I have a Hayward sand pool filter, S244T. The valve on the top is marked SP714-A, and when I look for a sight glass to replace in the head, where there is none now I'm suffering from serious frustration. I bought what was suggested to me by the web sites and I ended up with a glass thats the wrong size. The glasses I think are the right ones look like they are going to be 20+ dollars with another $10 for shipping. If I'm going to order this again, I'd like to make sure I get the right thing. It's pretty frustrating to order something the looks like it's about the same level of complexity as a simple baby food jar but have to spend this much money and have it be this frustrating a process. Attached is a photo of the valve body which shows the port where the sight glass goes.
Any help would be appreciated.
Any help would be appreciated.