Check Valve Assembly

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Prevents water from emptying back into the pond when the pump is shut off. Attached union fitting makes it easy to remove pump from the rest of the plumbing. Type Skimmer Type Pipe Type Pump Outlet Aquascape Dual Union Classic or Signature Aquascape Skimmers 1 1/2" or 2" Flex PVC 1 1/2" or 2" Female or Male Threaded Atlantic Any skimmer with submerged pump (Aquascape and Atlantic included) 1 1/2" or 2" Flex PVC or Kink-Free 1 1/2" or 2" Female Threaded Show more