1/4″ x 1/4″ Ozone Check Valve 350-0520

The Marquis 350-0520 is an official OEM ozone check valve designed for Marquis Spas. It is primarily used to maintain optimal water flow and prevent water from backing up into your ozone generator (such as Del Ozone systems).

Key Specifications:

• Application: Ozone check valve
• Plumbing_ 1/4″ x 1/4″ barb fittings
• Compatibility: Fits various Marquis Hot Tub models integrated with Del Ozone systems