Swimables SW-28-200 Jandy-Style Air Relief Assembly 999 or low-quality DE powder

or low-quality DE powder

Built-in memory saves your last setting

Simple dip-and-read testing encourages consistent use

Manual vacuuming with standard heads

After every backwash

Swimables SW-28-200 Jandy-Style Air Relief Assembly 999 or low-quality DE powderSafely Release Trapped Air and Protect Your Pool Filter The Swimables Jandy Style Air Relief Assembly (SW 28 200) is a replacement air relief assembly designed for Jandy style pool filters. The air relief assembly allows trapped air to be safely purged from the filter tank during startup, preventing pressure spikes, inaccurate pressure readings, and unsafe operating conditions. A properly functioning air relief assembly is critical for filter safety,