SF6Positive pressure air respirator（Winfoss-G7）

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overview

Weaver CompanySF6Positive pressure air respirator（Winfoss-G7）It is a self-contained open air respirator. This series of products are used in fire fighting, chemical industry, shipping, petroleum, smelting, power, warehouse, laboratory, mine and other departments, for firefighters or rescue workers to safely and effectively carry out fire fighting, rescue and relief, rescue and other work in various environments such as thick smoke, toxic gas, steam and oxygen deficiency. It is an ideal personal respiratory protection device for firefighters and rescue workers.

Scope of application:

l Thick smoke, oxygen deficiency, and any atmospheric environment polluted by toxic gases, smoke, or steam.

l -30°C~+60°CRelative humidity0~100%Atmospheric pressure70kpa~125kpaThe atmospheric environment.

Technical Parameter

FEATURES

Gas cylinder:A gas cylinder is a high-pressure container used to store compressed air for human respiration, with a rated storage pressure of30MPaMultiple specifications of steel or carbon fiber composite gas cylinders can be selected. Carbon fiber composite gas cylinders are made by winding high-strength fibers such as carbon fiber and glass fiber with polymer materials using advanced equipment and technology outside the aluminum alloy inner liner. It is lightweight, strong, corrosion-resistant, and has a long service life.

Attention: When using or inflating gas cylinders, handle them gently and avoid strong collisions. The sudden release of high-pressure compressed air is very dangerous, so be careful when storing it.

bottle valve:Gas cylinder valve is an important component of gas cylinder switch gas source,There are two types of structural types. One is that the connection with the pressure reducing valve is externally threaded, with a thread size ofW21.8mm×1/14The British threaded joint. Another type is that the connection with the pressure reducing valve is internal thread, and the thread isM22×1.5perhapsG5/8'(14tooth/inch)The commonly used connectors areG5/8'(14tooth/inch)Threads are indicated on the cylinder head valve, and this type of cylinder valve is equipped with a high-pressure safety protection diaphragm. When the gas pressure inside the cylinder exceeds the rated pressure25%When left or right, the safety film will burst and the gas will quickly release pressure.

Attention: The safety protection film will burst and all the gas in the cylinder will be emptied. If the safety diaphragm bursts, the cause should be checked and a qualified specialized diaphragm should be replaced in a timely manner. Do not use other substitutes to replace the specialized membrane.

pressure reducer:A pressure reducing valve is used to reduce the pressure of high-pressure gas0.7MPaA device that supplies gas to a gas supply valve after a constant output pressure. The pressure reducing valve is installed on the back support and connected to the gas cylinder valve through a connecting nut handwheel. The gas source output end is divided into two parts: high pressure and low pressure. The gas from the high-pressure gas source is transported through a high-pressure pipeline to the high-pressure gauge and residual gas alarm; The low-pressure gas source after pressure reduction is transported to the gas supply valve through the medium pressure pipe. The low-pressure end is equipped with a safety valve. The connection between the pressure reducing valve and the medium and high pressure pipes is plug-in, which is more reliable and will not cause loose threads, and the pipeline can rotate freely.

back-up:The function of the back support is to support and fix the gas cylinder and pressure reducer. The weight on the back support is evenly distributed on both shoulders by the straps. The shoulder strap consists of a shoulder strap and a waist strap, both of which can be quickly adjusted in length to ensure that the back support is tightly attached to the back and buttocks of the human body. The steel cylinder is fixed on the back support by a quick fixing device, and the length of the fixing strap can be adjusted to fix cylinders of different diameters.

High pressure pipelines, pressure display and alarm devices:The high-pressure pipeline is a pressure resistant rubber tube that is responsible for delivering high-pressure gas to the high-pressure gauge and residual gas alarm system. The combination of high-pressure gauge and residual gas alarm can display the gas source pressure of the gas cylinder and emit an audible alarm signal when the gas cylinder reaches the design allowable pressure. The range of the pressure gauge is0~40MPaAt the working pressure of the gas cylinder30MPaAnd alarm pressure4~6MPaThere are red and blue area markings at each location. When the pressure of the gas cylinder drops to4~6MPaAt that moment, the residual gas alarm sounded90dBThe continuous sound reminds users to evacuate the site as soon as the gas source is running out. At this time, the gas cylinder source is available for the wearer to use5~8minute.

Air supply valve:Medium pressure air is delivered to the air supply valve through a hose connected to the pressure reducing valve. The air supply valve ensures the provision of low-pressure air to the mask. The gas supply valve is a positive pressure gas supply valve with a gas supply flow rate greater than300L/minIt is composed of a high-strength reinforced nylon shell, an automatic positive pressure gas supply device, additional gas supply and pressure relief mechanisms. The gas supply valve is equipped with automatic opening and breathing control switches. There are automatic positive pressure gas supply buttons, additional gas supply and pressure relief buttons, and quick interface dual buttons outside the gas supply valve. After the wearer wears the mask, it is immediately connected to the gas supply valve through the quick socket. At this time, the automatic positive pressure gas supply button has been pressed by the full mask interface, and the gas supply valve has been automatically activated. Gas then enters the mask mouth and nose mask for the wearer to use. When the wearer wants to stop using it, they can simultaneously press and hold the quick interface dual buttons, and pull out the gas supply valve to automatically turn off the supplyvalve. Only when you press this at the same time2The gas supply valve will only disconnect from the mask when a button is pressed.

The additional gas supply and pressure relief button is a backup safety mechanism that supplies a constant gas source directly into the mask without passing through the breathing switch. Pressing the additional gas supply and pressure relief button can continue to supply gas or relieve system pressure. Conversely, close the bypass valve. During normal operation, there is no need to press additional gas supply and pressure relief buttons. (See figure)6, picture7, picture8）

1-Automatic positive pressure gas supply button2-Quick plug button3-Medium pressure pipeline joint4-Additional gas supply and pressure relief buttons

full face mask:A full face mask is a positive pressure type mask with a single eye window, large field of view, good transparency, and double-layer annular sealing. The main body is made of silicone rubber, and the mask is equipped with a small mouth and nose mask that is adjacent to the mouth and nose. It reduces the actual harmful space and inhalation resistance of the full face mask. The mouth and nose mask is equipped with an exhalation valve to discharge exhaled gas outside the mask. The full face window is made of polycarbonate to eliminate optical deformation and enhance visual perception100%No distortion, always maintain clarity, brightness, and no fogging during use. The headband is connected to a tightening strap and a quick clip. The tightening strap ensures that the wearer's face is in contact with the double-layer sealing ring of the mask, ensuring safe and reliable use for the user. The full face mask can only be used after the gas supply valve is installed. (See)1-visors2-Reliable five point headband3-Oral and nasal mask4-Gas supply valve interfaceSee figure9, picture10, picture11)

Medium pressure pipeline:The medium pressure pipeline consists of two pressure resistant rubber flexible conduits and a quick connector. The gas source, which has been depressurized by a pressure reducing valve, is transmitted to the gas supply valve through the medium pressure pipeline. The quick connector is divided into two parts: socket and plug. The plug part is connected to the gas supply valve, and the socket assembly position is near the pressure reducing valve end. When the plug is not plugged into the socket, open the gas cylinder valve switch and the socket will be in an airtight state. A quick connector socket with a self-locking device, after inserting the plug, rotate the flexible ring on the socket clockwise to lock the quick connector in place. (Image)12, picture13）

1-Self-locking ring2-Quick connector female3-Quick connector male4-Pressure regulator output plug5-Medium pressure pipe at the pressure reducing end6-Medium pressure pipe at the gas supply end7-Connecting head with gas supply valve

Service guarantee

l Provide on-site training guidance and conduct on-site demonstration operations.

l Provide detailed Chinese manuals and user guidance.

l One year free warranty, lifetime spare parts support and maintenance.

l hotline365Answer user inquiries 24/7.