Conventional electromagnetic metering pumps suffer from low resistance to exposure of external liquids. With improved sealing of not only the control unit but also the pump unit, a remarkable improvement to this exposure has been achieved in the Iwaki EW series. With its tough construction and high tolerance to external liquids, the EW series can be widely used in applications ranging from incorporation into various devices, to utilisation as standard equipment in water treatment facilities.
Standard control features
• on-off
• pulse signal, (e.g. can be controlled by water meter, connector 1- 5 pin required)
• digital input (e.g. stop switch, connector 2- 4 pin required)
Summary of features and benefits
• VC version with Alumina ceramic valve balls
• VH version with Hastelloy C276 valve balls, (for caustic)
• large capacity up to 24 l/ hr
• weatherproof
• compact size, quiet and lightweight
• self primes in seconds
• optional auto air vent (AAV) to help prevent outgassing, e.g. bleach, available for pumps with 4 x 6 mm tubing.
• double level stop function
• manual vent valve (helps priming)
• high speed operation, up to 180 strokes per minute results in high resolution chemical feed and elimination of slug-feed effects
• display and electronic adjustment of stroke rate
• manual adjustment of stroke length for finer control
• double level stop function
• superior valve construction, with double ball check valves. Ball, seat & guide assembly ensures a tight seal to prevent loss of prime
• supplied with tubing, check valve and foot valve
• long lasting diaphragm. PTFE laminate over EPDM is moulded onto a solid core. Retainer plate minimises flow rate changes as pressure varies
