AR2864 Kit from Annovi Reverberi. The AR2864 valve repair kit contains six complete valves and six o-rings to fix your RK, RKA, RCW or RW pressure washer pump from Annovi Reverberi. This well built valve repair kit is made from strong stainless steel, rubber and plastic to ensure the wet end of your pump keeps your machine pumping water tight. Don't see your pump listed here, but feel that you do need this kit? Please verify on your pumps breakdown. If you don't have the manual that came with your specific pump click here to find your pump and see if the AR2864 repair kit is the right valve kit for your machine. This kit also works on Viper Pumps and has a Viper number of VPK003