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DDA
Poyan

The DDA Grundfos

The DDA model is the ideal solution for complex and demanding applications where the process needs to be executed in the most reliable way. Along with the expanded capacity and measuring range up to 1:3000, it has features such as FlowControl, pressure monitoring, AutoFlowAdapt and integrated flow measurement. It is supported by additional operating modes such as weekly dosing timer for industrial applications and new functions such as automatic air purging.

Technical Information

Capacity Q :max. 30 l/h
Pressure, P : max. 16 bars
Liquid temperature :max. +45 °C

Features & Benefits

  • Click-stop mounting plate allows installation in three different positions without the use of any additional accessories. The control cube can be easily rotated to the front, left or right position. Thumbwheel and multi-colour backlit graphic, plain text LC display facilitate commissioning and operation.
  • Long life and universal, chemical resistant PTFE full diaphragm.
  • For highest dosing accuracy double ball valves
  •  Deaerating valve for easy start-up.
  • Manual dosing ml / h, I / h or gph.
  • Ml / pulse control (including memory function).
  • Analog control 0/4-20 mA (scalable).
  • A pulse-based batch function ml, l or gal.
  • A timer-based batch function (Dosing timer, cycle or week).
  • Fieldbus control (prepared for GENIbus ProfibusDP E-box).
  • Deaerating during pump standby to prevent deterioration due to automatic air locking.
  • Two Slow step steps (anti-cavitation), 50% (max. flow: 3.75 l/h) and 25% (max. flow) : 1.88 l/h, eg , for high viscosity or degassing fluids.
  • Service information display to show when service and wear part order number is required.
  • Pump against unauthorized access two-step key lock function to protect.
  • Counter for total dosing volume (resettable), operating hours, etc.
  • Re-load to factory settings, as well as Save and custom settings
  • Purification of drinking water
  • Waste water treatment
  • Pulp and paper industry
  • Textile industry
  • Cleansing water treatment
  • Food and beverage industry, dairies
  • Purification of cooling tower water
  • Treatment of low pressure boiler feedwater.
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