Max. fuel consumption
The maximum fuel consumption during the operation of the device. Usually, it is achieved at maximum power. Knowing this parameter, it is possible to estimate how long the device can be guaranteed to operate on a certain amount of fuel (the actual operating time may be even longer).
Connection
Type of connection for connecting the gas cartridge provided in the device.
This parameter is relevant for burners made in the form of nozzles for small gas cartridges. The options might be:
— collet. It is either a stud or stock. Connection using a collet — a special clamp in which the tube (rod) of the gas cylinder is fixed. Such a connection is somewhat less reliable than a threaded one, but more convenient, because it allows you to quickly install and remove the cylinder.
— Threaded. Connection with classic thread. Provides higher strength and reliability than a collet; in addition, the threaded cylinders themselves are somewhat stronger than collet ones and endure accidental pressures and other “troubles” better. On the other hand, the installation and removal of such a cylinder requires more time, and the thread wears out with use and the contact density decreases. Thus, such a connection is somewhat less common than collet.
— Threaded / collet. Devices with the possibility of using cylinders for both types of fastening — both collet and threaded. For the types themselves, see above; and such versatility is usually provided by a replaceable adapter: for example, the device initially provides a threaded mount, and to use a cylinder with a stem, you need to install an adapter.
Cutting / soldering torch length
Total length of torch or torch (see the relevant paragraph).
Such devices can have different lengths, and each option has its own characteristics. So, short burners and cutters provide better accuracy when working, the movement of such a tool is easier to control; in addition, they are convenient in storage and transportation, because they take up little space. The long length, in turn, provides additional safety: the heating point is at a great distance from the user, thereby reducing the risk that sparks or splashes of molten metal will reach the person. The shortest modern models have a length of about 150 mm, in the longest this size can exceed 1.2 m.
Tank volume
The volume of its own fuel tank provided in the device (if such a tank is available in the design, many models operate from external cylinders).
A large tank allows you to work longer without refueling, all other things being equal; it is especially important for powerful high consumption instruments. On the other hand, with a small tank capacity, the weight of the tool also turns out to be relatively small, which has a positive effect on convenience and accuracy. Thus, manufacturers select the volume of the tank depending on how large and powerful the device is and what is more important for it — a large supply of fuel or low weight. So, in most blowtorches (see "Type") the volume of the tank is 700 mL or more (up to 6 liters), and in some of the smallest burners this volume can be less than 50 mL.
Weight
The total weight of the tool. For models equipped with their own fuel tank, the “dry” weight is indicated, excluding fuel; similarly, the weight of the fuel bottle is not taken into account in devices that look like a bottle cap.
