GP-7 is considered one of the most reliable modern models of gas masks. It was invented to protect against a wide variety of toxic substances. It protects well the face area, respiratory organs, eyes. Theoretically, situations are not excluded when, due to an emergency or penetration of harmful suspensions, the population may need gas masks GP-7.
Means of protection of the population must be present in every home. In the event of unforeseen situations such products can save a person's life. What is a GP-7 civilian gas mask, how its work principle is structured, everyone should know.
The civilian gas mask filter GP-7 is a means to protect the person from harmful substances. It eliminates poisonous, destructive impact on the respiratory system, eyes, skin. It prevents the penetration into the organism of harmful substances in the air. This model was specifically developed for ordinary citizens. Therefore, they may be applied even to patients with respiratory diseases and people over the age of 60 years.
The front part has a design that allows you to supply water to a person with the help of an army standard flask. Also, the device has a filter box, which is located in a protective metal case. The front part can be 3 sizes (depending on the person's height).
Glasses give a person a good overview. They are covered with a special film, so their transparency does not deteriorate. The GPZh-7 civilian gas mask may also have a storage bag in the delivery set (in some cases, the knitted case may be missing). In the model GP-7VM additionally there is a flask of metal or plastic.
Purpose of a gas mask GP-7 has an extensive scope of application. It is able to protect the body from the ingress of poisonous gases, radioactive particles, dust, iodine radionuclides, chemicals and biological suspensions.
The presented product prevents ingestion of nerve gases (sarin, soman, etc.), chlorocyan and other toxic compounds and substances.
He also resists the effects of mustard and similar blister-type attacks. However, his defense lasts in this case no more than 2 hours. When determining radioactive components in the air, GP-7 can protect the body from them for up to 6 hours.
The presented gas mask is ineffective when carbon monoxide, methane and other organic-type substances that are characterized by a low boiling point are released into the air.
The civilian gas mask GP-7 has a number of special technical properties. Before using this equipment, you should be familiar with the main features. The weight of the device without a bag is 890 g. The box with internal absorber has a mass of not more than 250 g.
The percentage of penetration of the FPC of the oil aerosol mist is not higher than 0.0001%, and in the iodine-131 radionuclide pairs it is not higher than 0.001%.
The device can be operated in the temperature range from -40 to + 40ºС. Depending on the type of substance that is delayed by the internal filters, the time of protective action can be from 2 to 1000 hours. The average duration of operation is 1.5-2 days. All transcripts of the duration of the protective action are given in the manufacturer's instructions.
The device of a gas mask GP-7 includes several obligatory components. First of all, an absorber box is attached to it. It separates clean air from harmful impurities, steam and other unacceptable to humans substances.
The front part is made in the form of a mask made of thick rubber. There are glass on it. The package includes 6 films that prevent fogging. They are packed in a separate box.
Gas masks GP-7 have sealing cuffs for a quantity of 2 and a pouch for storing the device. Clamping the cord is made of rubber. The package contains two copies. Be sure to include a user manual and form.
The decision of the Chairman of the headquarters of the civil defence gas masks presented model can be supplied without a liner of plastic. The kit may include a clamping ring. They are available in the form of a cord of rubber. There are modifications of the presented products may have slight differences. However, the General principle in any event is maintained.
Gas mask GP-7, the specifications of which will be used in various emergency conditions, has complete filter element. Box for the absorber may be made of aluminum alloy or sheet metal. It has a cylindrical shape.
To increase the density of the box, a zigzag stamping was made on it. In its upper lid there is a threaded neck. It is designed to connect the structure with the front part. When storing it is sealed with a metal cap.
The bottom of the box has a hole. Through it, the unpurified air enters the filter element. If you want to keep a gas mask or cross it with water barriers, the hole is closed with a stopper.
Gas mask GP-7, the specifications of which are characterized by high protective performance, the inside of the box has a whole system of filters of different types. The layered structure of the materials allows better cleaning of the airflow which enters the respiratory tract of a person.
Inside the box is equipped with a coal-catalyst (mixture) and anti-aerosol absorber. The latter consists of a plate filtering cardboard. This material is made according to a special technology and is laid in the form of straight or figured folds.
The mixture is between the extruded material type of mesh. The upper backing has a padboard layer. It retains coal dust, preventing it from entering the airways.
Filter mask GP-7 has a durable design of the front part. It has a sturdy rubber masks. In addition to the film against fogging when using the device in cold applied insulating cuffs. This enables the glass not covered with condensation.
The front part is made in the form of a spacious mask with a stand-alone obturator. There is also a node for viewing, a device for communication (created in the form of a membrane). Included are fairings and locking rings for films. Also in this department is a valve for the implementation of respiratory activity.
A stand-alone obturator has the shape of a thin and long strip. It seals the front of the head.
The headrest is made in the form of an occipital plate with 5 straps. Temporal, frontal strips for fixation are supplied to the product with three plastic buckles. Metal buckles of a self-tightening type are used for buccal straps.
Gas mask GP-7, the characteristics of which were discussed above, may have several important additions. Their use can significantly improve and expand the scope of application of the device.
The fabric cover, which is most often included in the delivery package, is still not available in all gas masks of the type presented. It is put on the filter box and prevents dirt, moisture or coarse particles from getting inside the device.
When the DPG-3 cartridge is supplied with the GP-7, a person receives additional protection against chloride, cyan hydrogen, amines and other similar substances. This allows you to significantly expand the scope of human activity in terms of pollution by various substances.
Gas masks GP-7 have a number of advantages. First of all, technologists significantly reduced the resistance of the metal box, which facilitates respiratory processes. It is very important for people with lung diseases, as well as senior citizens.
A special form of a petal valve system ensures instantaneous closing of the camera box and prevents their deformation during aging pieces of equipment. Offline obturator allows for a long time to be in the mask. It does not appear discomfort, as the pressure on the face minimal.
The undoubted advantage of the presented model is the presence of a more perfect membrane that allows you to clearly transmit voice messages, facilitating the use of communication systems.
Having considered the features of the application and the device, which GP-7 gas masks possess, one can say that it is high-quality, modern protective equipment. It has several advantages. To operate it properly, you must carefully read the manufacturer's instructions and follow all recommendations in accuracy. This will be the key to safely finding a person in an environment with various air pollution.