The MDV XL is an optional parts bag for the DEL Ozone AOP 50 Ozone + UV-C Generator for In-ground Swimming Pools.  In December 2017 the Mixing Degas Vessel MDV-100 was renamed MDV XL.  This new XL name helps differentiate it from the MDV-10-08 for smaller pools.  

The MDV XL eliminates visible ozone bubbles in swimming pools.  When water flow from the pool plumbing enters the MDV XL, the ozone bubbles float up and accumulate at the top.  The pool water is pushed out of the bottom of the MDV XL and re-mixed with the main body of water.  The separated ozone bubbles passes through a float valve and are sent through a carbon destruct.  The carbon destruct neutralizes (kills) ozone before safely venting off into the atmosphere.

The MDV XL allows for a higher concentration of ozone to be used on pools and spas.  It prevents ozone bubbles from returning to the pool, eliminating bubble noise and visibility.  Click on Installation and Operations Manual link below for full details.

The MDV XL:

• Is an optional parts kit for DEL Ozone AOP 50 (previously Solar Eclipse)
• Gets more ozone into the water (higher ozone dissolution)
  
• Eliminates unused ozone (in the form of bubbles) from returning to the pool
• Eliminates the potential of ozone reacting with pool components such as covers, fittings, or surfaces
• Prevents bubbles from gathering under the cover or inside the plumbing
• Utilizes a Granulated Activated Carbon (GAC) Carbon Destruct Cartridge to destroy ozone off-gas.  Replace Carbon Destruct (9-0620) annually
  

 Examples of MDV XL installations include:

• Vinyl Pools
• Indoor Pools
• In-Ground Spas
• Water Features
• Reflection Pools
• Pools with an Automatic Cover
• Water Containing Fish or Wildlife