BN Range

BN Range

The BN range pumps have a modern, compact, low-cost and user friendly design.

Drives & Base Plates Accessories Shaft Seals

Conveying Medias

  • For low to highly viscous media with or without solids 

Properties

  • Conveying capacity: 30 l/h – 500 m³/h (0.132 USGPM – 2,200 USGPM)
  • Pressure: up to 48 bar (700 psi)
  • Short, compact design with directly flange-mounted drive (block type)
  • Enhanced combination options: block design available in all sizes and pressure stages

Benefits

  • Low-cost due to the removed bearing frame, flexible coupling and common base plate
  • Easy maintenance due to the plug-in connection between the rotating unit and drive
  • Separate pump bearing omitted

DRIVES & BASE PLATES

The figures below are examples to demonstrate the various drive and baseplate versions. seepex pumps can be delivered with geared motors, variable speed drives and frequency-controlled drives of all well-known manufacturers. The drive types can be used for all ranges.

Base plate B with geared motor

Line drawing of a SEEPEX baseplate for B geared pumps

Base plate API 676 (NS) with geared motor

Line drawing for the SEEPEX baseplate for API 676

Accessories

Our guarantee: this stainless steel protection shields the universal joint sleeve from mechanical damage from oversized plastic, wooden, glass or metal parts. SEEPEX joints with universal joint protection are also guaranteed 10,000 operating hours.

SEEPEx universal joint protection

For a long pump service life: a temperature sensor installed in the stator checks the temperature between rotor and stator and compares it to the limit temperature set in the TSE control. When this value is reached, the control switches off the pump and triggers an alert.

The SEEPEX dry-running protection device monitors the temperature of the stator during operation and protects it from premature wear by switching off the pump when the limit is reached.

SEEPEX dry running protection device

Help against wear: with the stator tensioning device, a worn stator can be evenly retightened so that the original compression between the rotor and the stator is restored and the pump performs again at its full capacity.

SEEPEX adjustable stator retensioning device

Protection against over-/underpressure: a diaphragm pressure gauge with open flange for highly viscous media switches as soon as the pressure drops below or exceeds the set value.

SEEPEX over pressure and low pressure protection device

For precise metering: with this metering device you can set the required number of rotations, making it possible to adjust the flow rate to the exact requirements.

SEEPEX metering device

For shaft seal protection: the seal barrier system is fed with a buffer liquid. Upon request, it can be equipped with a flow meter that ensures trouble-free operation.

SEEPEX lantern ring supply unit

Shaft Seals

  • Easy maintenance
  • Cost-effective standard sealing
SEEPEX gland packing
Conveying Material

with or without solids, abrasive

Pressure Range
-0.3 - +2 bar
-4.4 - +30 psi
  • Gland packing with standard lantern ring or grease lantern ring
  • Feed rate of buffer fluid adjustable
  • Options: Additional labyrinth seal, adjustable rate of buffer liquid for vacuum operation, additional flushing connection
  • Optional: Lubricating device
SEEPEX Gland packing grease chamber seal cage
Conveying Material

with or without solids, abrasive, heat and/or shear-sensitive

Pressure Range
-0.85 - +2 bar
-12.3 - +30 psi
  • Double-acting
  • Design with elastomer bellows, metal springs or spring sets
  • Independent of direction of rotation Unbalanced
  • Disengaging device
SEEPEX double acting mechanical seal
Conveying Material

from low to high viscosity, with or without solids, abrasive, crystallizing, corrosive, toxic

Pressure Range
-14.5 - +363 psi
  • Cartridge unit
  • Single or double-acting
  • Independent of direction of rotation Balanced or high pressure balanced
SEEPEX Mechanical Seal Cartridge
Conveying Material

from low to high viscosity, with or without solids, abrasive, adhesive, crystallizing, corrosive, toxic

Pressure Range
-1 - +25 bar
-14.5 - 363 psi
  • Design with elastomer bellows, metal springs or spring packs
  • Independent of direction of rotation, balanced/unbalanced
  • Disengaging device
  • Food grade design with FDA materials
  • Quench design as an option
SEEPEX Single acting mechanical seal
Conveying Material

from low to high viscosity, with or without solids, abrasive, crystallizing

Pressure Range
-0.15 - +25 bar
-2.2 - +363 psi