Product Description 4" Backwash Valve Assembly (EPD) Bronze Casted, Hydraulic Activated 3-way Valve. Externally Coated with Polyurethane Product Videos Custom Field Product Reviews Write a Review Write a Review × EPD Filter Parts - 4" Backwash Valve Assembly Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *