Complete Aquatics Dual Union Check Valves Amish Handmade Maintain a consistent water level

Maintain a consistent water level in all Atlantic Skimmers

All base units come with a 3/4" FPT fitting and a multi-barb adapter with a 3/8" barb

helping fish fight off bacterial or viral infections

The EasyPro Two-Way Air Splitter is ideal for rotary vane

Complete Aquatics Dual Union Check Valves Amish Handmade Maintain a consistent water levelComplete 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