Clear inspection window: Built with a transparent PVC observation window that lets you visually check flow and valve condition without disassembly, simplifying maintenance and troubleshooting. Durable PVC construction: Made from quality PVC that resists oxidation and wear, delivering extended performance under continuous flow conditions. Reliable backwash protection: The 500 check gate uses a oneway design to prevent wastewater backflow, protecting upstream equipment and ensuring cleaner, safer effluent for both household and industrial systems. Easy, tool installation: Designed for straightforward installation without specialized tools or advanced skills, so you can restore normal effluent function quickly. Key functions and attributes: Function: oneway check valve to stop backflow and allow unidirectional flow Material: clear PVC inspection window with durable PVC body for corrosion and wear resistance Performance: continuousflow capable, reduces maintenance needs by allowing visual checks Model/spec: 500 check gate (oneway design for wastewater/backwash prevention) Typical applications: Residential septic and drainage lines to prevent sewage backflow into homes Small commercial or industrial wastewater discharge lines to protect pumps and process equipment Wastewater treatment and pumpstation outlets where backwash prevention and easy visual inspection are required Why choose this product: Minimizes downtime with visual inspection capability Reduces replacement and frequency thanks to corrosionresistant PVC Protects systems from backflowrelated damage with a proven oneway design Installs quickly without specialized labor, lowering installation cost and complexity