Had the exact same problem and called Anderson. I was told that if and crud gets in the valve it will ruin the O rings. I ordered a replacement core like Boatbird. When I removed the core sure enough the O rings were destroyed. Took about 15 minutes to change the core. If DRV is sending you a complete valve I would remove the core and install it in the existing unit. That would be a much easier process than changing out the whole valve. I now have a filter before the Anderson valve and no problems for a year and a half. Dick
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