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The SIOUX CHIEF sc-685-c2 is a straight transition adapter designed to connect 1/2-inch CPVC pipe to a copper CTS press-fit fitting system. The lead-free (LF) construction makes it suitable for potable water applications where compliance with low-lead regulations is required. The CPVC side accepts standard 1/2-inch CPVC pipe, while the male CTS MetalHead press-fit end connects to compatible press-fit copper fittings without soldering. Plumbers and pipefitters install this adapter in residential and light commercial water distribution systems where mixed-material transitions are needed between CPVC runs and copper press systems.
This adapter is used in new construction and retrofit plumbing projects where a CPVC distribution line transitions to a copper press-fit connection point. It is well-suited for hot and cold potable water lines in residential buildings, multi-family units, and light commercial installations. The press-fit end eliminates the need for open flame at the transition point, which is an advantage in finished spaces or fire-sensitive environments.
Designed as an OEM-style transition adapter for 1/2-inch CPVC pipe systems connecting to copper CTS press-fit fitting networks in residential and light commercial potable water plumbing.
Installation should be performed by a licensed plumber in accordance with local plumbing codes and the IPC or applicable regional standards. Shut off and depressurize the water supply line before beginning work. The CPVC side requires solvent cement joining per manufacturer and code requirements; the press-fit end requires a compatible press tool rated for CTS press fittings. Do not apply heat or flame to the press-fit end during installation.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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