clack ws1.5 metered DUPLEX water softeners

Clack WS1.5 Duplex Water Softener

• Clack WS1.5 Metered duplex softener, displayed with optional pipework.

WS1.5” duplex water softeners supply treated, softened water at a flow rate up to 10m3/hr. These softeners are used to keep larger RO installations supplied with soft water, suppling manufacturing equipment that uses heat exchangers or where a constant stream of soft water is required for manufacturing. Soft water is supplied twenty-four hours a day, seven days a week. A WS1.5 duplex softener utilises a two vessel & two brass bodied valve system.

The interconnecting pipework seen in the picture is supplied separately. This unit can be purchased complete with the pipework or without.

A duplex water softener will save on salt consumption and be more efficient than a simplex softener. It will also have a larger footprint, so are useful for plant rooms where floor space is not an issue. 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 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
DS125-C15125 Litre, WS1.5 Metered Duplex Softener14” x 65”125 Litres5.0 m3/hr20.83 m315.0 kg
DS150-C15150 Litre, WS1.5 Metered Duplex Softener16” x 65”150 Litres6.0 m3/hr25.00 m318.0 kg
DS200-C15200 Litre, WS1.5 Metered Duplex Softener18” x 65”200 Litres8.0 m3/hr33.33 m324.0 kg
DS250-C15250 Litre, WS1.5 Metered Duplex Softener21” x 60”250 Litres10.0 m3/hr41.66 m330.0 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
DS125-C15White 15D145 Litres48 Litres82 Mins1.5”
DS150-C15Blue 15E200 Litres57.6 Litres85 Mins1.5”
DS200-C15Yellow 15F350 Litres76.8 Litres97 Mins1.5”
DS250-C15Green 15H500 Litres96 Litres95 Mins1.5”

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


RefDescriptionWidthDepthHeightBrine Tank Diameter øBrine Tank Height
DS125-C15125 Litre, WS1.5 Metered Duplex Softener1700 mm900 mm1900 mm500 mm1060 mm
DS150-C15150 Litre, WS1.5 Metered Duplex Softener1750 mm900 mm1900 mm550 mm1160 mm
DS200-C15200 Litre, WS1.5 Metered Duplex Softener1900 mm900 mm1900 mm740 mm1275 mm
DS250-C15250 Litre, WS1.5 Metered Duplex Softener2200 mm1100 mm2000 mm840 mm1335 mm


Maximum Flow Rate: 13.62 m3/hr
Includes A Built In Motorised Alternating Valve (MAV)
Drain Connections: 3/4”or 1” *
Brine Line Connection: 3/4”
Riser Tube: 50mm ø
Brass 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℃

* Depends on what size DLFC is required.

optional extras

SERC15WS1.25 & WS1.5 Service Kit inc. Spacer Stack, Downflow Piston & Brine Piston
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