Are there alternatives to ball valves used in sump tanks?

Hello, 

I have tried several ball valves in my sump tank. But it does not last long and needs to be repaired several times. I want to know if there is any other alternative to a ball valve or a modified version of the same that lasts longer.   

T. Ravindra,

tatravi@gmail.com

9880788966.

 

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