EXAIR Compliance with OSHA 1910.242(b)

OSHA Standard 1910.242(b) discusses the use of compressed air for cleaning and blowoff. It states that the use of compressed air for cleaning purposes is prohibited if the dead-ended pressure exceeds 30 psig. This phrase means the downstream pressure of the air nozzle or gun, used for cleaning purposes, will remain at a pressure level below 30 psig for all static conditions. In the event that dead ending occurs, the static pressure at the main orifice shall not exceed 30 psi. If it does exceed this pressure, there is a very high potential for it to create an air embolism. An air embolism, left untreated, can quickly impede the flow of blood throughout the body. This can lead to stroke, heart attack, and sometimes death.

So making sure you are in compliance with 1910.242(b) is truly a life and death situation. Most people believe that lowering the pressure to the blow off device is the only method to keep their operators safe from an air embolism. However this can become a problem when you really need the force of greater than 30 PSIG to complete your operation. We at EXAIR want to give you the flexibility to run at any pressure with out the risk of building that 30 PSI of dead-end pressure! We do this with our line of Intelligent Compressed Air® nozzles! All of EXAIR’s Air Nozzles are designed so that the flow cannot be dead-ended. The fins on the Super Air Nozzles are not only useful in amplifying the force by drawing in ambient air, but they also prevent an operator from completely obstructing the airflow.

Another great example of this is our 2″ Flat super air nozzle. The design not only allows the nozzle to amplify the air flow in the blast of air, the over hang will not let the dead end pressure build as it can escape around the edges and bottom!

2″ Flat Super Air Nozzle

If you’ve got questions about compressed air safety or have an existing blowoff in place that does not adhere to this OSHA directive, give us a call. We’ll be sure to recommend a solution that will keep your operators and wallets safe!

Jordan Shouse
Application Engineer

Send me an Email
Find us on the Web 
Like us on Facebook
Twitter: @EXAIR_JS

EXAIR Soft Grip Safety Air Gun

EXAIR Safety Air Guns use engineered air nozzles for high performance. Inexpensive air guns are sold through many catalogs and industrial supply companies. Most have triggers or other parts that break quickly. Their performance is similar to open pipe, where they simply blow a lot of compressed air. In addition to high air consumption, many produce noise levels that violate OSHA requirements. Some even generate dangerous dead end pressures that can result in serious or fatal injuries if blocked.

EXAIR Model 1210 Soft Grip Safety Air Gun

EXAIR’s Soft Grip Safety Air Gun has a durable cast aluminum body that is best suited for rugged industrial use. The ergonomic design has a larger trigger for easy operation and a convenient hanger hook for easy storage. Chip Shields for worker safety are available. Extension pipes and stay set hoses for hard to reach areas are also available.

The inefficient use of compressed air for blow-off applications may create problems due to noise level. High noise levels are a common problem for many plants. Compressed air noise often exceeds OSHA noise level exposure requirements, resulting in close proximity.

Air can also be dangerous when the outlet pressure of a hole, hose or copper tube is higher than 30 PSOG (2 BAR). In the event the opening is blocked by a hand or other body part, air may enter the bloodstream through the skin, resulting i a serious injury.

EXAIR Safety Air Guns use our engineered air nozzles which meet or exceed OSHA Standard 29 CFR – 1910.95 (a) Maximum Allowable Noise Exposure and also OSHA Standard 29CFR 1910.242 (b) Harmful Dead End Pressure.

If you need help choosing the right Safety Air Gun and Engineer Air Nozzle please contact any of our qualified Application Engineers.

Eric Kuhnash
Application Engineer
E-mail: EricKuhnash@exair.com
Twitter: Twitter: @EXAIR_EK

Product Spotlight: Soft Grip Super Air Scraper

Have you ever dipped your hand into a warm bath of paraffin wax? You can feel your hand relaxing. When you pull it out and begin to peel the wax away you can already tell how soft and refreshed your hand feels. And then someone gives you a hand massage while you sit there in complete bliss, your hand completely relaxed and rejuvenated. Well, this is not at all how the Soft Grip Super Air Scraper makes your hands feel. But the Soft Grip handle is very comfortable and does feel better than any other option on the market.

The Soft Grip handle is ideal for continuous use without causing fatigue. The design keeps your hand in a comfortable position and the large trigger allows an easy pull with one finger or all of them. This is built to endure the toughest industrial environments, and it even comes with a convenient hangar hook for easy storage.

Scrape off, and blow away, stubborn debris with the Model 1244-48 Soft Grip Super Air Scraper.

Once we get past the comfortable handle, we move down to the purpose. The Air Scraper portion will assist in removing some of the toughest debris found in industrial facilities. The patented design uses the scraping blade along with powerful compressed air flow. This is perfect for any of those sticky substances like caulk, sealants, gaskets, adhesives, tape, paint stickers, labels, grease, lubricants, and so much more. This will help you keep your machining tables, and assembly stations clean and functional.

The scraper is made of corrosion resistant steel and is attached to a 2″ Super Air Nozzle. It is very formidable to provide the strength necessary for the toughest scenarios. This comes with a 3/4″ extension for those close up needs, but we offer extensions for this from 6″ to 72″ long so that you can reach table tops, walls, inside machines, and floors.

Please reach out to us at anytime with questions about the Soft Grip Super Air Scraper, or any of our other amazing products.

Thank you for stopping by,

Brian Wages

Application Engineer

EXAIR Corporation
Visit us on the Web
Follow me on Twitter

Coanda Profiles: Who, What and How

Henri Coanda was a Romanian aeronautical engineer most known for his work developing what is today known as the Coanda effect. The Coanda effect is the propensity of a fluid to adhere to the walls of a curved surface. A moving stream of fluid will follow the curvature of the surface rather than continuing to travel in a straight line.  This effect is used in the design of an airplane wing to produce lift. The top of the wing is curved whereas the bottom of the wing remains straight. As the air comes across the wing, it adheres to the curved surface, causing it to slow down and create a higher pressure on the underside of the wing. This  is referred to as lift and is what allows an airplane to fly.

The Coanda effect is also the driving force behind many of EXAIR’s Intelligent Compressed Air Products. Throughout our catalog and website you’ll see us talking about air amplification ratios. EXAIR products are designed to take advantage of this phenomenon and entrain ambient air into the primary air stream. Compressed air is ejected through the small orifices creating air motion in their surroundings. Using just a small amount of compressed air as the power source, Super Air KnivesAir Nozzles, and Air Amplifiers all draw in “free” ambient air amplifying both the force and the volume of airflow.

Entrainment
EXAIR Intelligent Compressed Air Products such as (left to right) the Air Wipe, Super Air Knife, Super Air Nozzle, and Air Amplifier are engineered to entrain enormous amounts of air from the surrounding environment.

Super Air Knives provide the greatest amount of air amplification at a rate of 40:1, one part being the compressed air supply and 40 parts ambient air from the environment. The design of the Super Air Knife allows air to be entrained at the top and bottom of the knife, maximizing the overall volume of air. Super Air Nozzles and Super Air Amplifiers also use this effect to provide air amplification ratios of up to 25:1, depending on the model.

HowItWorks
Air Amplifiers use the Coanda Effect to generate high flow with low consumption.

The patented shim design of the Super Air Amplifier allows it to pull in dramatic amounts of free surrounding air while keeping sound levels as low as 69 dBA at 80 psig! The compressed air adheres to the Coanda profile of the plug and is directed at a high velocity through a ring-shaped nozzle. It adheres to the inside of the plug and is directed towards the outlet, inducing a high volume of surrounding air into the primary air stream.

Utilizing the Coanda effect allows for massive compressed air savings. If you would like to discuss further how this effect is applied to our Super Air Knives, Air Amplifiers, and Air Nozzles give us a call. We’d be happy to help you replace an inefficient solution with an Engineered Intelligent Compressed Air Product.

Jordan Shouse
Application Engineer

Send me an Email
Find us on the Web 
Like us on Facebook
Twitter: @EXAIR_JS