Polaris Zodiac 3900 Shroud (39-003) laingthermotech and this Flo Control valve

and this Flo Control valve is designed with 1-1/2 inch slip connections and a 1/2 pound spring rating using the 1700C15 reference

Designed for compatible hydronic heater applications

This style is useful when flow verification is needed in a larger plumbing layout with a stronger-rated control component

Useful for compatible cartridge filter applications

and system compatibility

Polaris Zodiac 3900 Shroud (39-003) laingthermotech and this Flo Control valveThe outer shroud on a Polaris Zodiac 3900 cleaner helps protect the internal drive and body components while giving the cleaner its finished shape. This replacement shroud is used when the original cover is damaged, worn, or missing. Replacing the shroud is a practical repair for cleaners that still operate but need a refreshed exterior or better protection around the internal assembly. It is suitable for repair work, refurbishing, or component