Bell & Gossett NBF-12U/LW

Bell & Gossett

Circulator Pump, 1/40 HP, Noryl Impeller

NBF-12U/LW 1338304
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ItemCirculator Pump
TypeOpen Loop
StyleWet Rotor, Maintenance-Free
Housing MaterialBronze
Face to Face Dimension (In.)6-1/8
Max. Temp. (F)225
Max. Working Pressure (PSI)150
Flange/Union IncludedNo
Shut-Off (Ft.)12
Impeller MaterialNoryl
Shaft MaterialCeramic
Thermal ProtectionYes
GPM of Water @ 1 Ft. of Head18
GPM of Water @ 2 Ft. of Head15
GPM of Water @ 3 Ft. of Head13.5
GPM of Water @ 4 Ft. of Head12
GPM of Water @ 5 Ft. of Head10
GPM of Water @ 6 Ft. of Head8.5
GPM of Water @ 7 Ft. of Head7
GPM of Water @ 8 Ft. of Head5.5
GPM of Water @ 9 Ft. of Head3.5
GPM of Water @ 10 Ft. of Head2.5
GPM of Water @ 11 Ft. of Head0.5
Length (In.)5-5/16
Width (In.)4-7/8
Max. GPM @ Head (Ft.)18 @ 1
Best Efficiency GPM @ Head (Ft.)7 @ 7
Min. GPM @ Head (Ft.).5 @ 11
Bearing TypeDouble Sintered Carbon
Additional FeaturesSealless
Manufacturers Warranty Length3 Years
ComplianceCertified For Use In Potable Water Applications in CA and VT
Weight 6.700000


Circulator Pump, Maintenance Free, Wet Rotor, 1/40 HP, 1 Phase, Voltage 115, 0.48 Amps, Inlet/Outlet Union, .5 @ 11 Ft Head Min GPM , Housing Material Bronze, Max. Temp. 225 F, Max. Working Pressure 150 PSI, Shut-Off 12 Ft., 2800 RPM, Impeller Material Noryl, Thermal Protection, Additional Features Sealless, Warranty Length 3 Years

  • California Proposition 65 Warning: This product contains a chemical known to the State of California to cause cancer. Warning: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm.

Hot Water Circulating Pumps
  • 1-phase models are thermally protected Cast-iron units are not for potable water
  • Wet Rotor, Maintenance-Free
  • DuraGlide bearing system helps provide high starting torque for dependable seasonal startups. Self-cleaning particle shield protects shaft and bearings from start-up debris. Closed impeller design ensures efficient operation. Ceramic shaft, carbon bearings, and high-nickel stainless steel rotor. Bronze units are certified for use in potable water applications in CA and VT.
  • Max. working pressure: 150 psi Max. working temp.: 230 F (bronze); 240 F (cast-iron)

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