• Flow rates from 0.00026 gpm to 4.23 gpm (0.001 - 16 liter/min)
• IP66/NEMA 4X wash-down and dustproof enclosure suitable for heavy industrial environments
• Chemically resistant powder coated casing (exterior grade polyester)
• Brushless DC motor, 2650:1 turndown, 0.1% set speed accuracy
• Large speed/flow display with easy-to-clean membrane keypad
• Digital speed adjustment with choice of 0.1rpm, 0.5rpm, 1rpm, 2rpm, 5rpm and 10rpm step changes
• The TUBING is as important as the pump because
• Wire-free guard-switching stops the pump if the pumphead is opened while running
• Dual voltage range; 100-120/200-240V 50/60Hz

Choose the 620SN for manual control, the 620UN for analog auto-control and the 620DuN for manual, auto-analog and RS485 control. The 520UN accepts 0-10V, 4-20mA, 5V TTL and 24V industrial logic inputs. It provides 0-10V, 0-1258Hz analog speed, 5V TTL, 24V logic outputs. The 520Du has an additional 4-20mA output.

A Watson-Marlow Value for Life pump with three year warranty