![Hydra Aquatics Stainless Check Valve](http://tkaquatics.com/cdn/shop/files/10297_{width}x.jpg?v=1703020203)
Hydra Aquatics Stainless Check Valve
Stainless Check Valve
Dimensions: 1.5" x 0.25" x 0.25"
Material: Stainless Steel
Color: Silver
This check valve is usually placed between the CO2 regulator and the bubble to prevent water from back-flowing to the regulator.