Nibco 5133-3 FKM Female Adapte...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$62.36
Nibco 5133-3 FKM Female Adapter Union S x FPT - Corzan® CPVC Schedule 80

Nibco 5133-3 FKM Female Adapter Union S x FPT - Corzan® CPVC Schedule 80

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Model: CB18662

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

$62.36
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The light grey Corzan® CPVC adapter union features a female socket and a female NPT thread connections. This fitting has an FKM fluorocarbon seal which is suited to most applications involving mineral acids, salt solutions, chlorinated hydrocarbons and petroleum oils. 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. 1859
  • Female socket connection and female NPT thread connections
  • 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 Unions
End Connection:
Threaded
Pipe Schedule:
80
Plastic End Connection Type:
S x F (NPT)
Product Group:
Fitting
Product Type:
CPVC Sch 80 Unions
Seat Seal Material:
FKM Fluoroelastomer
System Use:
Commercial Plumbing, Industrial, Irrigation, Lead Free*
Product Subgroup:
Union
Department:
Plumbing
Product Color:
Light Grey
Country of Origin:
United States

Nibco CB18662 – Frequently Asked Questions

1) What do the two ends of the Nibco 5133-3 CPVC union connect to?
The 5133-3 is an S x F (NPT) adapter union: one side is a solvent-weld socket that cements over Schedule 80 CPVC pipe, the other is female NPT thread that takes a male threaded pipe or nipple. That makes it the transition point between a glued plastic run and a threaded connection, with a union nut so you can break the joint later without cutting pipe.
2) Is the FKM seal on this Corzan CPVC union right for acids and chlorinated chemicals?
The FKM fluoroelastomer seal handles most mineral acids, salt solutions, chlorinated hydrocarbons and petroleum oils, which is why it is specified over EPDM on chemical feed and industrial process lines. FKM is not universal though, so check the fluid against Chemtrol's chemical resistance data before you commit the line.
3) How hot can a Corzan CPVC Schedule 80 union run?
Maximum service temperature is 210 degrees F. That is the headline reason to pick CPVC over PVC on a hot line, since PVC tops out well below that. Pressure rating falls off as temperature climbs, so a line near the top of that range needs to be de-rated.
4) Can I use this CPVC union on potable water in a commercial building?
It is a lead-free fitting certified to NSF/ANSI Standard 14 and NSF/ANSI/CAN 61, the listings inspectors look for on potable water. It also carries ASTM F1970, the standard covering special-engineered fittings for pressure-rated plastic systems. Listed uses run commercial plumbing, industrial, and irrigation.
5) Can I air test a CPVC Schedule 80 line built with these unions?
No. Do not use or test this fitting with compressed air or other gases. Thermoplastic pressure systems are hydrostatically tested with water; a pneumatic test on CPVC stores enough energy to shatter a fitting. This is the single most common way crews damage a new plastic line.
6) What pipe sizes does the Nibco 5133-3 CPVC adapter union come in?
Seven sizes: 1/2, 3/4, 1, 1-1/4, 1-1/2, 2 and 3 inch. Size the union to the pipe, not the fitting body, and order the matching part number, for example CB18662 for 1 inch or CB18665 for 2 inch.
7) Will this union thread onto metal pipe, or do I need a different fitting?
The FPT end accepts a male NPT thread, including a metal nipple, but treat the plastic side as the weak link: thread it hand tight plus a modest turn with PTFE tape and do not over-torque, since a plastic female thread splits from wedging before it leaks. No thread sealant is needed or used on the socket side, which is solvent cemented to Schedule 80 CPVC pipe.
8) Why use a union here instead of a plain CPVC female adapter?
A plain female adapter glues in permanently. The 5133-3 is a three-piece union, so the nut backs off and the joint separates for pump, valve, strainer or meter service without cutting and re-gluing the line. On anything you expect to pull out again, put the union at the equipment.
9) Will a light grey Corzan CPVC fitting match my existing CPVC piping?
Corzan CPVC Schedule 80 is light grey, the standard industrial CPVC color, so it matches grey Schedule 80 CPVC runs. It will not match tan or cream CPVC, which is the CTS hot and cold water product, and it will not match white Schedule 40 PVC. Confirm you are working with Schedule 80 IPS pipe before ordering.
10) Does CPVC need corrosion protection like steel pipe does?
No. Corzan CPVC will not rust, scale, pit or corrode, so there is no painting, lining or cathodic protection to maintain. It is also light enough to handle without lifting gear, which is why MRO and facility crews move to it on chemical and treated-water lines that eat galvanized.
How fast can I get the Nibco CB18662 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 CB18662 come with a warranty?
Absolutely. The Nibco CB18662 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 CB18662?
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
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