WatPass® Kalk 50000 Double Softener

The WatPass Lime 50000 double softener operates in shuttle mode and is suitable for drinking water. It is excellent for industrial applications and households with more than 20 people. Pendulum operation allows the system to provide continuous soft water, as one bottle is always in operation while the other is being regenerated. Easy-to-use Clack 1" control head for extra high flow rates (max. 6.8m³/h).

The WatPass® water softeners have been field-tested many times. They work according to the ion exchange process. This process is the most established, for water softening.

Our plants are available in 2 variants

1. Standard salting for normal households.

Best sensory result and sufficient softening for the whole household. The WatPass® lime is particularly energy-saving! Standard salting makes optimal use of the ion exchange resin. Other than with economy salting, the resin is completely regenerated. If you want to use the system for technical / gastronomic applications, please consider the following values when blending.  You will get a perfect rinsing result for glasses at values of < 150 µS/cm and for cutlery the system should be set to < 80 µS/cm.

Your advantages:

• no calcified heating rods & spray nozzles
• no technical malfunctions due to hard water
• better energy utilization of the equipment

2. Swiss version

For the operation in Switzerland the SVGW regulation has to be observed. Therefore the units for Switzerland are delivered with nylon protection stocking and silver resin part. Otherwise the equipment is designed like the standard version!

Nylon protective stocking/ fine salt:
Normally softening plants in Switzerland are run with fine salt instead of salt tablets. Softening plants that we deliver to Switzerland are therefore equipped with a nylon protective stocking, so that you can operate the softening plants with fine salt. Thereby a blocking of the salt in the plant is excluded.

Silver resin content ( min 2% ):
The ion exchange resin must contain a minimum of 2% silver resin.

Regeneration with ion exchange resin - how does it work?

When hard water is passed over the resin, the calcium and magnesium ions (Ca2+ / Mg2+) present in the water are exchanged for the sodium ions (Na+) present on the resin. The resin we use has a service life of over 20 years.

Your advantages

Softer water protects your installations, heating system, washing machines and small appliances such as kettles and coffee machines. Limescale deposits on your shower enclosure, washbasins, toilets, etc. are greatly reduced. You can save considerable amounts of detergent, soaps and shampoo and the water simply tastes better. Tea lovers, coffee drinkers and ambitious hobby cooks in particular will appreciate the results of softened water. Technical equipment and installations no longer show any calcification problems. This saves maintenance effort and thus money. Once you have used a water softener, you will never want to do without it again.

When does it make sense to use a water softener?

In Table 6, DIN 1988-200 recommends hardness stabilization or softening above a hardness level of 2.5 mol/m³ ( 14°dH), even for cold drinking water. In this case, the water is not fully softened for drinking water purposes, but is blended to a water hardness of approx. 6-7° dH, if technically possible, by means of the mounting block. If the water is even softer, it can become corrosive and thus poses a problem for the installations. In addition, it will not taste as good.

Structure of the WatPass® lime softening plants

The GRP pressure bottles (filled with ion exchange resin) with the extremely low maintenance Clack control valve are the basis of this softening system. A large salt tank can be placed freely next to the plant. The system is of course volume controlled. The innovative valve is extremely easy to maintain.

Regeneration - what is it?

When the preset volume of soft water flow is reached, the regeneration of the resin, controlled by quantity, is triggered.  You will continue to receive soft water as the system now switches to the second bottle for softening. During regeneration, the softener automatically passes saline solution (sodium chloride) over the ion exchange resin. During this process, sodium ions (Na+) are again added to the resin. The calcium and magnesium ions (Ca2+ / Mg2+) are discharged with the saline solution via a separate drain connection. Now the resin is ready to be used again to soften your drinking water. During regeneration, the WatPass® 50,000 continues to supply soft water so that the water supply is always available. When the system is inactive (e.g. vacation), a forced regeneration is triggered every 7-10 days to prevent the resin bed from becoming contaminated.

How long does one filling of salt last?

This depends on the water hardness and your water consumption. In regular operation, one filling lasts about 3-4 months, then new salt must be refilled. An integrated safety float valve protects you from overflowing water.

System size and technical information

For households of more than: 20 persons and commercial / industrial applications

Water softener Kalk 50000 with volume control

• Control valve: Clack WS 1 Twin Cl (flow controlled) Capacity at 10°dH.: 50.000 ltr.
• capacity at 15°dH.: 30.000 ltr.
• capacity at 20°dH.: 25.000 ltr.
• pressure tank type: 2x 16x65
• Resin capacity: 125 ltr.
• Salt consumption per regeneration approx.: 25,00 KG
• regeneration time: approx. 150 min
• Salt supply: 180 KG
• Diameter: 366 mm
• Weight: 200 Kg

Installation conditions for all plant sizes

• Drinking or raw water connection
• Socket 230 V / 50 Hz
• waste water connection
• pressure reducer at > 6 bar
• house water filter at the inlet
• connection thread: 1" inch
• frost-free installation site

The system will be delivered by forwarding agency. When ordering, please be sure to provide us with a telephone number where you can be reached upon delivery.