Watson-Marlow 520 Series NEMA 4X Washdown Pumps | Watson-Marlow Process Pumps


520 NEMA 4X Washdown Pumps

520 series of peristaltic pumps provides unrivalled levels of accuracy, reliability and control for the harshest operating environments. The IP66 NEMA 4X washdown cased pumps produce flow rates up to 55.5 gph at pressure up to 30 psi. 520 NEMA 4X washdown pumps are available in three models: the 520SN/R2 with manual control; the 520UN/R2 which adds analog and remote control; and the 520DuN/R2 which adds calibrated flow and RS485 control.

For overview please refer to 520 NEMA 4X Washdown Pumps Brochure.

520SN/R2 IP66 NEMA 4X manual control pumps

  • Flow rates from 4 microlitres/min up to 55.5 gph (3.5 liter/min).

  • Brushless DC motor, 2200:1 turndown 0.1 rpm resolution.

  • 0.1% set speed accuracy IP66 NEMA 4X enclosure, washdown protection for arduous conditions.

  • Corrosion resistant polyester coated case.

  • Large high visability speed/flow display.

  • Manual control and flow rate calibration.

  • MemoDose for accurate single shot dispensing.

  • Dual voltage, 115V/230V 50/60Hz and 24-hour duty rated.

  • Three year comprehensive warranty.

Fitted as standard with the new 520R2 pumphead which features a large swept volume with sprung stainless steel rollers for high accuracy. Low rotational speeds greatly increase tube life and system reliability.

520UN/R2 IP66 NEMA 4X auto/manual control pumps

  • Flow rates from 4 microlitres/min up to 55.5 gph (3.5 liter/min).

  • Brushless DC motor, 2200:1 turndown.

  • 0.1 rpm resolution, 0.1% set speed accuracy.

  • IP66 NEMA 4X enclosure, washdown protection for arduous conditions.

  • Corrosion resistant polyester coated case.

  • Large high visability speed/flow rate display.

  • Manual control with flow rate calibration.

  • MemoDose for accurate single shot dispensing.

  • Dual voltage, 115V/230V 50/60Hz and 24 hour duty rated.

  • Three year comprehensive warranty.

  • Inputs: analog 0-10V / 4-20mA software configurable and calibrated.

  • Inputs: 4 pump status inputs all accepting 5V TTL or 24V industrial logic.

  • Outputs: 4 changeover relay status outputs, 24V up to 30W user configured.

  • Outputs: 0-10V analog or 0-1258Hz speed indication output.

Fitted as standard with the new 520R2 pumphead which features a large swept volume with sprung stainless steel rollers for high accuracy. Low rotational speeds greatly increase tube life and system reliability.

520DuN/R2 IP66 NEMA 4X auto/manual RS485 control pumps

  • Flow rates from 4 microlitres/min up to 55.5 gph (3.5 liter/min).

  • Brushless DC motor, 2200:1 turndown.

  • 0.1 rpm resolution, 0.1% set speed accuracy.

  • IP66 NEMA 4X enclosure, washdown protection for arduous conditions.

  • Large high visability speed/flow rate display.

  • Manual control with comprehensive flow rate calibration by volume or weight.

  • MemoDose for accurate single shot dispensing.

  • Dual voltage, 115V/230V 50/60Hz and 24 hour duty rated.

  • Three year comprehensive warranty.

  • Inputs: Analog 0-10V / 4-20mA software configurable and calibrated.

  • Speed scaling by keypad or second analog input for drop in replacement of diaphragm pumps.

  • Inputs: 4 pump status inputs all accepting 5V TTL or 24V industrial logic.

  • RS485 network control of up to 32 pumps.

  • Outputs: 4 changeover relay status outputs, 24V up to 30W user configured.

  • Outputs: 0-10V, 4-20mA analog or 0-1258Hz speed indication output.

Fitted as standard with the new 520R2 pumphead which features a large swept volume with sprung stainless steel rollers for high accuracy. Low rotational speeds greatly increase tube life and system reliability.


York Fluid Controls Limited, York, Fluid, Controls, Limited


Liquid Handling Equipment Specialists Since 1960

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Established in 1960, York Fluid Controls Limited is a leading stocking distributor of fluid transfer and process pumps, positive displacement and centrifugal pumps, liquid filtration, valves, mixers and tanks. York offers an extensive range of services, including a complete repair and test centre, an engineering department, custom fabrication, and a machine and assembly shop. York serves organizations of all sizes and from all industries, throughout Canada. Reliability, service excellence, a desire to solve customers' problems and the highest ethical standards underpin this family-owned company and all that it does. Learn More

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