Chemical Dosing Systems

For over 65 years, the German company, Seybert & Rahier GmbH & Co (sera) has been one of the world’s leading manufacturers of dosing and delivery engineering for chemicals and liquids of all types. Subsidiary, Sera ProDos GmbH continues this tradition and continues to expand its scope of services as system and package provider, whether for preparation, treatment and disinfection of water or for the delivery and dosing of chemicals and liquids.

 SERA SOLENOID DIAPHRAGM PUMPS

Solenoid Diaphragm Pumps "R204" & “C204” Series

Electronically controlled dosing pumps which can be used for many applications. They are designed for industrial use and guarantee highest operational reliability. Sera has extended the range for all magnetic diaphragm pumps by one 0.4 l pump. The new pump types are also fitted with a high quality Full PTFE diaphragm.

Performance range:     0,4 l/h and 35 l/h
Pressures up to max.: 10 bar.
Capability characteristics:
  • Directly controllable
  • PROFIBUS-DP-Interface
  • High dosing accuracy
  • Long service life of diaphragms   *
  • High quality materials
  • Linear control characteristic
  • Low maintenance
  • Low operational costs
  • Leakage-free
  • Unlimitedly safe to run dry
  • Easy to operate
  • Low weight

 * in comparison with previous commercially available diaphragms

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SERA MOTOR DRIVEN DIAPHRAGM PUMPS

Diaphragm Pumps "R" Series

Performance Range: 0.4 l/h and 1450 l/h
Pressures up to max: 10
Single Diaphragm configuration
Stroke length adjustment
Available with single or 3 phase electric motor
Optional VF drive and stroke length control
Various materials of construction available
Capability characteristics:
  • Leakage free
  • Highest dosing accuracy
  • Dry run safety
  • High quality materials
  • Continuous operation with minimum maintenance
  • Long operating life
  • Easy to operate 
Electronically Controllable Diaphragm Pumps "C" Series

Flow ranges 0.8-1450 l/h
Up to 10 Bar back pressure
Single Diaphragm configuration
Speed and stroke adjustment
Pulse or 4-20mA Input control
Common Faults Outputs
Various materials of construction available
Capability characteristics:
  • Leakage-free
  • Directly controllable
  • PROFIBUS-DP-Interface
  • Highest dosing accuracy
  • Long service live of diaphragms
  • Linear control characteristic
  • Unlimitedly safe to run dry
  • Low maintenance
  • Low operating expenses

 

 

Multi-layer Diaphragm Pumps "ML" Series

Flow ranges 0-1200 l/h
4-20 Bar back pressure
Optional VF drive control
Longer Diaphragm life
Higher Pressure capabilities
Various materials of construction available
Capability characteristics:
  • Increased operational safety
  • Longer diaphragm lifetimes
  • Higher feed pressure
  • Leakage-free
  • Highest dosing accuracy
  • Dry run safety
  • High quality materials
  • Continuous operation with minimum maintenance
  • Long operating life
  • Easy to operate 
Multi –Head Diaphragm Pumps “ZR & DR”  Series

Flow ranges up to 500 l/h
Available in Duplex and Triplex design
Stroke Adjustment
Optional VF drive control
Compact design
Various materials of construction available
Capability characteristics:
  • Leakage free
  • Highest dosing accuracy
  • Dry run safety
  • High quality materials
  • Continuous operation with minimum maintenance
  • Long operating life
  • Easy to operate 

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SERA PISTON DIAPHRAGM PUMPS

Piston Diaphragm Pumps

Flow ranges 7.5 to 850 l/h
Up to 80 Bar back pressure
Speed and stroke adjustment
Various materials of construction available
Performance characteristics:
  • Leakage free
  • Highest dosing accuracy
  • Dry run safety
  • High quality materials
  • Continuous operation with minimum maintenance
  • Long operating life
  • Easy to operate
  • Integrated safety device against overpressure

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SERA POLYMER PREPARATION SYSTEMS

Sera preparation and dosing units for polymers are particularly suitable for applications where larger dosing quantities of polymer solution are necessary.

The use of polymers is essential for solid / liquid separation processes in many areas of water and wastewater treatment and sludge dewatering.
 
 
 
 
 
 
 
 
 
 
 
Features:
  • simple commissioning
  • easy to use
  • low space requirement
  • high operational reliability
  • prefabricated system
The following optional accessories are available:
  • conveyor for the transport of solid polymer
  • transfusing pump for liquid polymer
  • run-dry safe dosing technology can be installed at
    the preparation tank
  • static injection mixer