Somebody mentioned that they needed a key for their water tank on a westy?  I found this on Vanagon.com .
    OEM replacement water tank keys are available from: 

        Euro-American RV Products (AKA Delta Six Enterprises)
        5517 Cleon Avenue
        North Hollywood, CA 91601 

        1.818.760.4214
        1.818.760.4216 fax 

        Have fun...

        Karl Batzler

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