Grundfos 96654373 3/4HP 115V 3-Speed Wet Rotor Circulator Pump UPS 53-55/57 F

Description

Grundfos UPS 53-55/57 F Wet Rotor Circulator Pump

The Grundfos 96654373 (Model UPS 53-55/57 F) is a high-performance, three-speed wet rotor circulator pump engineered for demanding hydronic heating and cooling applications. With a durable cast iron housing and a corrosion-resistant stainless steel impeller, this pump delivers reliable, long-lasting performance in a wide range of closed-loop hydronic systems.

Key Features

• Motor Output: 3/4 HP for robust circulation in larger hydronic systems
• Voltage: 115V AC, Single Phase — compatible with standard residential and light commercial electrical supplies
• Speed: 3-speed operation at 3450 RPM for flexible flow and head adjustment
• Wet rotor design eliminates the need for external bearings and seals, reducing maintenance requirements
• Cast iron housing provides superior strength and durability
• Stainless steel impeller resists corrosion for extended service life
• Suction and discharge connections: 2″, 2-1/2″, and 3″ non-ANSI 4-bolt flange configurations for versatile installation

Construction & Design

The wet rotor design means the rotor and bearings are lubricated and cooled by the system fluid itself, resulting in a quiet, virtually maintenance-free operation. The cast iron volute housing is built to withstand the rigors of continuous hydronic system use, while the stainless steel impeller ensures long-term corrosion resistance even in treated water systems.

Connections & Compatibility

• Flange sizes: 2″, 2-1/2″, and 3″ suction and discharge connections
• Non-ANSI 4-bolt flange pattern for straightforward system integration
• Suitable for hydronic heating, chilled water, and closed-loop circulation systems

Specifications

• SKU: 96654373
• Model: UPS 53-55/57 F
• Horsepower: 3/4 HP
• Voltage: 115V AC
• Phase: Single Phase
• Speed: 3-Speed, 3450 RPM
• Housing Material: Cast Iron
• Impeller Material: Stainless Steel
• Connection Type: Non-ANSI 4-Bolt Flange
• Connection Sizes: 2″, 2-1/2″, 3″
• Pump Type: Wet Rotor Circulator