Gas masks GP-7: description, characteristics and device

Gas masks GP-7 are the latest and tested models that reliably protect the user from the effects of various toxic agents. With this equipment, you can protect the respiratory system, face, eyes from various substances - from poisonous to radioactive dust and biological aerosols.

A bit of history

The first gas mask GP-7 was developed in the 80 years of the last century. Due to the revision of the previous version of the gas mask GP-5, the mask of the new model has become safer and safer, the ears do not close, as the belt fastening system was modified. With the help of filtering gas masks, protection against poisonous substances of combat type is provided. True, the characteristics of the gas mask GP-7 as a defender in the critical concentration of poisons indoors did not deserve good reviews. To date, gas masks of this brand are produced in three factories in Russia.

Appointment of civil gas masks

The main purpose of these gas masks is to protect the population that lives in a hotbed of air pollution with various harmful elements. Such equipment attracts attention with ease of use, ease of dressing and light weight, the ability to breathe clean air without harmful impurities for several hours. The gas mask GP-7 is good because it can be used simultaneously in combination with special means that protect the head. In addition, modifications to this gas mask have a special drinking device, so you can stay in it for a long time. Due to the convenient panoramic glass, good visibility is provided. The civil gas mask consists of several elements:

• A filtering-absorbing box made of metal;
• The front of the IHP;
• Non-fogging film - one box;
• Two insulating cuffs MNU-3;
• Bags for a gas mask;
• A pinch of rubber;
• Operating instructions and product form.

The gas mask can be supplemented with a cartridge DPG-3, which complements civil and children's gas masks and thereby expands the scope of their use. The cartridge is able to protect the user from the effects of elements such as ammonia, chlorine, sulfur hydride , sulfur dioxide, hydrogen cyanide, phosgene, amines.

Features of the box

The main purpose of the filtering-absorbing box is to clean the air that a person inhales. The gas masks GP-7 are designed to protect the user from poisonous, radioactive and bacterial agents. To create a box, tin or aluminum alloys are used, which are given a cylindrical shape. In order for the body to be strong, rugs are created on it. Modern gas masks have plastic or metal boxes, each of which is good in its own way. The lightest gas masks are created on the basis of durable plastic - these devices are characterized by low weight and great convenience and comfortable wearing.

The top cover of the box has necklets with a screw-like thread, which connects it to the front part. Sealing is provided by a metal cap and a rubber gasket. In the bottom of the filtering-absorbing box, a hole is thought through, through which inhaled air enters. As an additional equipment, the box has an anti-aerosol filter and a coal-catalyst (charge). The overall dimensions of the gas mask GP-7 when placed in a bag are 285х210х115 mm.

The anti-aerosol filter includes a plate in the form of a special filter cardboard, which is assembled into folds to increase the filtering surface. The shihta is located between two grids, and on top of one of them there is a tampon cardboard - it keeps coal dust.

FPK reliably protects respiratory organs and face from hydrocyanic acid, chlorcyan, hydrogen sulphide, chlorine, hydrochloric acid, tetraethyl lead, ethylmercaptan, nitrobenzene, phenol and furfural.

The front part

Gas masks GP-7 have a front part in the form of a mask, which is complemented by sight glasses for eyes of circular shape. The viewing glasses are made of high-quality material and covered with non-fogging films. If the gas mask is to be operated at negative temperatures, it is supplemented with a heating cuff that helps maintain the transparency of the glass during prolonged operation.

The front part of the IHL is created for three growth. It includes several elements:

1. A volumetric mask that has an independent obturator is a strip of fine rubber that ensures a reliable sealing of the face of the mask on the head.
2. Point package.
3. Interphone system (membrane).
4. Knots the valve of inspiration and exhalation.
5. Cowl.
6. Headguard. It is needed to fasten the front part, consists of the occipital plate and five straps - they are securely fixed when the mask is fitted to the face.
7. Press rings, which fix films on the glass.

Main advantages

The gas masks GP-7 are similar in construction and functions to the previous models, but they also have a number of distinctive features:

• By reducing the resistance of the filtering-absorbing box, breathing is facilitated;
• The system of inhalation / exhalation valves is made in the form of petals, so the valves of the valve box are locked quickly and reliably;
• The presence of an independent obturator promotes that the user can be in a gas mask for a long time without experiencing unpleasant sensations (thanks to him there is less pressure on the face, a high degree of face protection is provided);
• Civil gas mask GP-7 is equipped with a modern interfacing device (membrane), due to which the speech is clear.

Marking and packaging

Each gas mask has a marking: it is applied with a special waterproof mastic on the filter-absorbing box. The data on the product reflects the information on the lot number, series and number of the FPC, the manufacturer's company, the date of manufacture. On the front side there is also a marking, telling about the size, form number and manufacturer.

Storage of gas masks GP-7 is carried out in the factory packing in a box, in each box - 20 sets of products. Their facial parts are laid in accordance with the rostovka.

Modifications GP-7

One of the popular modifications of civil gas mask GP-7 - GP-7V. It has the front part of the IHP-B, which is additionally equipped with a device for receiving water from a regular army jar. Such equipment allows drinking water without removing the gas mask. The gas mask filtering GP-7 V is necessary as a protection against poisonous and chemically hazardous substances, radioactive dust, bacterial agents. The composition of the gas mask is the following: a filtering-absorbing box, the front part, a drinking tube from a jar, insulating cuffs, a non-fogging film, a bag and a grille.

Another popular type of gas mask GP-7 - gas mask GP-7VM. The peculiarity of this model is in the front form, equipped with trapezoidal viewing glasses, which improve the view during operation. A special intercom and a device for receiving water are the main differences of this variety.

Features of filter masks

The device of gas mask GP-7, which is a filter, is the following: a gas bag, a box with anti-fog films for glasses, a lid with a rubber seal that promotes tightness of the front part, and a rubber stopper. The GP-7 products are in great demand thanks to the more sophisticated design and form of the helmet-mask. They ensure the safe intake of water, liquid medications and other fluids in the area that has been contaminated. It is important that the composition of the FPK can work in an extended period, and the raspberry is thought out in three sizes.

Prices for gas masks

Model GP-7B (GP-7VMB) - the cheapest gas mask GP-7. The price of this variety is only 1962 rubles. Its distinctive features are improved protective and ergonomic properties. In the process of developing this model, the latest technologies and original technical solutions were used. With a gas mask, you can protect the respiratory system, eyes and skin of a person from the harmful effects of various factors. The advantage of this model is the plastic box FPK, which differs:

• Resistance to corrosion;
• Lightweight gas mask as a whole;
• Reversible deformation of the material minimizes possible conditions for air penetration along the walls of the shell;
• The box is filled with modern coal-catalyst, which improves the protective properties of equipment and extends the boundaries of its use;
• A plastic box can be used in gas masks that are protected from organic and inorganic gases, vapors.

This gas mask is used to protect the public from the effects of vapors, gases, aerosols, chemically hazardous substances.

Model GP-7VMB with a plastic box - another available gas mask GP-7. The price for it starts at 2000 rubles. The advantage of this model is in a filter-absorbing box made of strong plastic.

We choose correctly

1. First, you need to pay attention to the compliance of the front part (helmet-mask) and its serviceability. To fit exactly, you need to measure the measuring tape along the closed line of the head through the crown, cheeks and chin.
2. The results obtained should be compared with the data given in the table to the helmet. Pay attention, that on a mask there were no cracks, punctures, glasses glasses should be the whole and pure.
3. The gas mask must be worn and tested, so that the mask is fitted to the face as tightly and comfortably as possible.

conclusions

Civil gas filtering gas mask GP-7 is equipment that allows timely protection of the user from negative factors. Modern models of this brand are widely used in Russia to protect against vapors and gases that are contained in the air. Effective protection is provided from such harmful factors as:

• Nerve-paralytic action;
• All-toxic action;
• Radioactive effects;
• Blistering.

In this case, the gas mask will not become a human protection in the event of exposure to carbon monoxide and low-boiling organic substances in the form of methane, ethane, butane, acetylene. Work in the mask is possible up to 12 hours, with only the replacement of the filter cartridges in their workings.