how does Rainbow Chlorinator check valve work


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Old 05-26-20, 12:44 PM
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how does Rainbow Chlorinator check valve work

have pool and Rainbow chlorinator

directions say to charge it,
close control valve, shut off pump, and water will drain from the chlorinator
leave valve closed and turn on pump, check valve will keep water from entering chlorinator
add chlorine tabs
open control valve

but water does not drain from the chlorinator

so how does the check valve work
 
 

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