美国进口
Imported from USA

NRF系统润滑铸铁循环泵
NRF System Lubricated Iron Body Circulators


美国贝尔-高赛特
Bell & Gossett

A flanged in-line system lubricated circulating pump designed specifically for quiet operation in a closed hydronic heating system.

Models: NRF-9F/LW, NRF-22, NRF-25, NRF-33, NRF-36, NRF-45

Features and Benefits

  • High starting torque for dependable seasonal start-ups (Up to 80% more than competing circulators)
  • Unique B&G DuraGlide Bearing System assures years of trouble-free start-ups
  • Closed impeller design improves operating efficiency
  • Backed by B&G's representatives and a 3-year warranty–the best in the business
  • DuraGlide Bearing System incorporates several components working together to eliminate seasonal freeze-up
  • Stabilized, heat resistant, polypropylene impeller, its closed design improves operating efficiency
  • Self-cleaning particle shield protects the shaft and bearings from system start-up debris
  • One-piece, high-nickel stainless steel stator can isolates the stator from system fluid and maintains precision bearing alignment for longer bearing life
  • Carbon bearings, diamond-like ceramic shaft and generous clearances are more resistant to lime, chloride and oxide build-up
  • Face plate and rotor sleeve feature corrosion resistant stainless steel construction for longer life

Models – Part Number (see Brochure A-115B for dimensions & weights)

NRF – 9F/LW - 103267
NRF – 22 - 103251
NRF – 25 - 103417
NRF – 33 – 103350, 103352
NB F – 33 – 103351LF, 103353LF
NRF – 36 - 103400
NRF – 45 - 103404
NBF-22 103252

Bell & Gossett offers several useful engineering tools for easy sizing of every area of a building. Simple to navigate software gives you accurate information and up-to-date documentation downloadable straight into your submittal package.

Some tools require a registered account: New User Registration | Existing User Password Help

ESP-Design Plus Bell & Gossett: Multi-Stage, Pressure Booster Packages, Wastewater, Vertical Turbines
ESP-Plus Bell & Gossett Pump Selection: Circulators, End Suction, Closed-Coupled, Inline, Double Suction
ESP-Tanks Bell & Gossett Compression/Expansion Tanks and Accessories (downloadable app)
ESP-Thermal Bell & Gossett Gasket Plate & Frame and, Brazed Plate Heat Exchangers
ESP-UTUBE Bell & Gossett U-Tube Heat Exchangers
ESP-Parts Parts Selection
Steam-2000 Steam 2000 Selection
Steam-1140 Series 1140 Steam Service Regulators
Water-1140 Series 1140 Water Service Regulators
Steam-Traps Steam Traps Selection
CAD Drawings CAD Drawings
System Syzer System Syzer (available online, PC download, and iOS app)
System Syzer Psychrometry System Sizing related to coil cooling (link downloads .exe file)
Steam-Pipe Steam Pipe Sizing
Steam-Loss Steam Loss Through Failed Trap
Flash-Steam Flash Steam Sizing
Condensate-Pipe Condensate Pipe Sizing
Mobile Catalog iOS iPhone & iPad Mobile Product Catalog
Mobile Catalog Android Android Device Mobile Product Catalog