Check Valve Assembly

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