Types of filter cartridges
RPG-67 breathing apparatus filter cartridges are classified according to their intended purpose, depending on the chemical-physical and toxic characteristics of hazardous impurities - they can be classified according to the structure and structure of active absorbers.
Thus, the A1 breathing device is used to protect against the following substances:
- acetone;
- kerosene;
- benzene;
- petrol;
- aniline;
- ethers;
- xylene;
- toluene;
- nitrate-containing benzene compounds;
- tetraethyl lead;
- alcohols;
- carbon disulfide;
- phosphorus-containing YC;
- chlorine-containing YC.
Grade B is used in contact with acid gases, these include:
- hydrocyanic acid;
- chlorine-containing YC;
- phosphorus-containing YC;
- hydrogen chloride;
- phosgene;
- hydrocyanic acid;
- sulfurous anhydride.
Grade D protects against mercury as well as organic mercury chemicals based on ethylmercuric chloride. The KD brand is intended for use of a respirator in environments with increased concentration:
- ammonia;
- amines;
- hydrogen sulfide.
All of the above replaceable filters can be used strictly to protect against hazardous compounds in the form of vapors and gases, the anti-aerosol filter is not provided in this version of half masks. That is why wearing the RPG-67 to protect against dust particles, especially small ones, as well as smoke, does not make any sense - the vast majority of such particles pass freely between the absorbent granules.
These models differ from each other exclusively in the type of cartridges - in RPGs they have a rather flat shape, and in RU they are high. This purely external difference makes breathing through the RPG respirator slightly more difficult. However, in both cases, both gas protection devices are completely identical - having acquired one model of respirator, you can safely use cartridges from the other in your work.
You can watch an overview of the RPG-67 respirator and some other models in the next video.
Specifications
Respirators RPG-67 are used to protect the human respiratory system from toxic substances in the atmosphere in a gaseous and vapor state if their concentration does not exceed 10-15 PD
Please note that the respirator reaches its maximum efficiency if the oxygen content in the air gas mixture is at least 17%, and the ambient temperature is in the range from -40 to +40 degrees
The time during which the respirator has a protective effect is on average 70 minutes - these data were obtained as a result of a test using cyclohexane C6H12 at a concentration level of 3.5 mg / dm3. The actual period of protective action can vary from the specified parameter both to a smaller and a larger side - this directly depends on the characteristics of the operation and the concentration of toxic substances.
The RPG-67 respirator is a half-mask breathing apparatus, it is sold in three sizes. The respirator is selected by fitting a half mask to the face - the model is considered suitable for use by each individual user if the obturator is in close contact with the soft tissues of the face along the entire contact strip, while the penetration of air from the outside is completely excluded.
In accordance with the technical and operational parameters of the RPG-67 respirator with a volumetric air flow rate of 500 cm3 / sec. (30 l / min.), The breathing resistance on inspiration does not exceed 90 Pa, and on exhalation does not exceed 60 Pa. The respirator is distinguished by an ergonomic design, a lightweight model, due to which, even with prolonged wearing of the device, the user does not feel discomfort.The half mask is snug, but at the same time, softly adheres to the head and does not injure the skin.
The front part of the RPG-67 is made of soft elastic hypoallergenic material, which greatly increases the comfort of using a half mask, and also keeps the temperature as close as possible to the temperature of the human body. Thin elastic walls of the protective half mask make the front part as flexible as possible and at the same time reliably adjoining with a minimum number of contact areas.
The compact design does not restrict the angle of view and provides a complete overview. Ease of use is a nice bonus. All elements are made of high quality materials, a wide range of spare parts are provided, thanks to which the protective half mask can be used for a long time.
The manufacturer has thought of the most practical headband design. The fixation system consists of a pair of plastic straps made of rubber. They adjust the headband in four areas, thanks to the elastic retainer, the most comfortable fit on the head is ensured. The modern design of the belts increases the reliability of fixing the respirator on the face, allows you to drop the product at any time, ensures its quick fit and reduces the pressure level of the belt on the nose.
A well-thought-out system of fasteners allows you to pull off the RPG-67 without removing all other protective equipment, including helmets. Fasteners are particularly durable. The design includes two filters. The filter cartridges of protective masks can have a different composition of absorbers, each of them is designed for operation in certain physicochemical conditions and taking into account the characteristics of toxic impurities.
The service life of respirators is 1 year with timely replacement of the filter. Replacement filters have a shelf life of 3 years. On the territory of the Russian Federation, all respirators are manufactured in accordance with the current GOST R 12.4.195-99.
