Liquid Handling Pumps from Watson Marlow Pumps Group

620R NEMA 2 (IP31) Pump -- Model 620Di/R

620R NEMA 2 (IP31) Pump -- Model 620Di/R -- View Larger Image
620R NEMA 2 (IP31) Pump -- Model 620Di/R-Image
  • Keypad entry of flow rates from 0.00026 gpm to 4.23 gpm (0.001 - 16 liter/min)
  • Dispenses 500ml to within +/-0.5% in 4.2 seconds
  • Stores up to 50 dispensing programs
  • Non-drip function eliminates drips at dose end
  • Ramp function for delicate fluids prevents frothing/splashing and enhances accuracy
  • PIN-secure Process Protection; full pump configuration protected by dual operator/supervisor PIN codes
  • Export batch records via RS232 to a PC or printer for cGMP requirements
  • Brushless DC motor, 2650:1 turndown, 0.1% set speed accuracy
  • NEMA 2 vented wipe-down enclosure suitable for dry industrial environments
  • Chemically resistant powder coated casing (exterior grade polyester)
  • Wire-free guard-switching stops the pump if the pumphead is opened while running
  • Remote control (contact closure or 5V TTL to 24V industrial logic) or RS232 network control
  • Digital status outputs (configurable) via four relays
  • Analog speed control (0-10V or 4-20mA) and feedback (0-1478Hz)

Fitted as standard with the 620R Mark II pumphead for continuous tubing (3.2mm wall thickness) in bore sizes of 6.4mm, 9.6mm, 12.7mm or 15.9mm. The 620R is ideal for hygienic single-use applications. The pumphead can easily be positioned in two orientations (ports right or ports down).


Product Category
Liquid Handling Pumps
Pump Type
Dosing Pump; Injection Pump; Metering Pump; Peristaltic Pump; Positive Displacement Pump; Self-Priming Pump; Sanitary Pump
Discharge Pressure
30.0 psi (21.09 m of Water)
Liquid Flow
4.230 GPM (16.02 L/min)
Power Source
AC; 115 VAC, 230 VAC
Pump Housing Material
Industry Served