Water Supply Sets

Water supply sets are used to assemble a domestic waterworks system, which is an ideal solution if you want to get water from the source to your house, cottage, or holiday home. Besides supplying the household, a domestic waterworks system can also be used for garden irrigation, or for pumping water from wells or deeper boreholes.

The water supply set contains everything (usually except for the pump) you need to connect to the water distribution system. The foundation of each set is a pressure tank with a pressure switch. This switch activates the pump to maintain the pressure in the tank within a specified range – meaning it turns the pump on and off according to the pressure drop in the tank. In practice, pumping is usually controlled in thirds of the pressure tank's volume.

Bola.cz offers water supply tanks with a bladder inside, which fills and empties. Since the water does not come into contact with the steel tank itself, it does not need to be stainless steel. Therefore, they can also be used for drinking water.

Another advantage is that the bladders in the water supply sets can usually be easily replaced if damaged (most commonly by bursting). Customers do not have to immediately purchase an entire water supply set.

Pressure tanks with a membrane, which separates the water and gas sections, are maintenance-free (there is no need to check the air overpressure or inflate the tank) and have a longer lifespan because, although the membrane usually cannot be replaced, it tends to be stronger than the bladder. The German manufacturer Wilo offers newer types of waterworks with membrane pressure tanks, where the water is in contact with the tank, but all parts that come into contact with the medium are corrosion-resistant and comply with KTW recommendations.

Expansion pressure tanks are used for drinking water DHWS and also for heating (or cooling and solar) systems, where they maintain water in an equilibrium state and compensate for volume changes while maintaining constant pressure with temperature changes. Thanks to the separating membrane, gas does not penetrate into the water.  A gas "cushion" inside the tank helps maintain static pressure. The expansion pressure tank thus protects the entire system – as overly pressurized pipes could burst.

The Reflex DD 8/10 pressure expansion tank for drinking water offered by Bola.cz is suitable for connection with water heaters. However, it is necessary to order a Reflex Flowjet flow fitting, which can be found among other useful accessories for pumping technology.

Water supply sets can be used almost interchangeably with self-priming pumps as well as with submersible pumps for wells and boreholes. Individual water supply sets differ in the volume of the pressure tank.