MSA BD2100 series of self-contained positive pressure air breathing apparatus [151 0 699 23 28 05 31-88 79 01 09 Tian] positive pressure air breathing apparatus MSA MSA air respirator positive pressure air breathing apparatus, the bd2100 air breathing , Bacou air respirator Sperian air breathing air breathing air pump oxygen breathing apparatus air pump] is an open-style self-sufficient in gas supply equipment. Use the wearer does not depend on the ambient air, instead of using a high pressure breathing air filling the cylinder through the pressure reducer twice after decompression, the input mask for the human respiratory. Exhaled air through the exhalation valve on the mask to the atmosphere. Normal state. The pressure inside the mask is always slightly higher than the pressure of the external environment, which is very effective in preventing the toxic and harmful gases in the external environment into the mask, in order to fully protect the safety of the user's breathing. MSA BD02100 series of self-contained air breathing apparatus specifically for the oxygen-deficient, toxic or harmful gas environment operations use. Provide effective respiratory protection. The products are widely used in many industries and fields of fire, metallurgy, chemical industry, petroleum, electricity, shipping, mining, medical. 
 First, the product features 
 Products meet the public security fire GA124-2004, GB16556-2007 standard; 
 2L/3L/4.7L/6.8L/9.0L/2X6.8L and other kinds of specifications configuration of carbon fiber composite cylinders; 
 Ranging from 30 minutes to 120 minutes of air supply time; 
 The cylinder valve hand wheel for lateral design, ergonomic design principles; 
 Flame retardant enhance the backrest and straps, and fully adapt to a variety of harsh environments; 
 Shoulder strap has a special reflective film, so that the operator companion search in the dark, so that the operation to the greatest degree of protection, and coordination team; 
 Supply pipe through the shoulder strap in, you can get a more secure and fixed and protection; 
 The unique plug-button chest strap design, they bear the respirator is more stable; 
 Two belt tightening of the design: horizontal or lateral (national patents), and fully reflects the "people-oriented design concepts; 
 The pressure regulating valve, small size, flow rate; 
 Easy operation: pressure regulator and mask the fast socket connection, one-hand operation; 
 The mask in particular the open field of vision, fit closely with the Asian face, wear comfortable, scratch-resistant lenses, non-section design. So that the wearer's line of sight from any angle will not be deformed; 
 There are a variety of different styles of masks and materials to choose from; 
 Can quickly configure a variety of expansion capabilities, and three links to his rescue, and lengthening the alarm and the external gas source switching; 
 Line with European EN136, EN137 standard. 
 Second, the cylinders: 
 U.S. production of carbon fiber composite bottles, monolithic aluminum alloy liner, corrosion resistant, to engage in impact; 
 Working pressure of 30MPa, the hydrostatic test pressure of 50MPa, the burst pressure is greater than 120MPa; 
 Cylinder pressure indicator, pressure values ??at any time to facilitate inspection and maintenance; 
 Lateral design valve, quick and easy to operate; 
 The red valve rotation, eye-catching bright color; 
 Cylinders in line with Europe HSE-AL-FW2 or the United States the DOT E-10 945 standard. 
 Third, chest pressure gauge: 
 The waterproof structure designed to prevent rain moisture to enter the pressure gauge internal operations; 
 Fluorescent design allows operation in a dark environment clearly observed value; 
 Red alarm area, clear and easy to see; 
 Excellent seismic performance, able to cope with a variety of harsh operating environment; 
 Wide range of design to meet the needs of a variety of design working pressure. 
 Fourth, the relief valve: 
 MSA Germany, the imported products; 
 The pressure regulator gas by decompression again reducing valve output pressure air to the mask, the pressure slightly higher than atmospheric pressure, always maintain a slight positive pressure within the mask; 
 Instantaneous maximum supply capacity of 500L/min; 
 High pressure valve, small size, simple structure, convenient operation, only the operation of the switch is on the side of the red button, a total of three locations: button in the outermost working condition; off in the middle; Press and hold is the bypass - when the pressure regulator to 240L/min constant current supply; 
 Dynamic respiratory resistance: when in 40X2.5L/min respiration, the inspiratory resistance of 90 ~ 115Pa, expiratory resistance of 650 ~ 670Pa; when in 25X2L/min respiration, the inspiratory resistance of 160 ~ 190Pa, expiratory resistance 620 ~ 650Pa. 
 Fifth, the strap and chest strap: 
 Flame-retardant polyester material, to withstand the harsh operating environment; 
 Heat reflective tape optional, and can easily be found in the car darkness; 
 The generous cushion design back by feeling more casual; 
 The unique strap design, so bear respirator more stable. 
 Six, the belt: 
 Generous cushion designed to make the bear feel soft and comfortable; 
 Lateral adjustable buckle design, convenient to the operator to move to tighten; 
 The national utility model patents, design, more humanized; 
 Traditional horizontal design allows the operator to tighten the simple to the lateral. 
 Seven, pressure reducing valves: 
 MSA imported from Germany; 
 Pressure reducing valve is a cylinder air decompression to about 0.7MPa, the output pressure setting after locking by the locking mechanism; 
 Pressure reducing valve output design of safety valve, to prevent the pressure relief valve failure, high pressure air into the medium voltage system; 
 Flanking of the safety valve is the whistle of alarm devices, alarm whistle will be sounded when the cylinder pressure to 5.5 ± 0.5MPa, whistle for continuous sound, its sound in the distance of one meter measured the 95 ~ 97dB alarm whistle duration of more than eight minutes, and air consumption only 3L/min