I have been using this forum to fix my pool and search the forums for a while but im at a point where i need advice.
A little bit of history, i purchased this house with a figure 8 pool. It was green when i moved in, went to pinch a penny (local pool store) and reading this forum i went through certain procedures and got it back to health. Once it was back up and running i was dealing with several issues which i resolved.
I later realized the sand started getting back in the pool and back washing didn't help so i replaced the sand. A week later i noticed the pressure dropped down to 3 PSI, no bubbles at the pump but i did notice my jets were weak. So i started investigating and noticed that if i turn the ball valve closer to the closed position the pressure increased. If anyone can explain what this ball valve does i would appreciate it. I noticed it decreases the pressure at my main jet and it allows me to control the flow equally across all the jets.
I was researching but couldn't find much, the next day i went back to my filter to notice it was off, well the timer went bad so i had to switch it on and off manually and watched the pump come on. As the pump primed my multiport valve started leaking and there is a split at one of the 1 1/2 ports.
At this point im not sure whats to do, i dont want to hurt my pool so i need a fix asap. I tried the clamp method but the damage is more like a split then a crack so it didnt do anything. So what do i do i now? The system is very old im not sure how old, do i buy a new filter maybe DE or cartridge, keep my old sand filter with brand new 100 pounds of sand and just buy a new multiport valve and keep everything the same? Also i already replaced the spider gasket, it being pentair i had to change the whole diaphram piece and it was nearly 60$. Im new to this stuff so i will try my best to help you guys help me. Thanks