Pentair/Rainbow Auto Feeder 320 1/2 lb Check Valve (R172248Z) airreliefvalves A check valve helps control

A check valve helps control one-way flow and can play an important protective role in ozone-related plumbing

A filter cartridge provides the working media that helps trap suspended debris before it can continue circulating through the system

This replacement is especially useful when the original air release is leaking

This replacement is especially useful when the original heater has stopped heating reliably

A well-matched overlay helps keep a multi-function topside clean

Pentair/Rainbow Auto Feeder 320 1/2 lb Check Valve (R172248Z) airreliefvalves A check valve helps controlThe Pentair Rainbow R172248Z check valve is designed for compatible Auto Feeder 320 applications where a 1 2 pound check valve is needed. A valve like this is useful because it helps control one way flow in the feeder line, supporting more dependable system behavior and helping protect against backflow. Replacement is often appropriate when the original valve is sticking, leaking backward, or worn enough to compromise performance. Installing the