3/4"-1" 909 2ND CHECK ASSEMBLY SKU: 0887121 $204.50 Login for better price Select Quantity -+ Add to Cart Additional DetailsResourcesManufacturer: Watts Size: 3/4 Inch, 1 Inch Product model: 909 / LF909 / LF909HW 909 / LF909 / LF909HW Installation and Maintenance Instructions 909 / LF909 / LF909HW Specification Sheet 909 / LF909 / LF909HW Relief Valve Discharge Rates 909, 009, 990 and 992 Backflow Preventer Repair