The M53 facepiece assembly is built on a butyl and silicone rubber formulation similar to the M50 and M51. They serve as inlet disk valves and permit filtered air to enter the mask. In the development of the M50, the XM50 was put on a unique and innovative modelling and simulation test fixture that was developed to allow a more realistic form, fit, and function of the mask during evaluations using live agents, ensuring maximum real-world protection. The adoption of the M61 series filters departed from the Standard NATO Agreement (STANAG) governing NATO filter sizes (STANAG 4155) that require a 40mm screw-mounted filter with a 1/7 turn ratio. These ingredients are toxic and can cause mucous membrane irritation, but are safe as long as the shelf life indicator patch is not disturbed. [1] Other variants were developed based on the M50 design for specific needs of certain military populations such as the M53 for the Special Operations Forces (SOF) community. Intelligence agencies were growing increasingly concerned with the development and proliferation of 4th generation nerve agents--the so-called Novichok agents. Weight Improve drinking system for easier use and greater flow of liquids. Computer-aided design and airflow computer models were used extensively in the design of the mask. MCRD-CBRN-1001 Employ the Field Protective Mask (FPM), Medical Management of Chemical Casualties Handbook, https://gasmaskandrespirator.fandom.com/wiki/M50_Series?oldid=41177. Noah Koehl clears his M50 during an exercise The unit can be used in a stealth mode with a special cable that deactivates the external headset microphone to eliminate ambient noise and to allow the user to communicate through radio with whispered communications. US Army US Marine Corps US Air Force US Navy The facepiece is designed with an inverted peripheral face seal and an integrated chin cup. The primary purpose of developing this mask was the flexibility it offers SOF for special missions. Filters: Twin, low profile M61 filter elements, one installed on each side of the mask, provide protection from CBRN agents. Expired filter elements should be changed immediately in an operational environment, but they still may be used for training purposes in low-risk mask confidence exercises (CS chamber). The program managers gathered information from all viewpoints, to include: In the mid-1990s, the M40 series masks were replacing the old M17 series throughout the armed forces of the United States but CBDCOM (later SBCCOM) was already looking forward to the next mask series. The purified air is delivered to the wearer when he breathes in, or in other words, reduces the pressure in the mask to less than outside pressure, hence the name "negative pressure.".
It provides excellent protection against traditional chemical and biological warfare agents, selected Toxic Industrial Materials (TIMs), selected Toxic Industrial Chemicals (TICs) and particulate matter including radioactive dust. CCBA (Closed Circuit Breathing Apparatus). The nose cup size (S, M, L) and the internal drink tube alignment arrow are located on the left interior side of the nose cup. Secondary Filtration Media - No one filter media formulation can protect against all conceivable threats at the same time, so an additional filter is being developed to augment the standard M61 filter for specific missions. When vacuum sealed these filters have a shelf life of 5-10+ years. Laser protective (green) and high contrast (yellow) outserts are also available for special missions. The M50 and M51, officially the Joint Service General Protective Mask (JSGPM) is a lightweight, protective mask system consisting of the mask, a mask carrier, and additional accessories. The production M50 mask had a black nose cup and valves. A patch assembly is located on the back of the M61 filter to show the health of the filters based on time out of its protective packet. Manufacture date is 2015 with a 2020 inspection date. During exhalation, the positive pressure created inside the mask closes the inlet valves and opens the outlet valve housed in the front module main body assembly. Be the first to review “Avon M50 Gas Mask Primary Filter Set, Vacuum Sealed, M41 US Mil-Spec”. 0 Field of View The M50/51 masks replaced the M40 and M42, MCU-2/P series of masks, and the M45 in the Land Warrior Program. Consequently, there were few actual prototypes used in the development of the mask however, there were several mockups to illustrate different features for decision-makers. [6], The facepiece assembly, head harness, eye lens outsert assembly, front module assembly, M61 filters, and drink tube coupler and housing are the principal operating components of the M50 Field Protective Mask.[7].
One end of the communications lead is connected to the communications port on the front of the front module assembly; the other end is connected to the combat vehicle helmet and provides the capability for on-vehicle communications. %%EOF Made in Filter alignment marks are molded into both the M61filters and the facepiece assembly to ensure the proper attachment. The clear outsert is issued with an outsert pouch which can also be used to clean the mask. M50
The program managers gathered information from all viewpoints, to include: Reports from the field indicated that the M40 series mask was described as too bulky and heavy for modern military operations. The outlet valve cover assembly fits over the front module's main body protecting the drinking system and outlet disk valve. The protective hood attaches to the mask and is placed over the service member's head. Required fields are marked *. A mask that could filter out common industrial hazards would greatly assist sensitive site exploitation and other military operations. It has a communications port cover to protect the "prewired" communications port. The facepiece assembly incorporates a single, flexible, polyurethane eye lens; drinking system components; a communications interface; and single filter mount assemblies with a 40-mm NATO thread that integrates the inlet disk valve and air deflector. A lever arrangement opens the drinking tube safety shutoff valve and causes the internal drinking tube to swing to the wearer’s mouth.
When the mask is worn, the filter element stuck out of the face blank of the mask and became a natural "lever arm" that could break the seal of the mask when working in confined spaces or simply through the rigor of combat operations. Lance Cpl. The other two are located in the interior of the facepiece assembly and are attached to the rear of the left and right filter mounts. In a throwback to the M17 series mask, the filters are mounted to either side of the mask to provide an evenly weighted balance to reduce the wearer's fatigue of the neck and upper back muscles.
The chlorobutyl content of the rubber formulation limits permeability to chemical warfare agents, however, a hood/second skin is still available for more comprehensive protection. h�b```"c��� ������L�L�PAF()����qa��^Z�Nj�!70\d�Q`a�� p�U��ށC�ѐA� �U���sV`�������$i�hV��&�T�!I����8b(�h��ґa�@�o�����@����"]|L4��\b`���̙�L��X�:��Lh0�����c>�@� rex It has the same contour as the eye lens and clips over the eye lens using outsert locking tabs that do not interfere with the wearer's vision.
The M53 protective mask from Avon promotional material. The mask is the same as the M50, but has a few extra items to interface with the vehicle's communication system and collective protection system: M51 showing hose assembly and fire-resistant hood. Unlike the M17 series mask, the filter elements are located on the outside of the mask and can be changed in a contaminated atmosphere due to the self-sealing filter mounts. Preceded by When adjusted properly, they will secure the facepiece assembly to the wearer's face creating an airtight seal. A particulate filter is also available as an additional authorization list item. Your email address will not be published. Fully integrate the mask into the warfighter's combat ensemble for the next generation. Ability to safely and quickly change filters while in a contaminated environment. Noah Koehl clears his M50 during an exercise, Avon Protection Systems (APS) M53 U.S. Special Operations Gas Mask Respirator at SOFIC 2011. There are three black colored inlet/outlet disk valves contained in the facepiece assembly: One is located between the outlet valve cover assembly and the front module main body assembly. In the mid-1990s, the M40 series masks were replacing the old M17 series throughout the armed forces of the United States but CBDCOM (later SBCCOM) was already looking forward to the next mask series.
Program managers, industry partners, and end-users from all services contributed to an ambitious set of design goals for the new M50 protective mask to include:[2]. Microphone, Microphone Adapter, and Communications Lead: The microphone is attached to a microphone adapter that is attached to the communications port in the front module main body inside the facepiece assembly. APR (Air Purifying Respirator)- A negative pressure mask using NATO thread filters that operate like any other CBRN protective mask. The head harness consists of a skull cap, and elasticized brow straps, temple straps, and cheek straps.
Reduce breathing resistance by half over currently fielded masks. The communication system built into the mask is specifically designed with the SOF community in mind. Color code repair parts for easy identification. The patch begins as white when they are taken out of the vacuum-packed container and will turn blue when the filter is expired and should be changed. The patch is made with erioglaucine ammonium salt and magnesiumnitrate hexahydrate and changes colour from white to blue with the exposure to humid air. The additional filter simply clips onto the current M61 filter and provides an extra layer of protection for specific threats. Be the first to ask a question about this product. The unit is operated with a switch on the front of the unit and amplifies the voice from a microphone located in the nose cup assembly. By ordering this item, customer warrants that they have the required training and authorization to use this item.