Flushing systems are equipped with chemical and electrical models (see "Operating principle"). The mechanisms responsible for this function differ in structure and principle of operation:
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Piston. Water supply by pressing the piston. The simplest and most inexpensive type of mechanism, which, nevertheless, allows you to dose the supplied water. In addition, the advantages of this option include the possibility of self-replacement and repair. The disadvantage of piston mechanisms is the need to apply quite significant effort when pressed.
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Pump. Water supply with a mechanical pump. The outer part of such a mechanism looks like a characteristic corrugated “column”, when pressed, water is supplied. Pump mechanisms provide a metered supply of water; they are more complicated and more expensive than piston ones (see the relevant paragraph), but they do not require much effort from the user.
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Electric. Water supply with an electric pump. The most expensive, but also the most user-friendly option: no need to pump water manually, just press the power button. Among the disadvantages of such mechanisms, in addition to the cost, one can mention the need to either connect to the network or periodically replace the batteries, depending on the type of power supply.
