3/8" x 1/2" PolyAlloy Straight Stop Valve, PEX Crimp x Lav (Plastic Nut) (Installation by Non-Professional may void Viega's LLC limited warranty)

Viega 3/8" x 1/2" PolyAlloy Straight Stop Valve – Precision Shutoff for Potable Water Systems

Engineered for secure, long-lasting performance in PEX water distribution systems, the **Viega 3/8" x 1/2" PolyAlloy Straight Stop Valve** delivers dependable control in point-of-use applications. Designed with a durable PolyAlloy body and chrome-plated finish, this valve ensures corrosion resistance, chemical stability, and ease of operation in both residential and light commercial environments.

Engineered for Durability and Simplicity

This valve is designed for shutoff control at fixtures such as lavatories, sinks, and toilets. It features a 3/8" compression outlet and 1/2" PEX F1807 crimp or clamp inlet, allowing for seamless integration into modern PEX installations. With a compact profile and smooth-turn handle, it fits easily in tight spaces without sacrificing reliability or service life.

Professional-Grade Features

• PolyAlloy Construction – Non-metallic body resists scale, dezincification, and corrosion, suitable for aggressive water conditions.
• Rated to 160 PSI – Built to withstand standard system pressure requirements for residential water supply lines.
• Temperature Range – Certified for operating conditions from 0°F to 180°F, suitable for both hot and cold potable water systems.
• Chrome Finish – Provides enhanced durability and a clean appearance for exposed valve locations.
• NSF-Certified – Compliant with NSF/ANSI 14, 61, and 372 standards for potable water applications.

Product Specifications

• Connection Type: 1/2" PEX (ASTM F1807 crimp/clamp) x 3/8" compression outlet
• Pressure Rating: 160 PSI
• Temperature Rating: 0°F to 180°F
• Body Material: PolyAlloy (non-metallic polymer)
• Finish: Chrome plated
• Application: Potable water fixture supply lines

Installation Considerations

Installation requires standard PEX tools and fittings compatible with ASTM F1807 systems. For best results, crimp or clamp connections should be verified with a go/no-go gauge. While this valve is designed for ease of installation, a licensed plumber should perform the work to ensure full compliance with code requirements and proper system integration.

Ideal for Professional Applications

Whether you're roughing in a bathroom or completing a remodel, the **Viega PolyAlloy Straight Stop Valve** provides a high-quality shutoff solution that aligns with modern PEX plumbing standards. Its tool-free compression outlet streamlines fixture hookup and its non-metallic body extends longevity in varying water conditions.

Trusted by the Trade

Viega valves are widely recognized in the industry for precision manufacturing, long-term performance, and proven system compatibility. This stop valve is no exception—offering an efficient and durable solution that meets today’s job site demands.