4hp 230v 2-Speed Waterway Spa Pump Side Discharge 3721621-1D


4HP 230V 2-Speed Waterway Spa Pump Side Discharge | 56 Frame Executive | 3721621-1D

  • 4 HP 3450/1725 RPM, 2-Speed, 12.0/4.4 amps, 230V 60hz.
  • Large 6.5″ diameter wet end for higher head pressure.
  • Overall Length = 17″ Height 8.22″; Automatic Overload Protection.



Please Read: There is no industry standard for Unions. The various brands have their own unique style, which means you must use the unions provided with our spa pump. If your heater is directly coupled to the spa wet end, then our pump will probably not work as the union will most likely be different. Be sure to look at the motor voltage, not the voltage supplied to the spa to determine the correct pump voltage. The pump does not come with a power cord. The connection diagram for the new pump is located on the motor name plate. The wet ends can be rotated by simply loosening the motor thru bolts and turning the pump head. Not Self Priming-Water must be above pump head in order to operate properly. 2″ refers to the size of your PVC plumbing supply lines. It has nothing to do with the size of the union nuts, the size of the threads on the wet end or the inside diamater of the inlet/outlet. The PVC pipe slides into the union and is glued with PVC cement. 2″ plumbing means you have 2″ schedule 40 PVC supply lines (2″ I.d. ; 2 3/8″ OD on the line) circumference = 8″ (wrap a tape measure around the pipe). If you only require a one speed pump, this pump will work fine. Simply just use the high speed connection. 2″ inlet & outlet measures 3″ O.d. on the threads.


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1. Items must be returned within 30 days after the purchase date.
2. Items must be unworn, undamaged and in original packaging.

4hp 230v 2-Speed Waterway Spa Pump Side Discharge 3721621-1D