Waterway Pumps, Spa Pump, 3722021-1D, 37220211D, P250E52024 PF-50-2N22C, PF-45-2N22C, Spa Pump, Hot Tub Pump PF-50-2N22M, PF-40-2N22M, TT506, R63MWENB-4728, 3722021-0T7GDY, 5kcr49wn2370bx

3722021-1D Waterway Pumps 2-speed, 230V, 16.4/4.8A Executive 56 frame 6.5" diameter, for 2"pvc pipe size, 3.1" diameter threads on inlet/outlet, SD/CS. High performance Water Way Hot Tub Pump, very strong A.O. Smith motor, split capacitor design, double shielded ball bearings. Replaces older Executive Pumps with Franklin or Century Motors. Viton Seals. PF-50-2N22C

P250E52024, labelled as 5hp but often relabeled 6hp or 7hp by spa manufacturers, 37220211d, Waterway pumps are manufactured by Waterway Plastics and Made in the U.S.A. This pump is sometimes available with a US Motors motor # TT506. NOTE: 3.1" OUTSIDE DIAMETER INTAKE THREADS. Sometimes labelled 6.0 hp, or even 7.0 hp, TT506, R63MWENB-4728

Can be labelled by one of these 'model numbers', which do not completely define the product like a part number does:
PF-40-2N22M, PF-40-2N22MC, PF-50-2N22C, PF-50-2N22M6, PF502N22C, PF-50-2N22M, PF-50-2N22F, PF402N22M

and if you go by the model number, please carefully verify your motor amps rating and the outside diameter of your intake and discharge threads. Any doubts, please email us a few photos and we will help verify for you. email to: [email protected]

This big 16.4 amp pump can be used to replace the old Cal Spas Dually pump this requires a re-plumbing job of course, if you are replacing the old G.E. 5kcr49wn2370bx, or Century