Pentair MasterTemp 125 1-1/2" FBT Union Package [Qty 2] (474974) aquachek An air switch is useful

An air switch is useful because it helps convert pneumatic button action into electrical control

That matters because a jet assembly should feel properly integrated into the seat once installed

Raypak part 100-10000705 for accurate matching

Supports targeted repair of worn or damaged hardware

Pentair MasterTemp 125 1-1/2" FBT Union Package [Qty 2] (474974) aquachek An air switch is usefulBuilt for service focused pool repairs, this MasterTemp 125 1 1 2" FBT Union Package [Qty 2] helps restore reliable operation without replacing a larger equipment assembly. It is useful for targeted repairs where matching the correct model, rating, size, or connection style is more important than using a generic substitute. For MasterTemp 125 heater work, correct component selection helps protect heating performance, water side sealing, ignition