Plastic shavings in waterline and screen before pump

tepe50

I was getting ready to winterize a tab 400 and was cleaning out the screen and found this in it and the connection from the tank is plugged up plastic shavings also. If you’re having any water flow problems this may be the culprit and probably not good to be in there anyways so everybody might want to check. 

N7SHG_Ham

I also found some in the pickup line from fresh water tank. It doesn't appear they clear this stuff all out during manufacturering

Dalehelman

Pretty common in most new RVs.