This specially designed 0.25" (quarter-inch) Active Aqua Check Valve will safeguard your air pump by preventing nutrient solution from back-siphoning and entering it in the event of a power outage. Simply place the check valve in your run of quarter-inch air line tubing between your air pump and reservoir or hydroponic bucket, and you will never worry about solution returning down the air line and damaging your pump.
Does not include air pump, tubing or air stone.
- For pumps that use quarter-inch air tubing
- Compatible with air pump models EMPUMP, AAPA3.2L, AAPA7.8L, AAPA15L, and AAPA25L
- Pack of six check valves
— Ships from HF: OR, CA, CO, PA, TX, FL USA (No USPS).