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Valves For Chemical Dosing
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Herco Wassertechnik GmbH
Neckar, Germany
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Overflow valves guard against overpressure for both the pressure-side installations and the pump. Back pressure valves keep the back pressure that the pump needs steady. Pressure-retaining and overflow valve functions are combined in multifunctional valves. In the event of maintenance, they also function to empty the discharge line and vent the pump.

Utilization of Valves For Chemical Dosing

  1. Installing overflow valves is recommended for all pressurized dosing systems.
  2. Back pressure valves are used to stop a siphon effect and when the back pressure is excessively low or variable.

Advantages of Valves For Chemical Dosing

  1. Improvement in dosing accuracy as a result of continuous back pressure (DV, MFV)
  2. safeguarding the device from excessive pressure that is not permitted (SV, MFV)
  3. The dosing head's venting (MFV)





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