Autofill valves

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My autofill stopped working in my 1950s pool. My pool guy put in a Fluidmaster 400A, but this does not get the water level high enough (turned all the way/max height). The pool guy threw out the old one, so I don’t know which one to buy. Is there a filler that would fill to a higher level? Please tell me the brand. If anyone lives in AZ that can help??
 
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If you have fully extended the inner tube of the Fluidmaster 400, you may need a 3/4" MPT to FPT riser.
The shortest riser of this type I've seen will provide about a 1" rise.

Take your fill valve with you to be sure the threads are correct.
Use teflon tape on the threads.

Be careful not to over-tighten the fitting and/or fill valve. You don't want to crack the threads in the bottom of the autofill canister.
 
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