Complete Aquatics Dual Union Check Valves Size:3" Check Valve lower the nitrate levels (which

lower the nitrate levels (which promote algae growth)

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Previously called the KoiKeeper

oil-filled pressure gauge and pressure relief valve installed

Airmax® EasySet™ Weighted Airline rests on the bottom of your pond and is guaranteed not float even when filled with air

Complete Aquatics Dual Union Check Valves Size:3" Check Valve lower the nitrate levels (whichComplete Aquatics Check Valves features dual union connections. Some valves can be used vertically or horizontally, while others can only be used horizontally. SKU Description Use Vertically? Use Horizontally? CV00718 1. 5" Dual Union Check Valve YES YES CV00703 2" Dual Union Check Valve YES YES CV00713 3" Dual Union Check Valve NO YES CV00716 4" Dual Union Check Valve NO YES