Defective design in the valve neck spoils the whole system.

Great product, but you can't use it with the valve stem being cracked. Twice I've had to replace this valve neck (it's black plastic with the green bottom, about 1" high and connects into the clear air tube connecting the to the container). The first time I returned the whole to Amazon because they said they don't have replacement parts. This cost me a lot of time going to UPS, repackaging the old product, and waiting on the whole unto to be replaced.

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