I have a 2" Ortega check valve who's disk has failed for the second time in a year. I would like to replace it with a new valve, but due to the limited room, not sure that I can. The pipes and valves are all right next to each other tucked in behind the heater. I am looking for options for replacement or repair. The check valve feeds my spa which is above the level of the pool. So every night when the pump kicks off, the sp drains back to the pool. Pictures are attached.