Water jet angle
The angle of the water jet produced by the tap, relative to the vertical. Generally stated for full head; with partially blocked water, this angle is smaller. Anyway, the water jet is usually directed towards the user, and the greater the angle of inclination, the farther from the spout the point of incidence of the jet will be placed. However, in most cases this point is not critical; problems can arise only in very cramped conditions, with small basin sizes.
Cartridge diameter
The diameter of the cartridge used in the tap.
The cartridge is called the "heart" of the tap — the part directly responsible for adjusting the pressure and/or temperature of the water (in some models — also for switching between spout and shower). The main dimension of this part is precisely the diameter. However, in fact, this size becomes relevant only if it is necessary to replace the cartridge. But when choosing a tap, it does not really matter — from the point of view of characteristics, only the overall dimensions of the device depend on the diameter of the cartridge, and then quite approximately and without a fundamental difference between individual models.
Mounting hole diameter
The diameter of the holes required to install the tap. This dimension allows you to assess whether the tap will be compatible with a sink, wall, etc., what dimensions the additional parts should have to install it, and whether the holes will need to be widened or narrowed.
Depth
The distance from the extreme front to the extreme back of the tap determines the installation possibilities of the device. In comparison with the depth of the jet, it gives much more visual data precisely on the dimensions of the entire tap, especially for models where there is either no spout (built-in models) or the spout is not the longest part of the set (vertical taps).
Manufacturer's warranty
The warranty period claimed by the manufacturer for a certain tap model is the period during which the manufacturer guarantees the normal operation of the device. The specific terms of the warranty may vary, however, usually, it covers factory defects and malfunctions caused by the fault of the manufacturer or seller and discovered during normal use, without violating the rules; if such defects or malfunctions appear during the warranty period, the manufacturer undertakes the obligation to correct the situation at its own expense — up to replacing the tap with a working one.
Nowadays, you can find taps with a guarantee of
4 years,
5 years,
7 years,
10 years and even
25 years. In general, the longer the warranty period, the more reliable the product is, the higher its overall quality, ceteris paribus, but the more expensive it will cost compared to analogues.
