Discontinued-See Extended Desc.

The FL17777 is a Fleck Injector Body for the 1700 control valve, a genuine Pentair component that houses the injector nozzle and throat. The injector body is the housing within which the venturi assembly creates suction, drawing brine from the salt tank into the resin bed during the regeneration cycle. It provides the sealed enclosure that makes the venturi action possible, so its integrity is essential to reliable brine draw.

• Genuine Fleck 1700 injector body
• Houses the injector nozzle and throat
• Forms the venturi housing for brine draw
• Available in kits FL60381-03 and FL60381-04
• OEM replacement for the Fleck 1700 valve
• Sealed enclosure supports complete regeneration

This injector body has been discontinued as an individual part but remains available in the FL60381-03 and FL60381-04 service kits. Those kits group the body together with the nozzle, throat, fittings, and seals commonly serviced at the same time, which is the practical way to source it since the injector functions as a complete system rather than a single isolated piece. Replacing the body alongside its companion parts ensures the venturi assembly is restored as a whole.

Proper brine draw is essential to fully recharging the softening resin during each cycle, which is what keeps hardness out of the home's water. The injector body provides the sealed housing that allows the nozzle and throat to generate consistent suction. Over time, the body can develop cracks, accumulate scale, or wear at its sealing surfaces, any of which can weaken suction and leave the resin only partly regenerated. That often shows up as a gradual return of hard-water symptoms even though the valve appears to be cycling normally.

Replacing the injector body, along with a fresh nozzle and throat from the kit, restores the complete venturi assembly and returns a Fleck 1700 softener to dependable, efficient brine draw and full regeneration, keeping the home's water consistently soft.

For installers, sourcing the injector body through the FL60381-series kits is the sensible route now that the loose part is discontinued, and it conveniently supplies the nozzle, throat, fittings, and seals needed to rebuild the injector as a complete system. Treating the injector as a unit, rather than replacing one piece at a time, gives the most reliable brine draw and spares the homeowner a return of hard water, keeping an older Fleck 1700 softener performing dependably.