Why Duplex?
Duplex water softeners supply soft water 24hrs a day, with no interruptions. With regenerations directly linked to the amount of water used, there is no 'outage' time for hard water, and salt use is kept to a minimum.

A traditional single tank softener has to be larger to accommodate peak water demand. When a single tank softener regenerates, it can only provide hard water during the regeneration, where as, the Duplex unit would simply switch to the standby unit to ensure a continuous supply of soft water.
     

Operation
Duplex softeners have two softening vessels sharing the same salt tank. These two vessels are connected by a single control valve with an integral water meter. One vessel supplies soft water whilst the other remains on standby. When the required amount of soft water has been reached this vessel begins an automatic regeneration with soft water then supplied from the previous standby vessel. This role is then reversed when the next regeneration is due. This ensures there is a continuous supply of soft water at all times.

With our Duplex softeners using a wet brine system, the regenerations can be more frequent ensuring an even greater output of soft water from a smaller softener.

Dimensions

 

24-hour soft water supply
Small size
Low running costs
Large salt storage
Simple operation
Low maintenance
National distribution network
Monarch - leading water softeners manufacturers since 1964
       
 
Dimensions          
Model
A
B
C
D
E
DS20
1080
610
323
850
550
DS30
1080
634
323
850
550
DS50
1570
815
346
775
680
DS75
1570
844
361
775
680
DS100
1845
870
374
975
685
   
       
 
Connections  
Inlet/Outlet   three quarter or one inch MBSP
Drain   half inch hose
Overflow   half inch hose
Electrical   240V 50Hz - 3-pin socket or fused spur
     
Operating Conditions    
Water pressure   30 - 70 psi
Water temperature   5 - 45 degrees
   
       
 
Model Selection
 
Capacity per regeneration (litres*)
Salt use per
model
@300 ppm
@400ppm
@500ppm
regen (kg)
DS20
3475
2600
2100
3.2
DS30
5200
3900
3150
4.8
DS50
8650
6500
5250
8
DS75
13000
9750
7875
12
DS100
17300
13000
10500
15
*Recommended regeneration frequency maximum every 6 hours

   
       
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