Sioux Chief 633-C18 3/4" CPVC Riser Tube with No-Lead FIP Swivel Connection, 18" Length

Sioux Chief 633-C18 3/4" CPVC Riser Tube with No-Lead FIP Swivel Connection, 18" Length

The Sioux Chief 633-C18 is an 18" CPVC riser tube built for rough-in supply hook-ups, featuring a 3/4" CPVC pipe end on one side and a 3/4" female iron pipe (FIP) swivel fitting on the other. The swivel is manufactured from no-lead, dezincification-resistant (DZR) brass, giving installers a corrosion-resistant connection point that stands up to the demands of behind-the-wall plumbing. Because the FIP swivel seals against an internal washer rather than the threads themselves, installers must never apply pipe dope or thread sealant to the swivel connection.

Key Features

• Trade Size: 3/4" CPVC pipe end x 3/4" FIP swivel connection, with an 18" overall length sized for standard rough-in riser applications.
• Durable Construction: CPVC tube body paired with a no-lead, DZR (dezincification-resistant) brass swivel fitting for long-term resistance to zinc corrosion.
• FIP Swivel Connection: The female swivel end rotates freely, letting installers align the fitting without twisting the CPVC riser during hook-up.
• Thread Sealant Caution: Do not use pipe dope on the FIP swivel threads — the swivel seals against an internal washer, and sealant can compromise the connection.
• No-Lead Compliance: The brass swivel component is No-Lead (NL) rated, supporting potable-water rough-in requirements where lead-free fittings are specified.
• 18" Length: The extended 18" riser gives installers extra reach when connecting CPVC supply runs to appliance or fixture shut-offs.

Certifications & Compliance

• No-Lead (NL) Brass Swivel Fitting
• DZR (Dezincification-Resistant) Brass Construction

Technical Specifications

• Country of Origin: United States
• Packaging: 25 per case
• Material: CPVC tube with No-Lead / DZR brass FIP swivel fitting
• Installation Note: Do not use pipe dope on FIP swivel threads

Typical Applications

• CPVC Rough-In Supply Riser Connections
• Washing Machine and Ice-Maker Outlet Box Hook-Ups
• Appliance and Fixture Shut-Off Supply Runs
• Residential and Commercial Rough-In Plumbing
• Renovation and New Construction Rough-In Work

Why Sioux Chief?

Sioux Chief builds rough-in plumbing hardware for the demands of professional installers, and the 633-C18 riser is no exception. Pairing a CPVC tube with a no-lead, DZR brass swivel fitting gives contractors a corrosion-resistant connection that installs quickly behind the wall or under an appliance, provided the swivel threads are left free of pipe dope. It's a straightforward, code-focused component manufactured in the United States for dependable performance in everyday rough-in work.