The 31-4024GRY diverter handle is a component manufactured by Balboa Water Group (specifically for their Hydro Air Hydroflow valves), which is widely used across a variety of hot tub brands as an Original Equipment Manufacturer (OEM) part.
The list below includes manufacturers that have incorporated this specific handle or the compatible Hydroflow valve systems into their spas.
Manufacturers Using the 31-4024GRY Diverter Handle
Cal Spas: Uses this diverter handle (or their own proprietary version, part number PLU21304020 for the 1-inch valve) in many of their models that feature Balboa control systems and plumbing.
Master Spas: Frequently uses Balboa and Hydro Air components in their various lines, including Clarity Spas and Healthy Living Hot Tubs.
Artesian Spas: Incorporates the compatible Hydroflow valve systems in their spas.
QCA Spas: Known to use generic Balboa/Hydro Air components extensively in their spa plumbing.
Marquis Spas: Often integrates Balboa control systems and related plumbing parts.
Coast Spas: Many models use Balboa-based control and plumbing systems, including these diverter handles.
Dynasty Spas: Regularly uses standard Balboa/Hydro Air parts for their equipment packs.
This particular handle is designed for the Balboa Hydroflow 3-way valve system with 1/2", 3/4", and 1" port sizes.
It does not fit premium lines from manufacturers like Jacuzzi or Sundance Spas, which use proprietary parts.
