Sioux Chief 648WG3WRV 3/4" F1960 PEX Expansion Relief Valve, No-Lead DZR Brass

Sioux Chief 648WG3WRV 3/4" F1960 PEX Expansion Relief Valve, No-Lead DZR Brass

The Sioux Chief 648WG3WRV is a 3/4" F1960 x 3/4" F1960 expansion relief valve built for inline installation on PEX expansion-connection water lines. It ties into the supply run with dual F1960 expansion connections and adds a third F1960 expansion relief outlet, giving installers a single fitting that both carries the line and vents excess pressure caused by thermal expansion. The body is manufactured from No-Lead (NL) dezincification-resistant (DZR) brass, making it suitable for rough-in potable water piping behind the wall or under the floor.

Key Features

• Trade Size: 3/4" F1960 x 3/4" F1960 inline connections size the valve to standard 3/4" PEX expansion tubing runs.
• Expansion Relief Port: A dedicated third F1960 expansion connection routes excess pressure away from the closed water system during thermal expansion events.
• Durable Construction: No-Lead DZR brass body resists dezincification and corrosion in continuous contact with potable water.
• Connection Type: F1960 PEX expansion connections on all three ports allow a cold-expansion installation with no glue, solder, or crimp rings at this fitting.
• Inline Design: Installs directly in the water line rather than as a separate branch fitting, simplifying rough-in layout near water heaters and closed-loop systems.
• No-Lead Compliant: NL brass formulation supports use on potable water supply lines.

Certifications & Compliance

• No-Lead (NL) Brass Construction

Technical Specifications

• Connections: 3/4" F1960 x 3/4" F1960 with F1960 expansion relief outlet
• Material: No-Lead DZR Brass
• Country of Origin: China
• Packaging: 6 EA per pack

Typical Applications

• Residential and Commercial Rough-In Plumbing
• PEX Expansion (F1960) Water Distribution Systems
• Thermal Expansion Protection Near Water Heaters and Closed-Loop Systems
• New Construction and Remodel Water Line Installations

Why Sioux Chief?

Sioux Chief builds the 648WG3WRV from No-Lead DZR brass and standardizes every connection on the F1960 PEX expansion platform, so plumbers can carry one valve that handles both the water line and the expansion relief function with a single set of cold-expansion tools. For rough-in crews already running F1960 PEX, that consistency in connection type and No-Lead brass construction means fewer fittings to stock and a straightforward tie-in near water heaters and other closed-loop applications.