Strange findings in the pre-filter

[jd-boss-hogg]

Hi All, thanks for letting me join the forum, I've read lots already and learnt quite a bit !

In the latest cleanout of my pre-filter (not as often as I should do), I found these parts !! I really have no idea where they came from. My side suction is turned offat the valve, the bottom suction obviously has a coarse filter that I cant believe that these got past, and the skimmers have their baskets in place with no holes. So I cant think that they have entered via the pool, which leaves the short run from the pool to the pre-filter which just has the normal 3 valves. I guess it must be one of them, but I've looked at an exploded diagram of them and cant see anything like it. Id appreciate any advise

[Denniswiseman]

I'm not positive but it looks like it could be parts from a spring loaded non return valve (NRV) normally on the suction side of the pump

[jd-boss-hogg]

ah, good call. I can see how it would fit together like that. Would the large 90deg rotating valves (the big red handles) that shut off the suction from the bottom/side/skimmers have one of these inside normally ?

[Denniswiseman]

I wouldn't think so. Best to strip one down and have a look