The light grey Corzan® CPVC blind flange features a one-piece webbed design. 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. 1853
- One-piece webbed design
- Flanged end 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:
- Blind
- 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 CB14816 – Frequently Asked Questions
1) Will the Nibco 5119-W blind flange bolt up to my existing ANSI 150 lb flange?
Yes. The 5119-W blind flange has flanged end connections compatible with ANSI B16.5 Class 150 bolt patterns, so it mates to standard 150 lb drilled companion flanges in 2, 3, 4 and 6 inch sizes. Use a full-face gasket and torque the bolts in a cross pattern to avoid cracking the CPVC.
2) What is the maximum temperature for a Corzan CPVC Schedule 80 blind flange?
Maximum service temperature is 210 F. That is the headroom CPVC gives you over PVC, which is why Corzan Schedule 80 gets specified on hot process and hot water lines. Pressure rating derates as temperature climbs, so size the system from the Chemtrol technical data for the operating temperature you actually run.
3) Is this blind flange socket weld or threaded?
Socket weld on the pipe side. The 5119-W is solvent cemented to Schedule 80 CPVC pipe, not threaded, so you need CPVC primer and CPVC solvent cement rated for the pipe size. Do not substitute PVC cement. If your line is threaded, you need a threaded-style flange instead.
4) Can I use this CPVC flange on a potable water system?
Yes. The Chemtrol Corzan CPVC blind flange is certified to NSF/ANSI Standard 14 and NSF/ANSI/CAN 61, and is listed as a lead-free application, which is what a potable water spec calls for. It also carries ASTM F1970 for excess flow and temperature performance.
5) Can I pressure test this CPVC flange with compressed air?
No. Chemtrol CPVC fittings are not to be used or tested with compressed air or other gases. Hydrostatic test only. Air testing thermoplastic pressure fittings risks sudden brittle failure, and it voids the manufacturer's use instructions.
6) Wait, a blind flange with a socket? How does this actually get used?
The 5119-W is catalogued with a blind plastic end connection, meaning the face is closed off to dead-end a flanged connection or cap a vessel or header nozzle. The socket weld reference covers the CPVC joining method used across the Chemtrol Schedule 80 flange line. Practically, you bolt the blind face to a mating Class 150 flange to close the run, and unbolt it later for access or future tie-in, which is the advantage over solvent cementing a cap on.
7) What sizes does the Nibco 5119-W blind flange come in, and what are the part numbers?
Four sizes: 2 inch (CB14816), 3 inch (CB14820), 4 inch (CB14825) and 6 inch (CB14830). Order to the nominal pipe size of the Schedule 80 CPVC line you are dead-ending.
8) Is a CPVC blind flange suitable for an industrial chemical line or just plumbing?
System use covers commercial plumbing, industrial and irrigation service. Corzan CPVC resists rust, scale, pitting and corrosion, which is why it goes into chemical and process work, but chemical suitability depends on the specific media and temperature. Check the Chemtrol chemical resistance guide for your fluid before committing.
9) Do the bolts, nuts and gasket come with the Nibco 5119-W?
The 5119-W is the CPVC blind flange only. Bolts, nuts, washers and the full-face gasket are separate, and so is the CPVC primer and solvent cement for the socket joint on the mating flange. Size the bolt set to the ANSI B16.5 Class 150 pattern for your pipe size.
10) Will this grey CPVC flange match the rest of my Schedule 80 piping run?
The 5119-W is light grey, the standard color for Corzan CPVC Schedule 80. That distinguishes it from dark grey PVC Schedule 80 on the same jobsite, so it is easy to confirm on a walkthrough that the right material went in.
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Does the Nibco CB14816 come with a warranty?
Absolutely. The Nibco CB14816 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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