18800 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 CB18800 come with a warranty?
Absolutely. The Nibco CB18800 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 CB18800?
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 CB18800 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.
!