Pentair Air Relief Strainer | PacFab Star D.E. Filter | 191329 Regal If your pump label reads

If your pump label reads "IntelliFlo VF

This direction control device (side B) is a replacement part for the Baracuda MX8 pool cleaner

While the pump is open for basket replacement

Remove cartridge elements or D

or other water resources you may have on your property

Pentair Air Relief Strainer | PacFab Star D.E. Filter | 191329 Regal If your pump label readsThe Pentair Air Relief Strainer (191329) is the OEM replacement air relief strainer for PacFab Star Polymeric and Star Pool & Spa D. E. filter systems. What It Does The air relief strainer prevents debris from entering the air relief valve assembly on your D. E. filter, protecting the valve seat and ensuring the manual air bleed operates correctly. A blocked or failed strainer can prevent air from purging properly, leading to air locks and reduced