Check Valves

Pond Pro Check Valve 1/2" (MPT x MPT)

High Quality Pond Pro Check Valve 1/2" MPT x 1/2" MPT Ideal for Air Stones & Diffusers Only 1/3 psi cracking pressure  

Pond Pro Check Valve 1/2"

Pond Pro Diffuser Check Valve- 1/2" MPT x 1/2" FPT Check Valve 1/2" MPT x 1/2" FPT Used on Many Air Stones/Diffusers including many Can-Air and Robust-aire diffusers

Pond Pro Check Valve 1/4"

Pond Pro 1/4" Diffuser Check Valve  Check Valve 1/4" FPT x 1/4" FPT Used on the ECO diffuser and the Can-Air SS diffusers this check valve has 1/3 lb cracking pressure and Buna Seal Airstone/Diffuser