Pentair American Products/PacFab Barrel Nut & Spring Assembly (53108900Z) modular Designed for compatible control plate

Designed for compatible control plate service applications

Replacing it can help restore stable combustion support and improve confidence in the heater’s startup and running condition

This cartridge is a practical replacement for systems that rely on compact dimensions and a slip-style lower configuration rather than a threaded or SAE connection

and WB skimmer applications where the original basket has become brittle

Pentair American Products/PacFab Barrel Nut & Spring Assembly (53108900Z) modular Designed for compatible control plateThe Pentair American Products PacFab Barrel Nut & Spring Assembly (53108900Z) is a replacement filter component for compatible pool and spa filtration equipment. Barrel nut and spring assemblies are small but important parts used in specific filter configurations to support proper fastening, tension, or serviceable connection points. When the original assembly is damaged, missing, corroded, or no longer functioning as intended, replacement can help