Protect your drainage systems with Gentec® one-way drain valves, engineered to prevent cross-contamination and reverse flow of wastewater in medical, laboratory, and compliant plumbing systems. These valves are critical for infection control, WHS compliance, and protecting your clean water zones. Compact, durable, and easy to install — Gentec one-way valves are trusted in Australia’s most sensitive healthcare and hygiene-focused facilities.