Vertex VAL420Z Check Valve — 1 Per Line from Cabinet

The Vertex VAL420Z Check Valve is a dependable component engineered for air line control in aeration systems. Designed for performance and longevity, this check valve ensures that airflow moves in one direction only—protecting your compressor from water backflow. Installed one per line from the cabinet, it is a critical part of maintaining reliable aeration performance, especially in aquatic environments where fluctuating water levels and back pressure are common.

Manufactured with durable materials that withstand pressure and moisture, the VAL420Z check valve is ideal for use in pond and lake aeration systems. It helps maintain consistent air pressure by automatically closing if water attempts to enter the airline, safeguarding the compressor and reducing maintenance needs.

Its compact, in-line construction supports easy installation and compatibility with Vertex systems and many standard setups. Whether you're servicing an existing aeration layout or building a new configuration, this check valve contributes to reliable and uninterrupted operation.

This part is sold as one unit per airline, making it easy to replace or expand your current system. It is often installed just downstream of the compressor cabinet where the air lines begin their path toward the diffusers.

Features

Prevents water from reversing into the airline, protecting the compressor system.

Built for long-lasting use in moisture-prone environments.

Fits easily in standard airline configurations; install one per line from the cabinet.

Helps reduce system wear and tear by preventing water ingress.

Works with Vertex aeration systems and many other common aeration setups.