Waterway Viper Pump 2 Spd - 3HP
This Waterway Viper hot tub pump is unique in that it has a much higher GPM flow rating than the Waterway Executive 56 model. Rated for 3HP and 310 GPM on high speed and 150 GPM on low speed, it features 2 speeds and has the large intake and discharge threads that are both 2.5" (3-5/8" Actual).

Discharge Threads
2.5" intake threads (Actual 3-5/8" OD).
2.5" discharge threads (Actual 3-5/8" OD).
2 x flat gaskets are included with the pump.

Electrical Specs
10.0 Amps high speed (3450 RPM)
3.4 Amps low speed (1725 RPM)
220-240 Volts, 60 Hz
Electrical cord is not included with the pump.

Discharge Position
Ships with discharge at factory default position.
Discharge can be rotated if required, Instruction Video
Compatible Replacement for:
Waterway P/N 3721221-0V
Waterway PV-30-2N22C
Waterway PV-20-2N22M
AquaFlo XP3, 10 Amp model
Whats Included:
1 x Waterway Pump P/N 3721221-1V
2 x Flat gaskets
Product Note:
Optional barb P/N 672-4350 Sold Separately
For use in hot tubs only
Questions ? We can help, Contact UsImportant.
The Waterway Viper hot tub pump is only suitable to replace an existing Viper pump due to the high volume of water it pumps per minute GPM.
The Viper is also the only Waterway pump available with a 2-1/2" intake and discharge.
When and how will my order ship?
Orders placed before 10am EST Monday to Friday excluding holidays typically ship same day for items in stock at one warehouse in London Ontario. Most orders leave the warehouse within 48 hours during business days. If item(s) on your order are back ordered or sold out before your order can be filled, a follow up email will be sent to you. Any orders with Special Order items will ship when the Special Order items arrive at the Depot in London Ontario.
Free Ground Shipping
Free shipping is available on orders of $69 before tax to most locations in Canada, excluding Nunavut, Yukon, Northwest Territories, remote/beyond zones.
$9.00 Flat Rate Standard Ground Shipping
$9.00 Flat rate standard ground shipping is available on orders under $69 before tax to most locations in Canada, excluding Nunavut, Yukon, Northwest Territories, remote/beyond zones.
UPS Express Shipping
UPS Express* delivery is available for an additional fee at checkout to select areas in Canada. Please note that the transit time for the package is tracked by UPS starting from the day the order is picked up at the warehouse in London, Ontario, not from the day the order is placed online or by phone.
*UPS delivery business days are Monday to Friday 9am up to 8pm. All Canadian holidays are excluded and do not count as a business day.
In-Store Pickup
In-store pickup is available at the London, Ontario location only. You will be notified via email when your order is available for pick-up. Please wait for the email as your order may not be available for pick up earlier. Orders that have not been picked up within 30 days of the order date may be cancelled and refunded to the original method of payment.
Your product is covered by a 12 month Warranty or more if you opted for the extended warranty. Make sure you register your product.