Genuine Hayward  Part SP1500UNPAK2 Union Pack, flush union with 1.5" Socket internal. Used on chlorinators and pool pumps.

• Quick connect union pack includes 2 each of socket connector, union nut, O-ring
  
• Fits Hayward Perflex extended-cycle DE, Pro-series top-mount sand and XStream Filtration series above-ground Full-Flo pool and spa filters
  
• Also fits Hayward Power-Flo Matrix above-ground pumps and CL100/CL200 chlorine feeders
  
• Made of ABS plastic material
  
• It has 1-1/2-inch socket end
• Perflex EC40, EC50 Series
• Pro/VL Series
• XStream Series