Backwash valve to fit any of our Big Blue systems with the red clips. These are not guaranteed to fit all big blues. Check with us as some Big blue's have different sized riser pipes. It's important the riser pipes match the O-ring inside the Backwash Valve. This Backwash Valve fits 3/4PVC Pipe that has an outside diameter of 1.05" (Approximately 26.7mm).
 
Option to come with an adapter to connect to your Prefilter Housing (Usable on our Big Blue and Pre-Filters only) Other Big Blue's and Pre-filters please get in touch.
 
3/4" inch fittings and 15mm fittings options available to reduce the 1" female ports.