Description
Waterway spa pump 56 frame, 230v, 4.0HP with 2 1/2 inch suction and discharge connections replaces 3721621-1V. ( replaced by MV-40226-25 that is also 2 1/2 x 2 1/2″)
This VIPER pump has following characteristics.
Spa Pump Features:
- Viper wet end designed specifically for 56-frame motors
- Two double shielded ball bearings with moisture resistant grease for quieter operation and longer life
- Two speed motors have four sets of insulated windings for increased efficiency
- 56-frame motor for added strength, cooler operating temperature, and longer motor life
- Large 2-1/2″ intake for improved flow performance and reduced noise
- Large 8″ diameter wet end for increased volume capacity
- Split capacitor, (start and run) for less energy consumption
- Thermally protected to extend life expectancy of motor
- Highly versatile wet end can be rotated every 90 degrees
- Dimensions (H x W x L): 9.08″ x 8.05″ x 15.72″
| Complete Pump Type | Portable Spa Pump |
| Speed | 2 Speed (2-Spd) |
| Motor Voltage | 230v |
| Drain Plug Location | 3,4,6,9 o`clock |
| Pump to Motor Foot Types | 1 |
| Suction Style | Center |
| Suction Connection (Physical Dimension) | 3-11/16″od |
| Suction Connection Type | Male Buttress Thread (mbt) |
| Suction Pipe Size | 2-1/2″ |
| Discharge Style | Side |
| Discharge Connection (Physical Dimension) | 3-11/16″od |
| Discharge Connection Type | Male Buttress Thread (mbt) |
| Discharge Pipe Size | 2-1/2″ |
| Horsepower | 4.0hp |
| Motor Frame | 56 Frame Thru-Bolt |
| Motor Amperage/Wattage | 12.0A/4.4A |
| Manufacturer | Waterway |
| Pump Model | Viper |
| Manufacturer Impeller Number | 310-2200 |
| Volute Fastening Type | 8 Screws |
| Volute/Sealplate Number | 315-1500 |
Waterway 4HP 230v 2-speed 56frame pump with 2 1/2 inch plumbing connections for 2 1/2 inch inner diameter hose or pipe (3 7/16″ across pump threads)
Need to adapt down to 2 inch plumbing on one side of the pump? See 400-5990 adapter 2 1/2 ” – 2″ slip.
or see alternate pump with 2 1/2″ x 2 1/2″ plumbing connections 56WUA400A-II LX 4HP pump









