Air Relief Valve for the following Hayward Filters:
- EasyClear(TM) C400 & C550
- ASL C850 & C1250
- StarClear(TM)/StarClear II(TM)/StarClear(TM) Plus/SwimClear(TM)
- Micro StarClear(TM) C120, C200 & C225 Cartridge Filters
- ReGenX(TM) RG450 & RG700 Grid Element DE Filters
- Perflex(R) EC65, EC65A, EC75, EC75A, EC50A & EC50AC
