The 1.5 inch standard pump union is a universal pump union used for complete assembly of your replacement pump. Should fit any 1.5 inch end on most pumps.
Master Spa Parts offers the perfect replacement part for the main air valve knob on your Master Spas® H2X swim spas. The Master Air Control Handle, Width 3.25 Inch is compatible with 2008 and 2009 models of the H2X Cross Trainer, H2X Swim Spa, H2X Cross Trainer SJ, and H2X Cross Trainer 2.
The 2 inch Pump Split Nut is used as a replacement for the pump union that would need to be re-plumbed. You can cut off the old pump union and replace with this split nut. This comes with the 2 screws that screw and hold it together.