The reduced pressure zone total rubber parts kit for the 2" 009M2 Series consist of two check assembly o-rings, two disc assemblies, one cover o-ring, one relief valve diaphragm, relief valve seat o-ring, one sensing passage o-ring, one diaphragm plate o-ring, one relief upper and one lower stem o-ring, one relief valve disc assembly and one bleed screw o-ring. This kit is built to last, allowing for reliability and strength. Made for easy installation and use, it will help ensure the best service life possible.