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Red-White Valve Corp. has a full line of ASSE 1010 certified water hammer arrestors that are maintenance free, use FDA-approved lubricants for drinking water systems and may be installed in new or existing piping systems. They use a cushion of air to absorb the impact of water hammer and protect the piping system. Configurations include threaded, solder, PEX, compression and hose end connections specifically for washing machines.