The top plate assembly is a key structural service part for Polaris/Zodiac UltraFlex valve systems. It helps form the upper section of the valve assembly, supporting proper alignment and operation of the internal valve components.When the existing plate is cracked, worn, or no longer seating correctly, replacement can help restore a better fit and support consistent water distribution through the in-floor cleaning system. This part is especially useful during UltraFlex valve rebuilds or corrective repairs. Replacement top plate assembly for UltraFlex valve applications Helps support proper valve structure and internal alignment Useful during Caretaker UltraFlex system repair or rebuild work Can help resolve issues caused by worn or damaged valve housing parts Part 40975 for accurate replacement identification