Waterway 3721621-1D Executive 56-Frame 4HP Dual-Speed Spa Pump, 2in. Intake, 2in. Discharge, 230V

SKU: 3721621-1D
Waterway Executive 56 Pump
Regular Price: $399.99
Availability: In Stock
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About the Waterway 3721621-1D
The Executive 56-Frame spa pump has increased efficiency with its 4HP motor and 2-Speed design.

Spa Pump Features:

  • Executive 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
  • Larger 2" intake for improved flow performance and reduced noise
  • Large 6-1/2" diameter wet end for higher head pressure
  • 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
  • Viton seals
  • Dimensions (H x W x L): 9.08" x 8.05" x 10.375"

More Information

The Executive 56-Frame spa pump has increased efficiency with its 4HP motor and 2-Speed design. With its 56-Frame construction, the Executive spa pump features a cooler operating temperature which delivers added strength and a longer motor life. With features such as a large 2" intake for better water flow, a split capacitor for minimum energy consumption, and Viton seals for durability, this spa pump operates quietly and effectively. With two double-shielded ball bearings and a rotatable wet end, the Executive 56-Frame spa pump delivers dependable performance.

Waterway 3721621-1D Specifications



Product Reviews
Average Rating:
4.50 average based on 6 reviews
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Mark said:
Location: seattle wa
Fast Shipment and delivery, and other customer reviews helped!
9 months ago
I was first concerned if I got the right one, but after comparing measurements it was the right one, though the description threw me off a bit since the actual measurement is 2 3/8, but it all worked out. I read the reviews from previous customers about the wiring and do agree, the specs on the site are different than how the wiring harness on this one came. Taking their reviews into perspective, I hooked it up and had no problems. The spa pump is working great!
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PoolSupplyWorld said:
9 months ago
Glad to hear it's working for you. We'll look into the wiring diagram, and see if we can get the right material up as soon as possible! -Roy
Mike M. said:
Location: Parma, Ohio
5 stars
10 months ago
awesome service fast delivery
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Jerry said:
2 years ago
The person I talked with while placing my order was very helpful. I placed my order late on a Friday afternoon. The pump arrived early on Tuesday morning. It should come with a bold faced caution to double check the wiring diagram. I too blew two fuses at $10 a piece before I discovered the posts on the new motor were different then they were on the old one.
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Bill said:
3 years ago
The pump arrived quickly and in good condition. Disconnected the old pump and connected the new pump. I followed the included wiring directions which were the same as the old pump. Blew the main circuit board fuse (30 amps). Thinking I must not have cleared the wiring cover, I removed it and got another fuse ($10 bucks). Blew that fuse too. Went to another spa place, got another $10 fuse and the guy there said "I know what is wrong". He said it happened to him too & he has over 35 years of experience. .. more
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Harold d. said:
3 years ago
Hi. I received my product in Good time and good condistion, installed both pumps and operating great. Thank you and I will be referring you to all pool service tech. And I will be looking for PH,CHL,ALK,SALT,Water hardness and moor. If you have these digatel meters pleas let me no. Thank you. Harold Denegar
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