Viega ProPress 1-1/4" Zero Lead Check Valve - Double Press Connection - Smart Connect Technology

The Viega ProPress 1-1/4" Zero Lead Check Valve with Double Press Connection and Smart Connect Technology is a lead-free potable water check valve engineered for modern hydronic and domestic water systems. Designed for inline installation in pressurized water lines, this bronze check valve prevents backflow while maintaining full compatibility with Viega's ProPress press-connect fitting ecosystem, eliminating the need for solder, flux, or threading on copper, PEX, and steel piping applications.

The 1-1/4" connection size accommodates mid-to-large diameter distribution lines in residential and commercial installations. EPDM sealing elements provide reliable long-term performance across standard water temperature and pressure ranges. The dual press connection design allows integration at any point in the line without requiring directional flow consideration during initial installation—critical for contractors managing complex multi-zone systems. Smart Connect Technology feedback ensures proper press-tool connection engagement, reducing installation errors and field rework.

This check valve is specified for new construction, renovations, and system upgrades where backflow prevention is required by code or design—particularly in multi-story residential buildings, commercial water systems, and applications where reverse flow could damage downstream equipment or compromise water quality. The zero-lead bronze body meets NSF/ANSI 61 certification for potable water contact, addressing lead content regulations across municipal, state, and federal drinking water standards.

ProPress technology has become the industry standard for speed-of-installation in modern plumbing and hydronic work, enabling crews to complete press-connect systems without torches, thread sealant, or extended curing time. The 1-1/4" size bridges between residential main lines and commercial distribution branches, making this valve a reliable choice for professionals and builders seeking code-compliant backflow prevention with minimal installation complexity.