Ūdens būve

Water softening equipment – “RH DUPLEX”

RH Duplex

~ Softens water

~ Reduces iron

~ Reduces ammonium ions

~ “RH-DUPLEX” series equipment characteristics

This equipment purifies the water from various chemical impurities. Mostly, this equipment is used for water softening, but in addition the equipment also reduces the iron, manganese and ammonium ions in the water.

"RH-TWIN" treatment plants are intended for both the private sector (private houses, guest houses) and the industrial sector (industrial institutions, apartment buildings), etc., where the decisive factor is not only high water treatment quality and convenient further operation, but also independent continuous water treatment.

“RH-DUPLEX” differs from conventional or duplex water softeners in that these models provide a continuous supply of water to the consumer without changing the water treatment capacity and flow even during regeneration.

~ Brief principle of equipment operation:

 The pressure tank of the water treatment equipment is filled with a cation exchange layer. This layer attracts calcium, magnesium, iron, ammonia, and other ions from the water flowing through the tank. The amount of untreated water (m³) flowing through the layer in the tank gradually reduces the performance of this layer. And therefore this layer must be renewed periodically. Regeneration occurs automatically by rinsing the layer with saline. This is called filter regeneration. Elements accumulated during regeneration (Ca, Mg, Fe, etc.) are rinsed into the sewerage system. When the rinsing process is over, the equipment is ready for operation again. The device operates in automatic mode by means of a control mechanism.

The unit has two pressure tanks connected to the water system. With the control of the unit, the water flow is provided through one of the tanks. This is necessary so that the untreated water supply does not reach the consumer during the regeneration of the appliance. For example, when one of the tanks is regenerating, the control closes the water outlet from this tank, but the water supply is provided through the other tank until the next regeneration of the unit. Such a process provides the consumer with a continuous supply of purified water with non-reduced treatment capacity and flow. The controls are fully equipped with the necessary functions to be able to accurately adjust the settings individually required by each customer, based on the results of water analyzes, water pressures, etc. 

The control mechanism is fully equipped with the necessary functions to be able to accurately adjust the settings individually required for each customer, based on the results of water analyzes, water pressures, etc. The control mechanism is equipped with a water consumption meter, which provides the recovery interval of the equipment (the number of liters until the next recovery), thus ensuring the consumption of reagent "Salt" and wastewater.

~ Water purification capacity:

  • Desired maximum total hardness (H) concentration in water for treatment - max. 30 eq-mmol / l.
  • Desired maximum concentration of iron (Fe) in water for treatment - max. 3 mg / l.
  • Desired maximum concentration of ammonium (NH4 + -N) in water for treatment - max. 5 mg / l.

~ Water treatment level:

  • Concentration of total hardness (H) in purified water after treatment - <0.2 eq-mmol / l.
  • Total iron (Fe) concentration in purified water after treatment - <0.2 mg / l.
  • Total ammonium (NH4 + -N) concentration in purified water after treatment - <0.5 mg / l.

~ Equipment treatment capacity and flow rates:

Note! Treatment capacity is not equipment flow rate. The flow rate of the equipment is generally much higher than the treatment capacity (see table below).
Note! At times when the water consumption is higher than the treatment capacity shown in the table below, the water treatment function will still be performed, but the degree of treatment will gradually decrease depending on the amount of water consumed at the time.

Model Equipment treatment capacity Maximum flow
RH-305 DUPLEX 2,6 m³/h (43,33l/ min) 10,0 m³/h
RH-1000 DUPLEX 3,2 m³/h (53,33l/ min) 9,8 m³/h
RH-1500 DUPLEX 4,0 m³/h (66,66l/ min) 9,6 m³/h
RH-2000 DUPLEX 5,0 m³/h (83,33l/ min) 8,8 m³/h
RH-3000 DUPLEX 7,0 m³/h (116,66l/ min) 8,0 m³/h
RH-4000 DUPLEX 9,6 m³/h (160,0l/ min) 12,6 m³/h
RH-6000 DUPLEX 12,0 m³/h (200,0l/ min) 12,0 m³/h
RH-8000 DUPLEX 16,0 m³/h (266,66l/ min) 29,0 m³/h
RH-2165 DUPLEX 19,0 m³/h (316,66l/ min) 28,5 m³/h
RH-2472 DUPLEX 28,0 m³/h (466,66l/ min) 28,0 m³/h
RH-3072 DUPLEX 41,0 m³/h (683,33l/ min) 45,0 m³/h
RH-3672 DUPLEX 60,0 m³/h (1000l/ min) 80,0 m³/h

~ Equipment assemblage and manufacturers:

 SIA "Ūdens būve" performs full equipment assembly. The equipment is assembled in the workshop of SIA “Ūdens būve”, 87 Kalnciema Street, or, if necessary, in the facility.

The components are of high quality, they have been inspected and tested. Manufacturers and suppliers of equipment components are the leading leaders in this field, which we believe is trust, responsibility and quality.

The most important components of the equipment are the control mechanism and the ion exchange material. With 10 years of experience in water treatment, we are convinced that the highest quality mechanisms are manufactured in the USA by Clack Corporation, while softener fillers are manufactured in Germany by Lanxess.

„RH duplex” assemblage:
Control mechanism model: „CLACK WS-EI or CI”
Cation exchange resin filling: „LEWATIT S1567”

In order to obtain additional information about the equipment, its specifications, dimensions and technical parameters, it is necessary to contact the seller by sending a request to the e-mail address This email address is being protected from spambots. You need JavaScript enabled to view it., or by calling the office telephone +371 29349862.

Equipment warranty: 3 years.

Contact information
    • Business hours 

      Business hours - We provide consultations in the office only by prior arrangement!   
      Monday:   9:00 - 18:00
      Tuesday:     9:00 - 18:00
      Wednesday:   9:00 - 18:00
      Thursday: 9:00 - 18:00
      Friday:   9:00 - 17:00
      Saturday and Sunday: Off

       

    • Communication

      Office telephone: +371 29349862
      E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
      Project manager: +371 22301342 
      Service: +371 29182508
      Marketing: +371 29555817
      E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

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