Liquid Handling Pumps from Watson Marlow Pumps Group

400 Series -- Model 403U/VM4

400 Series -- Model 403U/VM4 -- View Larger Image
400 Series -- Model 403U/VM4-Image
  • VM4 4 channels
  • Flow rates from 0.001 to 17 ml/min per channel
  • Ten stainless-steel rollers with low-friction bearings
  • Digital speed control via top panel mounted keypad.
  • Reversible with Max priming function.

403/VM pumps provide extremely accurate multi-channel pumping, having spring-loaded tracks with individual occlusion adjustment. The VM rotor has stainless-steel low-friction rollers for low pulsation and repeatable flow rates. The fixed position clamping block provides easy tube loading and removal. Pumpheads accept standard two-bridge manifold tubing.

With 20:1 speed control, the 0.5 to 10rpm drive provides low flow accuracy and the 2.5 to 50rpm drive provides higher flows. All pumps accept 4-20mA or 0-10V analogue signals and remote low voltage or TTL (PLC compatible) start/stop and direction switching. Two-year comprehensive warranty.


Product Category
Liquid Handling Pumps
Pump Type
Dosing Pump; Injection Pump; Metering Pump; Peristaltic Pump; Positive Displacement Pump; Self-Priming Pump; Sanitary Pump
Liquid Flow
0.004 GPM (0.02 L/min)
Power Source
AC; 115 VAC
Pump Housing Material
Industry Served