What Adapter For

How to connect CPVC to copper pipe

Use a push-to-connect coupling, with no soldering, or a CPVC x brass threaded transition fitting screwed to a brass adapter on the copper.

What fits

A push-to-connect coupling, or a CPVC x brass threaded transition fitting

On the package: Push-to-connect coupling in your pipe’s size

copper-tube-size CPVC (ASTM D2846) is the same size as copper

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Push-to-connect coupling, copper, PEX and CPVC CPVC x brass transition fitting

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  • Shut the water off and drain the line before you cut anything.
  • Push-to-connect: the standard fittings take copper and copper-tube-size CPVC in any combination. Deburr the CPVC’s cut end before pushing it in.
  • Threaded: glue a CPVC x brass threaded transition fitting onto the CPVC, and screw it to a brass threaded adapter soldered onto the copper. Solder that adapter before gluing the CPVC. Brass transition fittings suit hot and cold water. A plastic male adapter screwed into metal is for cold water only.
  • Tighten plastic threads with a strap wrench, no more than two turns past finger tight.

CPVC is glued and copper is soldered or pressed, so neither joint works on the other pipe.

More: Connecting different pipe

Common questions

What if my CPVC is Schedule 40 or Schedule 80?

Read the print on the pipe. SharkBite's tan-collar fittings fit copper-tube-size CPVC, the kind made to ASTM D2846. Its white-collar PVC fittings, such as the CTS x PVC transition coupling, also fit Schedule 40 and 80 CPVC.

How hot can the water be at this joint?

SharkBite rates its fittings on CPVC to the pipe's own limit, and Charlotte Pipe rates its FlowGuard Gold CTS CPVC for water up to 180°F at 100 psi.

Keep going

Connecting different pipePEX to copperSharkBite fittingsWhat pipe do I have?Is it 1/2" or 3/4"?Garden hose to 1/2" pipeGarden hose to 3/4" pipe

For a different part on either end, open the adapter finder with this pair picked.

Where we get our information from

The sizes on this page come from published standards and the makers’ own documents. Checked against published data from SharkBite and Charlotte Pipe.

See all 6 sources
  • SharkBite (Reliance Worldwide), SharkBite Installation Guide (2020): pipe insertion depth table, integral PEX stiffener
  • SharkBite (Reliance Worldwide), Push-to-Connect Installation Guide (pocket guide): stiffeners, transition fittings, warnings
  • Reliance Worldwide, SharkBite PVC Fittings Sales & Specifications Sheet (2015): white collar fits Schedule 40, 80 and 120 PVC
  • SharkBite (Reliance Worldwide), SharkBite PEX Installation Guide (2021): fits copper, CTS CPVC and PEX in any combination
  • Charlotte Pipe, Plastics Technical Manual (2026): PVC and CPVC colors, standards, temperature limits, Not for Pressure print, plastic-to-metal threads and brass transition fittings
  • Charlotte Pipe, FlowGuard Gold CTS CPVC submittal and product page: ASTM D2846, 180 F, solvent cement

General guidance from manufacturer and standards data. Parts vary by brand, so check the size printed on the package against what you measured. For gas lines or anything inside a wall, use a licensed plumber.