High Quality Pond Pro Check Valve 3/4" FPT x 3/4" FPT Ideal for Air Stones & Diffusers    

High Quality Pond Pro Check Valve 1/2" MPT x 1/2" MPT Ensure optimal performance and reliability in your aeration system with the High Quality Pond Pro Check Valve. Designed for air stones and diffusers, this check valve features a robust 1/2"...

Pond Pro Diffuser Check Valve — 1/2" MPT x 1/2" FPT Ensure reliable air flow and prevent backflow in your pond's aeration system with the Pond Pro Diffuser Check Valve. Designed for compatibility with a wide range of air stones and diffusers,...

Pond Pro 1/4" Diffuser Check Valve — 1/4" FPT x 1/4" FPT Ensure optimal performance and reliability in your aeration system with the Pond Pro 1/4" Diffuser Check Valve. Designed for compatibility with the ECO diffuser and the Can-Air SS...