Grundfos UP 15-18 B7 7.79GPM 230V Bronze Drinking Water Circulator / Recirculation Pump

Grundfos UP B circulator pumps have a bronze pump housing for drinking water applications while Grundfos UP N have a stainless-steel pump housing. Both variants are recommended for underfloor heating systems as the pumped liquid may often become aerated, causing corrosion in cast iron pump housings. The pump is of the canned rotor type, i.e. pump and motor form an integral unit without shaft seal and with only two gaskets for sealing. The bearings are lubricated by the pumped liquid.

Technical:

• Speed Number:  1
• Max flow:  14.5 US gpm
• Rated Flow: 7.79 GPM
• Head max:  13.8 ft
• Maximum operating pressure  145 psi
• Approvals on nameplate:  UL, CSA
• Ceramic shaft and radial bearings
• Carbon axial bearing
• Stainless Steel rotor can and bearing plate
• Designed for hot water recirculation, drinking water applications, or underfloor heating systems

Material:

• Pump housing:  Bronze
• Impeller:  Composite, PES

Installation:

• Maximum ambient temperature:  104 °F
• Ambient max at 176°F liquid  176 °F
• Maximum operating pressure  145 psi
• Flange standard:  USA Sweat
• Type of connection:  Bronze Sweat
• Pipe connection:  3/4" Sweat
• Pressure stage:  10
• Port-to-port length:  6 3/8 in

Liquid:

• Liquid temperature range  35.6 .. 230 °F

Electrical Data:

• Number of poles:  2
• Max. power input:  96 W
• Rated power - P2:  0.04 HP
• Main frequency:  60 Hz
• Rated voltage:  1 x 230 V
• Current in speed 3  0.4 A
• Capacitor size - run  2 µF/400 V
• Insulation class (IEC 85):  F
• Motor protection:  CONTACT
• Thermal protect:  internal