8Pcs B-108288 Duckbill Valve Replacement, Compatible with 503 503H 504

8Pcs B-108288 Duckbill Valve Replacement, Compatible with 503 503H 504

• [PRECISE COMPATIBILITY] Designed to fit common 503, 503H, and 504 series flush valves, serving as a direct replacement part to restore ideal function and ensure your toilet operates smoothly.
• [ESSENTIAL FUNCTION] Acts as a one-way air inducer check valve, allowing air into the system to maintain proper pressure and ensure a powerful, efficient flush with every use, while preventing water backflow.
• [DURABLE MATERIAL] Constructed from high-quality, highly elastic rubber that is resistant to wear, corrosion, and mineral buildup, ensuring reliable and long-lasting performance in wet environments.
• [EASY INSTALLATION] Features a simple, tool-free process for a quick swap. Made to standard size for a secure fit, enabling fast maintenance that gets your flush valve working again promptly.
• [COMPLETE SET WITH SPARES] The package contains 8pcs duckbill valves, offering adequate ready spares for both immediate use and future replacement needs, providing great value and convenience.