EXTERNAL GEAR PUMPS

With our diverse standard and high performance gear pump range we are able to serve all your needs and respond to any challenge. Our gear pumps are robust, self-priming and are designed for your specific application. We offer explosion proof and seal-less pumps for the petrochemical industry, pumps with minimal surface roughness for the pharmaceutical and food industry and high pressure pumps for dynamic applications etc. Our pumps have proven their quality and efficiency for over 85 years.

On demand, we can provide external gear pumps which are API, ATEX,TR-CU 10, TR-CU 12 and TA Luft compliant.

External gear pumps are self-priming, non-pulsating and reversible pumps that work best on clean, lubricating fluids with a viscosity thicker than water. Two gear teeth, one idler and one driver, mesh together to transfer the liquid.

Zeilfelder high performance pumps last longer and are more effective than standard pumps. We choose the pump materials carefully depending on specific requirements and objectives of your application.

  • grey cast iron
  • ductile iron
  • cast steel
  • steel
  • stainless steel
  • hastelloy
  • bronze
  • aluminium
  • aluminium-based bronze
  • tantalum
  • Iridium
  • titanium
  • ceramics
  • plastic

Because of the balanced construction and bearings on both sides of the shafts, the pumps are capable of non-pulsating flow and high pressures.

Pressure: up to 120 bar
Viscosity: up to 150.000 mPas
Flow rates: up to 4.350 l/min (260 m³/h)
Suction lift: up to 6 m
Temperature: -60 to 450°C

GEAR PUMPS: ZK BLUE Series

For high end applications, high process efficiency and quality

The ZK BLUE Series representes the low volume high precision part of our gear pump range. The ZK Blue Series are mainly milled from any type of steal, but can as well be maode out of Titan and Ceramics.

On demand, we can provide external gear pumps which are API, ATEX,TR-CU 10, TR-CU 12 and TA Luft compliant.

Pressure: standard 25 bar (optional up to 120 bar)
Viscosity: up to 150.000 mPas
Flow rates: 0,4 up to 300 l/min (0,025 to 18 m³/h)
Speed: up to 3000 rpm
Suction lift: up to 6 m
Temperature: -60 to 450°C
Materials: all available materials
Seals: lip seals, packing, single or double mechanical seals, magnetic coupling

GEAR PUMPS: ZH/ZV BLUE Series

For high end applications, high process efficiency and quality

The ZH/ZV BLUE Series represent our heavy duty, high flow and high quality gear pump range. The casing is made out of casting steel materials.

On demand, we can provide external gear pumps which are API, ATEX,TR-CU 10, TR-CU 12 and TA Luft compliant

Pressure: standard 25 bar (optional up to 120 bar)
Viscosity: up to 150.000 mPas
Flow rates: 1 up to 4.350 l/min (0,03 to 260 m³/h)
Speed: up to 3000 rpm
Suction lift: up to 6 m
Temperature: -60 to 450°C
Materials: all available materials
Seals: lip seals, packing, single or double mechanical seals, magnetic coupling

GEAR PUMPS: PQ GREEN Series

For standard applications

With our diverse standard and high performance gear pump range we are able to serve all your needs and respond to any challenge. Our gear pumps are robust, self-priming and are designed for your specific application.

Pressure: up to 20 bar
Viscosity: up to 150.000 mPas
Flow rates: 10 to 4.120 l/min (0,1 to 250 m³/h)
Speed: up to 1.780 rpm
Suction lift: up to 4 m
Temperature: -20 to 250°C
Materials: all available materials
Seals: lip seals, packing, single or double mechanical seals, magnetic coupling