Productivity (liquid)
Maximum performance of the sprayer when working with liquid; Please note that in pump (see "Type of pumping") and battery (see "Type") models, the actual performance may decrease as the air supply or battery charge is exhausted.
High performance allows you to quickly process large areas; moreover, it is often combined with a good spraying distance (see below). On the other hand, such models require fairly large tanks — or they often have to be refilled; neither one nor the other contributes to the convenience of work. In addition, over-capacity is even more undesirable than under-capacity: a low-capacity sprayer will just take longer to process, and a too-capacity sprayer can ruin the job by “overdosing” the chemical. Therefore, it makes sense to use high-performance devices only for specific tasks.
Detailed data on optimal performance values for different situations can be found in special sources.
Productivity (powder)
Maximum performance of the sprayer when working with powder (if the appropriate mode is available, see below). On pump (see "Type of pumping") and cordless (see "Type") models, actual performance may decrease as the air supply or battery charge is exhausted.
High performance allows you to quickly process large areas; moreover, it is often combined with a good spraying distance (see below). On the other hand, such models require fairly large tanks — or they often have to be refilled; neither one nor the other contributes to the convenience of work. In addition, over-capacity is even more undesirable than under-capacity: a "weak" sprayer will just take longer to process, and a too powerful one can ruin the job by "overdosing" the chemical. Therefore, it makes sense to use high-performance devices only for specific tasks.
Detailed data on optimal performance values for different situations can be found in special sources.
Max. fluid temperature
The maximum fluid temperature that the sprayer can safely handle.
The preparation process of some formulations requires heating; therefore, data on the temperature to which the liquid must cool can be very important for safe operation. However, even in the most heat-resistant sprayers, this figure does not exceed 40 °C; such a liquid feels warm to the touch.
It is worth remembering the temperature limits when the unit is in the sun: if the tank has had time to get very hot in the sun, you should let it cool down before starting work.
Hose length
The length of the hose supplied with the sprayer.
The longer the hose, the farther the spray tube can be reached without moving the sprayer itself. However, this is true mainly for wheeled and universal sprayers (see "Carrying type"). In shoulder-mounted units, the hose is usually selected in such a way that it is enough to comfortably hold the tube in your hand, and this parameter in such models most often does not exceed 150 cm.
It is also worth considering that long hoses can be quite bulky; however, this disadvantage is often eliminated by the use of spiral hoses, which are stretched to their full length only when necessary.
Cylinder volume
The volume of one cylinder in an internal combustion engine installed in a sprayer. In fact, we are talking about the working volume of the entire engine, because. in this technique, only single-cylinder internal combustion engines are used.
In general, a large cylinder volume allows you to achieve high power, but power also depends on some engine characteristics (primarily the type of internal combustion engine, see above). And the performance characteristics of the sprayers themselves with the same engine power can also be different. But what directly depends on the volume of the engine is fuel consumption: a larger volume, usually, requires more fuel.
Power
Engine power of the gasoline sprayer (see "Type") in horsepower.
Power directly affects the spraying range and the performance of the unit, according to this indicator, it is quite possible to assess the overall level of the device. However note that manufacturers can indicate this characteristic in different ways: some give the rated power (when the engine is running in normal mode), others give the maximum power (at peak load). Therefore, when choosing and comparing, it is worth considering not only this indicator, but also other basic characteristics.
As for horsepower, this unit is traditionally used to assess the power of an internal combustion engine. 1 HP approximately equal to 735 watts.
Power
Sprayer engine power in kilowatts. Watt (kilowatt) is a universal unit used for all types of engines, but in fact this parameter is indicated mainly for gasoline units (see "Type"). This is due to the fact that electric sprayers — even the most powerful and heavy ones — consume less than 1 kW, which does not create any problems with connecting to a conventional outlet; so for such units there is no need to specify engine power.
Power directly affects the spraying range and the performance of the unit, according to this indicator, it is quite possible to assess the overall level of the device. However note that manufacturers can indicate this characteristic in different ways: some give the rated power (when the engine is running in normal mode), others — the maximum (at peak load). Therefore, when choosing and comparing, it is worth considering not only this indicator, but also other basic characteristics.
As for specific figures, in the most modest models this figure
does not exceed 1 kW ;
1.1 – 2 kW can be called the average value; and many gasoline sprayers are equipped with motors and
more than 2 kW.
Fuel tank capacity
The volume of the fuel tank in the petrol sprayer (see "Type").
Knowing the fuel consumption (see below), the volume of the tank can be used to estimate the time of continuous operation without refueling. In general, a larger tank, on the one hand, allows you to work longer between refueling, on the other hand, it affects the dimensions and weight of the entire unit. In addition, the power of the internal combustion engine in the sprayers is relatively low and they require little fuel, and you still have to fill the main tank every few minutes. In light of all this, manufacturers usually install tanks in sprayers with a volume of 0.5 to 2 liters — this is quite enough for at least half an hour of work (often more).
Weight
The total weight of the sprayer. Specified without taking into account the liquid or powder in the working tank; at the same time, for battery models (see “Type”), usually, the weight is given with a complete battery, and for gasoline models, on the contrary, “dry” weight, without fuel in the tank.
