• Prevents backflow in ponds and water features
• Provides a professional pump and plumbing connection
• Innovative reversible fittings eliminate guesswork
• Dual union, tool-free design simplifies maintenance
• Height extendable for installation taller filters

The Dual Union 3” CVA Check Valve effectively prevents backflow in ponds and water features while providing a professional pump and plumbing connection inside filters and pump vaults. The heavy-duty check valve flapper is built to last and maximizes water flow through the valve when open while preventing the backflow of water when the pump is shut off or during a power outage. Union connections on both sides of the valve make pump and filter maintenance quick and easy without the use of tools.

FIlter Use:

Pondless Waterfall Vault with Extension, Large Snorkel Vault & Grande Skimmer

Pump Use:

Tsurumi 12PN and Aquascape 10,000

Pump Discharge:

3" FPT