Grundfos UPS15-55SFC (Grundfos SKU# 59896773) is a 1/8HP, 3-speed Stainless steel Circulator Pump with removable Integral Check Valve and flanged connections. 3 speeds of the Grundfos UPS15-55SFC model make this pump very versatile and allow to match the system's requirements by adjusting the speeds (Low/Med/High), thus optimizing it's performance. Stainless steel body of the circulator resists corrosion and allows to use UPS15-55SFC model in a variety of applications ranging from open loop radiant and hot water recirculation, to closed loop hydronic heating and even chilled water cooling. This model also replaces a number of competitive models from Taco, Bell & Gosset, Wilo and others. Features: Ceramic shaft and radial bearings Carbon axial bearing Stainless steel rotor can and bearing plate Corrosion-resistant impeller, Composite, PES Stainless steel pump housing Check valve Technical Specifications: Speed Number: 3 Max flow: 25.1 US gpm Head max: 18 ft Liquid temperature range: 35.6 - 230 F Maximum operating pressure: 145 psi Approvals on nameplate: UL, CSA Pump housing: Stainless steel Pump housing: DIN W.-Nr. 1.4301 Pump housing: AISI 304 Impeller: Composite, PES Maximum ambient temperature: 104 F Ambient max at 176 F liquid: 176 F Maximum operating pressure: 145 psi Flange standard: USA Oval Type of connection: S.S. Flange Pipe connection: 2 - Bolt Flange (GF 15/26) Pressure stage: 10 Port-to-port length: 6 1/2" Number of poles: 2 Power input in speed 1: 58 W Power input in speed 2: 77 W Max. power input: 87 W Rated power in speed 1: 1/8HP Rated power in speed 2: 1/10HP Rated power in speed 3: 1/12HP Main frequency: 60 Hz Voltage: 115V Current in speed 1: 0.53 A Current in speed 2: 0.69 A Current in speed 3: 0.75 A Capacitor size - run: 10 mF/180 V Insulation class (IEC 85): F Gross weight: 6 lbs Warranty: 2 years from date of installation.