Hose gas mask is an excellent protective device, the meaning of which is to comprehensively ensure the safety of the respiratory system and skin on the face under the harmful effects of toxic and toxic substances. This device is able to protect the user well from bad air, while saturating the lungs with oxygen coming through a special hose.
Hose gas mask: purpose and types
There are two types of gas masks, differing in the method of supplying clean air:
- Air pressure. The essence of this device is to supply clean air using a fan or compressor.
- Self-priming. This unit allows the user to inhale clean air on their own.
Hose gas mask is a device that provides reliable protection of the respiratory system in places with insufficient oxygen or with a high concentration of toxic substances and dust in the air.
Such gas masks are intended for use in places with a small area of pollution, because the principle of their work is to suck in clean air at a distance not exceeding forty meters from the user.
Most often PN is used in small rooms, mines or tanks. In other cases, pollution occurs on too large areas, which excludes the possibility of using clean air.
Device design
The hose gas mask consists of a helmet mask tightly and hermetically adjacent to the face, a pair of tubes and a special valve designed for air outlet.
Depending on the type of device, the hose may have a length of ten to forty meters. Be sure to note that before starting work, the duct must be installed in a clean area and only then carry out the necessary operations.
Requirements and Technical Standards
Each PN gas mask must be tested before use. In order to prevent accidents during the use of the product, you need to check the equipment and marking.
After this, the unit must be visually inspected. Hoses, tubing, valve and mask must be in perfect condition. Before use, thoroughly clean the gas mask from dust. This can be done by blowing. Be sure to check the tightness and tightness of the mask to the face.
Inspection should be carried out just before the start of work and planned twice a year.
Pay attention to the presence of rubber gaskets in the areas where the components are connected.
Gas mask brands
Hose gas masks are able to completely protect the respiratory system when working in limited contaminated areas.
Gas masks PSh-1 and PSh-2 are used to protect not only from harmful gases and fog, but also from dust. In this case, air will come to the external respiratory organs through a hose from the place where the air is clean.
Gas mask PSh-1 consists of:
- three face masks;
- two corrugated half-meter tubes;
- ten meter hose;
- a safety belt on which all working devices are attached;
- a filter;
- a cover that allows you to store and transport the unit.
The PSh-2 gas mask has the following structure:
- two helmet masks;
- two tubes five meters long each;
- two twenty meter hoses;
- two safety belts;
- blower box;
- a suitcase for storing the device and its transportation.
How to make the right choice
The most important difference between hose masks is the length of the ducts. You can find hoses having a length of 10, 20 and 40 meters.
Choose a device depending on the room in which you are going to work. If it is not very large, products with ten-meter hoses are perfect for you. For shallow mines and plants it is best to use devices with long hoses. After all, the longer the length, the less likely it is that toxic substances and dust will enter the lungs.
How to store
For maximum safety, store your device in the correct conditions. The gas mask must be in a closed box in the room. In this case, the kit can be stored at temperatures from -50 to +50 degrees Celsius. However, before use, it is necessary to withstand the unit at room temperature for a day.
Never expose the gas mask to direct sunlight, or to mechanical or thermal shock.
Hose gas masks have many advantages over their counterparts. Although they are not so compact, but, unlike others, they supply clean air to the human lungs, while other varieties only filter it. Therefore, the risk of infection is minimized.
Most often, this device is used by repairmen, since it is very convenient to move around a small area with it.