UltraPure Replacement Bulb [UPPHO] (3901850) astral A part like this is

A part like this is useful because it blends a bright

Two-speed spa pumps are often practical where the system needs both stronger active operation and a lower-speed mode

and the 4-pin connector format

more predictable service cycle

This Waterway internal is a practical replacement when the goal is to refresh both the jet’s performance feel and its finished appearance

UltraPure Replacement Bulb [UPPHO] (3901850) astral A part like this isUltraPure Replacement Bulb [UPPHO] (3901850) is a replacement bulb for compatible UltraPure UPPHO ozone system applications. Replacing the bulb at the proper service interval helps support consistent water quality equipment performance and keeps the ozone system working as intended. This UltraPure part is ideal for maintenance repairs where the existing bulb is expired, weak, or no longer operating correctly. Match the system model and part number