Hello all and thanks for the help in advance. My problem is cloudy water. The water tests o.k. and is just cloudy not green, brown or yellow. I figured it was time to change the sand so I did that as specified by the filter manufacturer. I found that my 200# filter only had about fifty pounds of sand in it. It did not blow in the pool nor is it covering my lawn where I have been pumping the backwash or wastewater. I don't think the pool builder ever put it in and we didn't notice because our first season with the pool was too short to see a problem. The inside of the filter was very sticky as of old grease and oil having been in water too long. Surprise! Anyway I cleaned everything and re-assembled the filter with the appropriate amount of new sand. The laterals looked good so I did not replace any. The problem I have now is that with the valve in the filter position it appears to be bypassing the sand bed (recirculating). I am fairly sure I got it all put back together correctly with the appropriate type and amount of sand. The pressure gauge reads 20# and does not change regardless of valve position or amount of time on the filter setting. There is no air in the pump basket and no air in any of the return lines. There is no sand in the pool or backwash water either. There are no leaks anywhere that I can see. The valve is the obsolete WC112-148. I have ordered the replacement 261186 valve other than try to rebuild the old one. Am I missing something? I don't want to throw money at it and end up with a cloudy pool in the end.