Pentair Max-E-Therm Control Panel Cover Retainer Cap (77707-0009) deltauv Matching the correct pre-12/2013 application

Matching the correct pre-12/2013 application helps preserve fit and original control compatibility

supporting more dependable startup behavior in the heater

A cartridge like this is useful because it helps restore filtration capacity while preserving the dimensional fit needed by the existing filter housing

properly assembled condition after repair

Replacing the affected jet helps refresh the spa experience without replacing the entire plumbing assembly when the body and connection style are still serviceable

Pentair Max-E-Therm Control Panel Cover Retainer Cap (77707-0009) deltauv Matching the correct pre-12/2013 applicationSecure the control panel cover on compatible Max E Therm heaters with this retainer cap. Small hardware pieces like this can make a noticeable difference when the cover no longer stays aligned or seated, especially on outdoor heaters exposed to sun, moisture, and regular handling. This replacement is useful during panel service, cosmetic repairs, or heater restoration work where the cover hardware is incomplete. Replacing the correct cap can help