I am not sure how old my equipment is, but it all seems to be working. When I got back from my christmas break around end of December, I did a good backwash. Dropped the pressure down to around 10. Every since then the pressure guage has stayed around 10-11, but recently has gotten up to around 12-13 and does not go any higher as of yesterday. There is plenty of pressure as when I vacuum it pulls up stuff with no issues. The outlets in the pool are putting out a lot of pressure and the pool looks clean. So is there a way to test the guage or should I not worry about it? I have vacuumed a few times this weekend and there was a lot of dirt and the presure has moved up to around the 12-13 which I am sure has to due with the small particles that were not caught by the filter basket. Before I backwashed it was a little over 20, maybe around 22-23. If you want me to post pictures of my equipment I can as they are in another thread.