Avon Deltair Air Switch Mask “Like No Other”

Avon_logo deltair_bic_airswitch

  • Double curve visor provides for the best Firefighter field of view including, upward, downward and peripheral vision.
  • Integrated low profile air switch reduces snag hazards, reduces overall weight of mask and provides a balanced mask that does not pull outward and downward on the Fire Fighter’s face. This all contributes to the lowest profile, lightest weight and highest visibility mask available.
  • The mask mounted Air Switch provides true air management with the simplicity of controllable air by the Fire Fighter using a simple one handed glove operation. Included in the Air Switch is an easy to read white indicator for both the user and others to monitor.
  • The Air Switch provides a large diameter diaphragm providing the Fire Fighter with clear, crisp, and passive speech performance. The large diaphragm allows for unlabored breathing on ambient air when the Air Switch is in the up position; this helps reduce fatigue.
  • The Air Switch mask is a fully submersible design that allows for quick and thorough cleaning. The simplicity of design and the attention to detail using military specification components make the Avon Air Switch mask “Like No Other”.

Meeting the Demands of the Fire Service

Draeger X-am 2500 Multi Gas Personal Protection Monitor
Meets the Demands of the Fire Service


The newly designed Draeger X-am 2500 provides firefighters with these important features:

Ease of Use 

  • Two button operations provide failsafe and easy menu navigation
  • Large clear display provides gas values at a glance
  • Small, compact design
  • Quick and intuitive bump testing and calibration procedures




  • Sensors not sensitive to shock, vibrations, or impacts
  • Monitor has an integrated protective rubber coating
  • Monitor is IP67 rated for dust and water intrusion protection

Long Lasting Sensors and Monitor

  • The O2, CO, and H2S sensors have a 5-year sensor warranty
  • The LEL/EX sensor has a 3-year warranty
  • The remainder of monitor carries a bumper-to-bumper 3-year warranty

Economical and Simple to Maintain

  • Calibration and bump testing can be accomplished with either the revolutionary X-Dock testing and calibration station or with the bump test station—both reduce the use and cost of calibration gas
  • The Draeger sensor warranty and longevity reduce costs right from the start of ownership, and all the way through the life cycle of the product
  • The X-am 2500 can be equipped with either alkaline AA batteries or with NIMH batteries; both provide the monitor with a full 12-hours of run time

Choosing the Right Breathing Air System!

(Admittedly LONG, but really worth the read — stick with us here!)

The Highly Variable Demand Approach to Choosing the Correct Product
By: Anthony M. Gonzalez, Owner, Eagle Compressors
(excerpts taken with permission)

What are your needs?  High pressure breathing air systems are used by fire depart­ments to refill their Self-Contained Breathing Apparatus (SCBA) and Self-Contained Underwater Breathing Apparatus (SCUBA) cylinders. It is difficult, even for the most experienced organiza­tions, to determine how many and how often they will need to refill cylinders during any given period of time. Understandably, this is or should be of significant concern to the Fire Department as the consequences of the approach taken to get to the answer will determine how successful or undesirable the equipment selection will be.

How much do you have to spend?   This response is not only universally despised but also has the very realistic potential to lead to a very short-sighted decision. Even if the question is en­tertained by the prospective customer, the amount mentioned can usually be counted on to be highly inadequate. Further­more, the response ends the discussion and little else can be learned by either party that can lead to a good decision.

The real challenge is to develop a method by which users can compare the real value of one machine size over another. For example, any of us would have difficulty in understanding the real value of a compressor with a charging rate of 21 cubic feet per minute (CFM) over one with 14 CFM charging rate. Other than the obvi­ous difference of 7 CFM, no one can see the value of one over the other without at least two other factors of performance for comparison.

One of the best ways to compare the value of machinery is to determine how fast they can do their job compared to how much they cost. Time and money are the two variable factors that would help lead the customer to a fundamentally good decision. I call this the System Calculator process. This requires obtaining critical information from the department. The steps are as follows:

 A. Data Collection
The following is information required for the System Calculator process.

1. The number of SCBA and or SCUBA gear that the depart­ment has. Do not count spare cylinders, just the apparatus that would be used if all were manned. It is important to know if the department fills for other organizations. If so, count that gear also.

2. Determine the volume of the cylinders used with the apparatus above.  Typical cylinder volumes are as shown below:

4500 PSI SCBA Cylinders

  • ½ Hour cylinders =45 cubic feet
  • ¾ Hour cylinders = 62 cubic feet
  • 1-Hour cylinders = 88 cubic feet
  • Scuba cylinders (the most popular size, 85% of the market) = 80 Cubic feet

5500 PSI SCBA Cylinders

  • ½ Hour cylinders = 45 cubic feet
  • ¾ Hour cylinders = 62 cubic feet
  • 1-Hour cylinders = 88 cubic feet
  • 75-Min. cylinder =111 cubic feet

*It can be noted in the calculation for time to fill that the SCBA working pressure is not part of the equation.  However, it is imperative to know if the customer is using or planning to fill any (5500 PSI) SCBA cylinders.  The compressor manufacturer must know about the use of the 5500 PSI SCBA as the compressor will need a different design air pressure switch that is normally used on compressors filling 2216/3000/45000 PSI cylinders.  Pressure switches on the lower pressure SCBA cylinder compressors do not normally restart until the storage pressure drops to approximately 5400 PSI, so attempting to fill 5500 PSI cylinders will not work as the compressor will not re-start to get the 5500 PSI pressure needed. 

1/2-Hour cylinders = 45 cubic feet (CF)
3/4-Hour cylinders = 62 CF
1-Hour cylinders = 88 CF

3. Determine the working pressure of the cylinders. If the cylin­ders have a working pressure of 4500 PSIG or 5500 PSIG, it will be necessary to offer a compressor with a 6000 PSIG working pressure. If the cylinders are low pressure, 2216 or 3000 PSIG, a compressor with 5000 PSIG working pressure can be selected.

However, I don’t recommend 5000 PSIG compressors in any case unless the customer has very limited funds to work with. Right or wrong, it seems the SCBA cylinder manufacturers are trying to entice all customers to go to 4500 PSIG working pres­sure as they can store the same or more volume in a lighter and smaller cylinder.

4. If the customer is seeking a stationary, electrically driven unit, determine the electrical service available in the installa­tion building. The most likely possibilities are as follows:

Single phase, 208/230 volts
Three phase, 230 volts
Three phase, 460 volts

Be aware that if the installation building has only single phase available, the largest compressor that can run on this current is 10 horsepower.

B. Target Volume

In order to compare the value of one compressor size over another, a baseline factor is necessary. The best way to do this is by developing a target volume that is calculated as follows: Target Volume = # of SCBA Cylinders x Volume of Cylinders

This can be calculated from the number of cylinders and their volume obtained from the customer in item #2 above.

C. Layout of the Options

Now armed with the data collected, generate a spreadsheet that will demonstrate the value of each com­pressor size in terms of speed to fill and cost. For an example of what this looks like, let’s assume the following data was obtained from the customer:

Target Volume Calculation:

Number of and Volume of Cylinders:

40) 4500 PSIG, 1/2-hour (45.0 CF) cylinders
15) 4500 PSIG, 1-hour (88 CF) cylinders (for Hazmat team)
Target Volume = 40 x 45 x 88 = 3,120 CF

Compressor CFM Time to Fill* $
14 3.7 hours $45,000.00
21 2.5 hours $51,000.00
24 2.1 hours $53,000.00

*Time to Fill = Target Volume/Compressor CFM/60

It is human nature to compare two related factors. When presented with a table as the one shown above, the natural focus is on the time versus cost columns. NOW, there can be an intelligent assessment about the value of each compressor size.

So, this begs the question once again:  what are your needs?

Increasing Firefighter Safety…..

…..through the NFPA 1981/1982 2013 standard change in the Low Air Alarm End of Service Time Indicator (EOSTI)!

The NFPA 1981 2007 standard required the alarm to sound when 25% of the cylinder’s air was available. The NFPA 1981 2013 edition will increase that requirement to 33% of the cylinder’s available air.

The NFPA 1981 2013 edition is the first time the EOSTI level has actually been set for the fire service.  The 25% number accepted for years came from a NIOSH standard that actually had a tolerance of 20% to 25%.








With the addition of the 33% threshold for reserve air, the fire service can now more closely follow the NFPA 1404 standard on Fire Service Respiratory Protection and Training which calls for:

  • The individual shall exit from an IDLH atmosphere “before” consumption of reserve air supply begins.
  • The individual shall recognize that the low air alarm notification indicates that the member is consuming the reserve air supply.

In the world of air management and firefighter safety, increasing the safety margin through additional reserve air and clear indicators of the use of reserve air is definitely a positive move!

Draeger Firefighter Personal Gas Monitoring That Fits the Fire Service

X-am 5000 Draeger Gas DetectorDraeger’s X-am 5000 provides the Fire Service the smallest ergonomic designed five (5) gas detector available.

Reliable and simple two-button operation coupled with a rugged integrated rubber protective boot, this detector provides shock proof sensors and remains functional even after falling into water.  The X-am 5000 is the perfect personal detector for the fire service.

Calibration is made simple by using either the bump/calibration test station or the new X-Dock automatic calibration station.

Draeger produces their own high performance sensors, which provide accuracy and consistency with the greatest sensor longevity on the market.  The oxygen sensor has an expected lifetime of five years.

Your Safety Is The Measure of all Things!

Gas Detectors – Here’s the Scoop!

A gas detector is a device which detects the presence of various gases within an area. It usually has an audible alarm, along with a visual signal, to warn people in the area, giving them the opportunity to exit the area. This is an important device because there are many gases that can be harmful to humans and animals.

Gas detectors can be used to detect combustible, flammable, and toxic gases, along with oxygen depletion. This type of device is used widely in industry, and in the fire service.

Gas detectors are usually battery operated. They transmit warnings via a series of audible and visible signals, such as alarms and flashing lights, when dangerous levels of gas vapors are detected.

Gas detectors come in two main types; portable and fixed. The portable unit is used to monitor the atmosphere around personnel, and is usually worn on clothing or a belt/harness. The fixed detector, is generally mounted near the process area of a plant or control room, or in an industrial environment.

Call us for more details and we can set you up with the detector that is right for you!

Delivered! The New Eagle Harrier Single Axle Air Compressors…

L.N. Curtis & sons is proud to be part of the delivery to the U.S. Navy of the new Eagle Harrier Single Axle Air Compressors!

The US Navy ordered four (4) Eagle Harriers for four Navy bases in Japan and Korea. This newly designed compressor includes a 6000 psi system, NFPA-certified, to fill up to 5500 psi bottles. The units include a command light tower, GENSET power system which greatly reduces maintenance requirements, and Air Reel for filling remote cascade systems all on a single axle. The GENSET configuration is the only mobile air compressor system offered with the capability to be used as a 27KW generator for major incidents.

The L.N. Curtis & sons team traveled to each location providing customer training and start up services. The new design exceeded the customer’s requirements and they have just ordered four (4) additional Harrier units for Navy bases in Europe.