How to secure water fill inlets?
I just don't like having those accessible like that. How about locking caps like locking gas caps? Or how about a metal plate with two holes in it and a locking door? Unthread those caps;...
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Looking at the photo, you might be able to remove two of the screws, use a thin chain or cable with a small padlock, and make a semi-secure closure without too much trouble. This would only be effective to keep prankster children from bothering the inlet. Anyone out to get you could do a bunch of damage in other ways. Personally, I don't have a locking gas cap because the damage a screwdriver or ice pick can do to the gas tank is so much greater. I understand you concern with the water supply, some kid thinking it would be funny to pour something in the tank and all....and I have always had the inlet in a locked compartment. One thought; is there access to the inlet hose, could you attach a shutoff valve that would prevent any inward flow?
