Often imitated but never duplicated, our proprietary bellows is the industry benchmark used in over 1 million tanks to date. Our unique manufacturing technique enables the combination of a tremendously flexible bellows with not just 2, but 4 hardened feet that will not break down or collapse. Our solution holds the draw opening the perfect distance from the tank floor maximizing valuable chemical usage.

• 4 solid, resilient feet
• Flexible self-leveling design
• Exclusively manufactured by ASV Plastics
• Multiple design patents and patents pending