2 1/2"-3" 909 2ND CHECK ASSEMBLY SKU: 0794101 $849.00 Login for better price Select Quantity -+ Add to Cart Additional DetailsResourcesManufacturer: Watts Size: 2 1/2 Inch, 3 Inch Product model: 909 / LF909 / LF909HW 909 / LF909 / LF909HW Installation and Maintenance Instructions 909 / LF909 / LF909HW Specification Sheet 909, 009, 990 and 992 Backflow Preventer Repair