Viking : Behind The Rotor Seal Series

Behind the Rotor Seal Series Internal gear pump provide a simple, low-maintenance, heavy-duty construction and unique advantages

The "B Series" heavy duty internal gear pumps include both 4124B (non-jacketed) and 4224B (jacketed) models with Behind-The-Rotor (BTR) dynamic shaft seals. By locating the mechanical seal immediately behind the rotor, this offers several advantages over traditional heavy-duty internal gear pumps with stuffing box seals. Bracket bushing has no contact with the pumped liquid, All pumped liquid is contained in the casing area, which enables superior flushing to clean the casing.  

Performance Criteria:

  • Capacity: To 1900 l/min
  • Pressure: To 14 bar
  • Temperature: 343°C
  • Viscosities: To 55000 cSt
  • Sizes: 1" to 6"


4124B, 4224B

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