clack ws1 TT metered DUPLEX water softeners

Clack WS1 TT Duplex Water Softener

Clack duplex WS1 TT water softeners are ideal for residential situations where soft water is required twenty-four hours a day, seven days a week. The TT Duplex system will supply soft water to a max flow rate of 6.1m3/hr.  The softener utilises a two-vessel system where hard water will never pass to service during a regeneration. Duplex TT water softener units are most suitable for small to medium residential applications but can also be used for commercial and industrial applications.

The TT systems come with meter controls as standard. This helps as the system uses fewer regenerations. The meter calculates the amount of soft water that has been processed and initiates a regeneration process when the vessel which is online has exhausted its capacity. This ensures that the full resin capacity is used resulting in a saving on salt consumption, water usage and energy consumption.

The single valve TT unit is more cost effective than its competitors. Saving on space and servicing costs as there is only one head to service.

Our systems are built by our team of senior engineers ensuring the reliability you require and come with a typical resin life expectancy of around 10 to 15 years. Wateq’s metered Clack duplex softeners consist of all the required components to allow you to start softening your water straight away.


RefDescriptionTank Size (x2)Resin Quantity (x2)Flow Rate* Capacity @ 300 ppm** Salt Usage Per Regen
DS20-CTT20 Litre,WS1TT Metered Softener8” x 35”20 Litres0.8 m3/hr3.33 m32.4 kg
DS30-CTT30 Litre,WS1TT Metered Softener10” x 35”30 Litres1.2 m3/hr5.00 m33.6 kg
DS40-CTT40 Litre,WS1TT Metered Softener10” x 44”40 Litres1.6 m3/hr6.66 m34.8 kg
DS50-CTT50 Litre,WS1TT Metered Softener10” x 54”50 Litres2.0 m3/hr8.33 m36.0 kg
DS60-CTT60 Litre,WS1TT Metered Softener12” x 52”60 Litres2.4 m3/hr10.00 m37.2 kg
DS75-CTT75 Litre,WS1TT Metered Softener13” x 54”75 Litres3.0 m3/hr12.50 m39.0 kg
DS100-CTT100 Litre,WS1TT Metered Softener14” x 65”100 Litres4.0 m3/hr16.66 m312.0 kg
DS150-CTT150 Litre,WS1TT Metered Softener16” x 65”150 Litres6.0 m3/hr25.00 m318.0 kg

* Capacity based on 50g CaCO3 hardness removed per litre of resin.
** Salt usage based on 120g per litre of resin. This will increase if salt dosage is increased.


RefInjector ColourBrine Tank Volume* Brine VolumeRegen TimeInlet / Outlet Options
DS20-CTTViolet100 Litres7.68 Litres71 Mins3/4”, 1”, 1.25”
DS30-CTTWhite100 Litres11.52 Litres71 Mins3/4”, 1”, 1.25”
DS40-CTTWhite100 Litres15.36 Litres71 Mins3/4”, 1”, 1.25”
DS50-CTTWhite100 Litres19.2 Litres81 Mins3/4”, 1”, 1.25”
DS60-CTTBlue100 Litres23.04 Litres73 Mins3/4”, 1”, 1.25”
DS75-CTTYellow145 Litres28.8 Litres95 Mins3/4”, 1”, 1.25”
DS100-CTTGreen145 Litres38.4 Litres97 Mins3/4”, 1”, 1.25”
DS150-CTTOrange200 Litres57.6 Litres85 Mins3/4”, 1”, 1.25”

* Brine volume based on a suggested 3.2 litres per kg of salt.


RefDescriptionWidthDepthHeightBrine Tank Diameter øBrine Tank Height
DS20-CTT20 Litre,WS1TT Metered Softener900 mm450 mm1100 mm450 mm940 mm
DS30-CTT30 Litre,WS1TT Metered Softener1000 mm450 mm1100 mm450 mm940 mm
DS40-CTT40 Litre,WS1TT Metered Softener1000 mm450 mm1330 mm450 mm940 mm
DS50-CTT50 Litre,WS1TT Metered Softener1000 mm450 mm1590 mm450 mm940 mm
DS60-CTT60 Litre,WS1TT Metered Softener1400 mm800 mm1600 mm450 mm940 mm
DS75-CTT75 Litre,WS1TT Metered Softener1500 mm800 mm1600 mm500 mm1060 mm
DS100-CTT100 Litre,WS1TT Metered Softener1700 mm900 mm1900 mm500 mm1060 mm
DS150-CTT150 Litre,WS1TT Metered Softener1750 mm900 mm1900 mm550 mm1160 mm

*Dimensions are approximates only.


Maximum Flow Rate: 6.1 m3/hr
Includes A Built In Motorised Alternating Valve (MAV)
Drain Connections: 3/4” Male BSP
Brine Line Connection 3/8” Push Fit
Riser Tube: 1.05” ø
Noryl Body
Electrical Rating: 230-12V / 50Hz
Power Rating: 0.5 Amps
Min Inlet Pressure: 20psi -1.4 bar
Max Inlet Pressure: 125psi - 8.6 bar
Average Pressure Loss Over System: 1 bar
Min/Max Temperature: 4℃ - 43℃

optional extras

SERC1WS1 Service Kit inc. Spacer Stack, Downflow Piston & Brine Piston
V3006Bypass Valve
V3193Clack Spanner
V3009Auxilary microswitch
SALT25kg Tablet Salt
Clack Softcontrol

Reduce operating costs by up to 60% by adding the Softcontrol Clack water hardness monitor. Designed specifically for Clack Duplex water softeners.

Click Here for further details.

Save Money

Recommended 20µ pre-filter directly before the softener

Please ensure air gap on drain to prevent potential future issues

Food grade, WRAS certified strong cation exchange resin provided