Float switches - Optimum water utilisation and pump protection
Float switches are essential components for domestic and industrial water systems. These devices automatically control the water level in tanks and cisterns and thus keep the water level within the desired range. They ensure that water is replenished as required or protect the pump from running dry. Find out more about the functions and installation of our devices here.
The function
A float switch ensures precise control of the water level in your water system. It protects your pump from running dry and prevents your cistern or water tank from running empty. This is particularly important in rainwater utilisation systems, where optimum use of the collected rainwater must be ensured. In general, these switches are ideal for use in waste water, service water and tap water systems. Float switches are equally suitable for submersible pumps or freely installed suction pumps. They are designed for continuous use under water.
Product information
Float switch for water make-up
Yellow float switch for controlling the drinking water make-up. For attachment to the inlet pipe or submersible pump. The switch lever defines the switch-on and switch-off point so precisely that the water level rises by just 9 cm (daily requirement of a detached house).
Important details
Product information
Float switch for dry-running protection
Float switch for switching off the pump if the water level in the storage tank is insufficient. For mounting on the inlet pipe or on the submersible pump. When it rains again and the storage tank has reached its minimum fill level, the pump is reactivated for operation by the float switch.
Important details
Two main functions
The float switches from WISY are specially designed for two main functions: water replenishment and dry-running protection.
Water make-up
An important area of application is the replenishment of water. A float switch recognises when the water level falls below a defined minimum level and then activates a solenoid valve. This guarantees a constant supply of water in the cistern and prevents failures due to a lack of water. The top-up system ensures that there is always enough water available, even if it has rained too little.
Guaranteed water supply
On-demand replenishment with tap water.
The yellow float switch from WISY for controlling a solenoid valve or the WISY drinking water make-up system is perfect for this application. For attachment to the inlet pipe or submersible pump. The switch lever defines the switch-on and switch-off point so that the water level rises by 9 cm - this corresponds to the daily requirement of a detached house. The float switch consists of a mirror-welded polypropylene float housing and a stainless steel switch lever as well as a choice of mounting clampsfor different pipe diameters. Equipped with a flexible connection cable (3 x 1 mm²) in 3m, 10m or 20m length. It is easiest to control the make-up solenoid valve using an adapter plug. The float switch then switches the socket of the intermediate plug on or off. The connecting cable of the solenoid valve for the make-up is plugged into this socket.
Protection of your pump
Pump switches off if the water level is too low.
Dry-running protection
Dry-running protection switches the pump off if the water level is too low. This prevents damage to the pump due to running dry and significantly extends its service life. When the storage tank reaches its minimum fill level during the next rain event in rainwater utilisation applications, the pump is enabled for operation again by the float switch. The float switches are suitable for both submersible pumps and suction pumps.
Our red float switches are designed to switch off the pump if the water level is insufficient. They are most easily attached to the inlet pipe or the submersible pump. The float switch consists of a mirror-welded polypropylene float housing and a stainless steel switch lever as well as a mounting clamp for various pipe diameters. Equipped with a flexible connection cable (3 x 1 mm²) in 3m, 10m or 20m length.
Overview of the functions
- Level control: Regulates the fill level in tanks and cisterns.
- Dry run protection: Protects the pump from damage due to dry running.
- Automatic top-up: Ensures a constant water level and water pressure.
- Wide range of applications: Suitable for service water, waste water and drinking water systems.
Simple installation
Installing the WISY float switches is simple and straightforward. The switches can be mounted directly on the inlet pipe or on the submersible pump. High-quality stainless steel clamps ensure a durable and reliable fastening. Float switches can be installed with or without a swivel joint to adapt the switching cycle to different water levels. For detailed instructions on how to connect the float switches, you can find more information in our download area.
Maintenance and care
WISY float switches are easy to care for and require only minimal maintenance. An occasional check and cleaning promotes reliable operation. In particular, the float must be able to move freely, cables and hoses should be firmly attached and run outside the float's radius of movement. Float switches for waste water systems must be checked somewhat more frequently to ensure that they continue to function correctly.
Expert conclusion
Float switches are ideal for the safe operation and efficient utilisation of water systems. They offer numerous advantages, from the prevention of dry running to automatic replenishment. WISY offers high-quality and durable products for professional use that can be installed in any water system. This investment pays for itself quickly by preventing pump damage and ensuring a continuous water supply. The switches can be used universally for submersible pumps and freely installed pumps, for dirty water or pre-filtered water.
