Hello -

Mine went bad two years ago and I got a very similar replacement at the pool supply store.

I think a pressure guage is important. It's a great indicator of what is going on in that big dark tank that you cannot see into (as well as what comes before and after that tank.)

So, IMHO - dust off a Hamilton and head on out to the pool supply store or WallyWorld and get yourself a pressure guage and a roll of teflon tape and replace it.

BTW - you may want bring your old one with you so you can get the thread size right - but I think they are pretty universal for pool filters.

hope this helps,

Peace