Response to I have a Jacuzzi sand filter on my swimming pool and I'm losing water through my drain line hose. The filter housing has a 7 position Dial Valve , Model # 39263009. Can you tell me if a bad gasket or O-ring seal would cause this problem. If so would I have to replace the entire valve or are there replacement Gaskets or O-rings that can be purchased separately to repair the existing valve.

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