Description
SPECIAL ORDER ITEM. Review Returns Policy before purchase. Restore backflow preventer relief valve functionality with this comprehensive repair kit. Designed for 4 in to 6 in 909 series and 4 in to 10 in 909M1 series valves, this assembly includes a diaphragm, disc and piston assembly, seat, seat O-ring, adapter O-ring, and lubricant. The 1-1/2 in diameter components ensure a precise fit for maintenance tasks. For 909M1 models sized 8 in to 10 in, the kit provides a bottom plug and spring assembly to facilitate complete internal restoration. This kit allows for the replacement of critical internal components to maintain system integrity and pressure relief performance in compatible backflow prevention assemblies.