Pool Pump | Waterway | 3421821-1U | 4.5 HP, 2 Speed, 48 Fr | Cast Iron, Chem Res

Waterway 2-Spd Ex 2 48-Fr Pump, 4.5Hp (model 3421821-1U) powers reliable two-speed circulation for your pool, moving water through the filter and back to the basin with consistent flow. By tailoring speed to the task—high speed for rapid circulation and low speed for steady filtration—the pump helps keep water clear and balanced without overworking the system. Designed around a 48-Fr frame, this unit fits standard pool installations and works with typical filtration setups to support healthy water year-round, even during peak season demands.

• Two-speed operation for flexible flow control between high-demand cleaning and steady filtration.
• 4.5 horsepower motor delivers robust performance for mid- to large-size pool systems.
• 48-Fr frame compatibility for standard pool equipment and plumbing.
• Effective circulation through your pool’s filtration loop to support clear, balanced water.

Discover improved circulation and easier maintenance with the Waterway 2-Spd Ex 2 48-Fr Pump. Add to your pool setup today for healthier water with less effort.