Volume of the lower tank
The volume of the lower tank provided in the toilet.
The lower tank is intended for direct collection of waste. The larger it is, the less often you will have to clean the toilet from the accumulated contents. On the other hand, a large volume has a corresponding effect on the dimensions and weight of the entire structure. Therefore, manufacturers select the capacity of the lower tank in accordance with the type (see the relevant paragraph) and the intended features of the use of the dry closet. So, in mobile models, this figure rarely exceeds 20 liters, and in stationary models, tanks of 70, 120 and even 200 liters can be installed.
Flush mechanism
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.
Seat height
The height of the toilet seat relative to ground level. With a low seat height (
less than 40 cm), an additional stand may be required for comfortable use; on the other hand, such models are as compact as possible.
