Difference between Polaris backup valves?

[glc650]

Hi,

What's the difference between the G59 and G52 backup valves for Polaris cleaners?

Thanks,

->g.

 

[ajw22]

The G59 is described as a “double acting” backup valve. It runs twice as fast and backs up the cleaner more frequently.

The G52 is said to backup every 2 1/2 minutes. The G59 backups approximately every 1 minute 45 seconds.

I think the G59 is used in smaller pools where the cleaner gets stuck in a corner more frequently.

 

[glc650]

Do they both backup for ~30 seconds?

 

[ajw22]

Do they both backup for ~30 seconds?

I suspect so but have not found a spec on that.

 

[glc650]

Can the backup time be adjusted or thrust be restricted on either?

 

[ajw22]

See page 20 in Polaris 380 Repair Manual - PDF Free Download

There are threads about folks hacking the backup valve to change the timing.

 

[ajw22]

Or page 20 here gives a better explanation of the backup valve https://cdn.poolzoom.com/pub/media/productattach/f/i/file-1388936836.pdf