PSI shot up after backwashing

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LisaBgame

LisaBgame

Well-known member
Jun 19, 2022
45
MI
Pool Size
33000
Surface
Vinyl
Chlorine
Liquid Chlorine
I was so close to finishing my SLAM. Today my PSI on sand filter was at 14 and it’s usually 10-11, so I decided to backwash. Everything went fine with that but then when I started it up again as I normally do, the PSI shot up to 30 and there was very little suction at the skimmer and weak flow out of returns.

I have only a push pull valve with my sand filter. I did notice that when pulling it up after backwashing, it came up really easy - usually there is some resistance. I’ve turned it off and on several times and same thing keeps happening.

Please help! I’m so afraid I’ll lose all the progress I’ve made in my SLAM. 😢
 
Last edited:
Who is the manufacturer of your filter and push pull valve? If you’re comfortable doing so, you need to disassemble the valve and inspect it for issues.
 
Took it out and discovered my valve is broken, a whole plunger piece is at the bottom of that area. I’m not sure how to get that out. I’m going to see if I can find this valve online to order
 

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That’s what I was afraid of. If you unscrew the unions to the filter, can you access the broken piston through the bottom port that connects to the filter?
 
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