GP-7 gas masks

Modern gas masks, including the GP-7 series, provide the most efficient protection against the effects of hazardous substances and have a comfortable design. To date, these devices are widely used in various fields. Thanks to the operational properties of civil copies, the risk of many negative and dangerous influences is reduced to a minimum. With timely replacement of filter elements GP-7, you can use up to 12 hours.

What is it for and for what?

Initially, it is worth paying attention to the history of the appearance of funds to protect against different poisoning substances. More than a century ago, in 1915, German troops began to actively use chlorine and other OS during the conduct of hostilities. Based on this, the immediate development of a device that protects against chlorine, ammonia and other poisons was required. It was then that Academician Zelinsky created a filtering element based on coal for protection.

Naturally, over the next decades, the design of gas masks has changed significantly. At the same time, their purpose remains the same.

Now one of the most common modifications is GP-7. We are talking about civil equipment, the main purpose of which is timely and most effective protection against negative impact:

  • radiation;
  • dangerous chemical exercise;
  • Bioaerosoleum.

Civil gas mask of this species, like all similar devices, refers to the category of filtering. It is important to take into account that the basic equipment does not provide for protection against ammonia for which the DPG-3 cartridge is required. The latter should be connected to the FPK, which is part of the standard set. It should be noted that the PC-PC cartridges can be used autonomously.

After examining the instructions of the manufacturers, as well as the detailed descriptions of the analyzed devices and devices available on the unstashes of the worldwide web, it can be concluded that the basic equipment consists of:

  • masks;
  • FPK;
  • 6 films for points that are unsuccessful;
  • 2 clamping elements in the form of rings or rubber cords;
  • 2 sealing elements;
  • bags;
  • instructions.

It is worth noting that the described model has become an intermediate link in the line between the devices of GP-5 and GP-9. Against his predecessor, he has the following advantages:

  • Minimal filtering box resistance, providing breathing relief;
  • Maximum valve reliability;
  • The most increased tightness and significantly reduced impact of the mask during the operation of the device;
  • High level quality of speech transmission.

Device and principle of operation

First of all, it is worth paying attention to the constructive features, structure, composition of the filtering-absorbing unit and, naturally, its purpose. This component of the GP is responsible for effective (practically complete) purification of air inhaled by a person from most potentially hazardous impurities. This box is executed from the usual tin or aluminum. Increased strength and resistance to damage to the cylindrical body give special ribs.

The top cover of the cylinder is equipped with a threaded neck, which serves to pairing with the mask.

If the device is on storage, then this structural element is tightly closed by a special cap having a gasket to ensure maximum tightness. On the opposite side, that is, in the bottom of the FPK, there is a hole, through which air flows into the filter. Its on the storage time should also close the special plug.

One of the important elements of the design is a spectacular node having overview glass. For the last during operation, special unapproving films are installed. Also provides for the installation of insulating cuff at low temperatures. This allows you to maintain full glass transparency in almost any operating conditions. In addition, the design of the described node includes such components as:

  • Obturator in the form of a fine strip made of soft rubber and providing maximum tightness;
  • device with a membrane responsible for speech transmission;
  • locking mechanisms of respiratory blocks;
  • The strap system that allows you to fit the mask and fix it with maximum tightness.

The last structural element includes a plate (occipital) and 5 straps – one frontal, as well as two temporal and peeled. In a situation with the latter, we are talking about metal fixing devices, and the remaining straps are fixed with plastic buckles. In this case, all belts have a stepped type.

The principle of functioning of the described apparatus in everything is identical to the algorithm of action of most of its “fellow”. At the same time, such obvious advantages are characteristic of the civil rock of the civilian 7th series as:

  • minimized resistance of the FPK;
  • Maximum reliable valve response and minimization of risks of their damage, provided by a unique form of petals;
  • The possibility of long and most comfortable as possible (the minimum pressure of Maxi is created on the person) of the device’s operation even in the most difficult conditions;
  • Maximum tightness, preserved including damage to straps.

In addition to the above, it is necessary to focus on the characteristics of the negotiation device.

High-quality membrane guarantees clear sound transmission, which allows the use of communication tools.

Specifications

In determining the scope of the application of civilian individual protection, including the modification, Special attention should be paid to their main operational indicators, the list of which includes:

  • the weight of the basic configuration without taking into account the bag (kg) – 0.9;
  • FPK weight (kg) – 0.25;
  • mask weight (kg) – 0.6;
  • visibility – from 60%;
  • The dimensions of the folded and placed in the bag of the gas mask (M) – 0.285 / 0.21 / 0.115;
  • temperature fluctuations under which it is possible to use the device – from -40 to +40 degrees;
  • Air resistance at the stage of inhalation (mm water column) – within 18;
  • The presence of carbon dioxide – should not exceed 1%;
  • Mask resistance to inhale / exhale (mm water column) – no more than 2/8, respectively;
  • The indicator of SMT in the filtering module and directly under the mask itself – not more than 0.001%.

In addition, it has a determining value of the duration of the active phase of protection provided by a good filtering element. At the expense of a person inhaled in the process of operation of air gas to air within 30 dm3 / min for different potentially hazardous substances is at least (min):

  • chlorine (5ml / dm. cube) – 40;
  • Hlorcian (5ml / dm. cube) – 18;
  • nitrobenzene (5ml / dm. cube) – 40;
  • Salt and Sinyl Acid (5ml / dm. cubic) – 20 and 18;
  • phenol (0,2mg / dm. cubic) – 200;
  • Tetraethylswin (2mg / dm. cube) – 50;
  • Etaltyiol (5mg / dm. cube) – 40;
  • hydrogen sulfide (10mg / dm. cube) – 25.

Modifications

Today, GP-7 is already considered an outdated model of civilian gas masks. New versions are more reliable, efficient, user-friendly and functional.

So, GP-7BT is manufactured taking into account all the current requirements of the Ministry of Emergency Situations.

This protection means has the following advantages:

  • the presence of coal-based catalyst;
  • The maximum stability of the FPK to corrosion and the effects of the aggressive environment;
  • tightness provided by plasticity materials;
  • Compact sizes and minimum weight;
  • Wide scope of application;
  • Ability to use when infected with ammonia.

Modification of the GP-7BTV distinguishes the maximum quality of the transmitted sounds. Among other things, it is worth paying attention to the operational properties such as increased strength and duration of service life.

Dimensions

The choice and fit of the mask is one of the key components of the operation of the described devices. Initially, you need to determine both key sizes. To find a horizontal size, a conditional line should be conducted on the eyebrow and the most protruding part of the nape of 2-3 centimeters above the ears. To determine the vertical size spend a line through the chin and the top.

Taking into account the measurement results, the appropriate size is determined. In this case, we are talking about the growth of the gas mask, as well as the position of the stamps of the headband. Now on the unstashes of the World Wide Web, you can easily find tables that significantly facilitate the procedure for selecting sizes.

For the growth of masks No. 1 with the total value of the sizes of the head to 1185 mm, fixation of the straps on the combination of 4-8-8 is provided.

If the sum of the two dimensions reaches 1 210 mm, then the straps are installed at 8-7-8.

For growth number 2, with the amount of girths in the range of 1215-1235 mm, the stops are 3-7-1, and if the total value of these sizes reaches 1 260 mm, then the straps should be fixed according to the 3-6-7 scheme.

The following options are possible with the third size:

  • in the range from 1 265 to 1,285 mm – 3-7-7;
  • up to 1 310 mm – 3-5-6;
  • more than 1315 mm – 3, 4, 5.

It is worth focusing on the numbering of belts. In this situation, the first, second and third digit is the frontal, temporal and peeling straps, respectively.

User manual

After the appropriate gas mask is obtained, it is required to pay attention to its completeness. The algorithm of action provides for the following steps.

  1. Remove the device from the package.
  2. Pull out the liner by placing it back to the box.
  3. Carefully examine all parts of the structure to identify defects and shortcompact. In particular, we are talking about all buckles.
  4. Remove the screen and unscrew the external saddle of the valve responsible for exhalation, to check the status of its petals. In parallel, the presence and integrity of the sealing element is checked.
  5. Inspect the glasses carefully glasses and clamping elements for films (rings or cords) in order to detect cracks, chips and other damage. The clamping items are required to insert into the appropriate grooves of the points node.
  6. Make sure in the health of the intelligence assembly, as well as the fasteners of the fairing. In the saddle of the valve must be attended by a rings.

The next step will be a Civil Gas Assembly of the GP-7 series, implemented according to the manufacturer’s instructions. The procedure is presented below.

  1. Thoroughly wipe the facial part of the device from the inside and outside with a wet pure cloth or wool.
  2. Fully dry the treated mask.
  3. Remove the rubber screen and unscrew the outer saddle to blow the shut-off exhalation unit.
  4. Twist the cap, equipped with a sealing gasket, with a filter box, and from its bottom – a plug. All listed elements after dismantling need to be placed in polyethylene packaging from under the front part and put in one of the bids.
  5. By placing a mask in one hand, another connect the filter element by screwing it up.
  6. Extract clamping elements (rings or cords made of rubber) from landing groove points.
  7. Rub the glass.
  8. Open the NPN and remove the 2 unsuitable element. The remaining films together with the box are needed to close and put in one of the bids.
  9. Taking gently film, put it in the grooves. It does not matter exactly which the film will be rotated to the glass.
  10. Insert the clamping cord or ring. At the same time, it is important to carefully fill them into the appropriate grooves.
  11. With a second unsuccessful film it is necessary to produce similar actions.

It is important to remember the need to be able to properly wear gas masks.

It is worth noting that it is necessary to do it as quickly as possible.

The procedure for putting on the device provides a number of uncomplicated actions, namely:

  • Location in the hands of a gas mask, placing thumbs inside;
  • Place the chin in the excavation of the obturator formed in its lower part;
  • Wear a headband by making up and simultaneously backward;
  • tighten and fix the cheek straps as much as possible;
  • When identifying even small disks, the mask, the obturator or belts need to be eliminated.

In the presence of distortions in the chin area, you will need to remove the gas mask and adjust the length of the corresponding straps.

Storage

It must be remembered that the GP, like any other devices, has a certain period of full service. The creators of the instruments under consideration have developed special rules of operation, as well as storage. And speech, in particular, is about the following important points.

  1. It is required whenever possible to prevent damage to structural elements. This applies not only to the filtering module, but also locking devices of the blocks of inhalation and exhalation.
  2. Special attention should be paid to the negotiation device, the dirt, sand and dust should not fall on the membrane.
  3. Even the slightest moisture getting into the filter element must be prevented. In other words, the gas mask must be in the most dry room.
  4. All similar devices designed to protect against harmful substances are required to be stored in removal from heat sources at least 3 meters.

        It is worth considering that the manufacturer’s guaranteed expiration date of the described type of civilian funds is 12 years. At the same time, the maximum indicator in this case can reach 25 years from the date of the device. After this period of GP-7 is subject to mandatory replacement.

        GP-7 Gas Overview See More.

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