F40 control valve is fully adjustable 5 cycle valve that delivers controlled backwash, slow rinse and downflow bringing, rapid rinse, downflow service and timed brine refill. Backwash capacity can han... View MoreF40 control valve is fully adjustable 5 cycle valve that delivers controlled backwash, slow rinse and downflow bringing, rapid rinse, downflow service and timed brine refill. Backwash capacity can handle up to 30†in diameter tanks. the Flotrol F40 has a solid valve body for high durability and superior strength.
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