I am looking for a replacement for the backwash push/pull valve on my Apollo VA-52. The existing push/pull is brass and made by Val-Pak, resembles this one: http://www.inyopools.com/pool_parts_anthony_push_pull_valve.aspx
What are my replacement options? The filter input/output lines look to be 9" OC, 1.5" I think. I'm fine going with a PVC option.