The 2202X hot tub gate valve is manufactured by Valterra Products and is a common, non-proprietary part used by many hot tub manufacturers. The specific hot tub manufacturers using or having used this part include those who use standard, easily sourced plumbing components.
Here are some of the manufacturers that have been associated with Valterra gate valves or similar standard plumbing parts:
Maax Spas Industries: Maax Spas explicitly mentions using Valterra 2 in. Socket & Spigot Gate Valves in their systems.
Master Spas: While Master Spas uses its own branded parts in some cases, the 2202X valve is often listed as a compatible or replacement part for some of their models through third-party suppliers.
Cal Spas: Uses a variety of industry-standard plumbing, and Valterra valves can be found as components or replacements in their systems.
Artesian Spas: Similar to other manufacturers, Artesian Spas uses standard OEM components like slice valves.
Freeflow Spas: The Valterra valve is a common plumbing component that fits in with the standard parts used in Freeflow and related brands (like Watkins).
Marquis Spas: Often uses standard parts from major suppliers, making Valterra valves compatible replacements or original equipment in some cases.
Other Brands: Due to the generic nature of plumbing parts like this gate valve, they are widely applicable as original or replacement parts for numerous other brands, including H2O Spas, Sundance Spas, Jacuzzi, and Vita Spas, depending on the specific plumbing configuration.
The Valterra 2202X valve is a 2-inch slip (socket) by 2-inch spigot (spg) unibody PVC valve, designed for 2-inch plumbing systems, with a maximum pressure rating of 40-50 psi.
The widespread use of such standardized parts across the industry means that the specific valve in your spa could be found in a wide range of different hot tub brands.