Hazardous Location Cabinet Cooler Systems “Make Things Better”

In a previous arc in my career path, I worked on, and then built, and then sold industrial pumps, so I’ve been in my fair share of chemical plants. Did you ever wonder what all these places make? A decent number of them make what are called “intermediates”. These are compounds, solutions, & substances that aren’t found in stores, but go into almost all of the goods that ARE found in stores. One such company used to make commercials that explained it nicely:

I recently had the pleasure of assisting a caller from a company like this, who wanted to install three of our Hazardous Location Cabinet Cooler Systems in their facility. This particular company doesn’t make anything shown in the commercial above; they make intermediates for agricultural use (to paraphrase the commercial, “they don’t make fertilizer; they make fertilizer better”). As is the case in MANY chemical plants, a good portion of their real estate is classified as hazardous area (as defined by regulatory oversight agencies) AND subject to exposure to some fairly corrosive chemicals. Now, these places all go to great lengths to ensure safety for personnel AND equipment, through compliance AND design. So, when they needed to add durable & reliable heat protection to their electrical panels, they called EXAIR.

This was a pretty easy application, as the engineer I spoke to had gotten the internal heat loads from the equipment supplier, and already knew that 316SS construction was needed for the corrosive elements the equipment could be exposed to. The panel was in a Class I Div 2 area (flammable gasses or vapors may be present in the event of an accident or during unusual operating conditions). After calculating the external heat load, we specified a Model HZ4725SS-316 NEMA 4X (316SS Construction) Hazardous Location Cabinet Cooler System, rated for 1,700 Btu/hr, and Model 902021 24VDC HazLoc Solenoid Valve. These panels came equipped with temperature monitors that they could wire our valves into, otherwise we’d have supplied Thermostat Controlled systems.

EXAIR HazLoc Cabinet Cooler Systems are rated for Class I Div 1 & 2, Class II Div 1 & 2, and Class III environments.

EXAIR Cabinet Cooler Systems are available, from stock, to suit most any electric/electronic panel heat protection need:

  • Cooling capacities from 275 to 5,600 Btu/hr. Call me if your heat load is outside this range…we can look at customized solutions too.
  • NEMA 12 (IP54), 4, or 4X (IP66) ratings.
  • Thermostat Control – Standard, or Electronic Temperature Control.
  • Non-Hazardous Purge for contaminant exclusion on less-than-ideally sealed enclosures.
  • High Temperature models for ambient temperatures from 125°F (52°C) to 200°F (93°C).
  • Side Mount Kits when space is limited above the panel.
  • 316SS construction for particularly aggressive environments.
  • UL Classified for hazardous locations, just like the one I wrote about above.

If you’d like to find out how easy it is to provide durable and reliable heat protection for your electrical panels, give me a call.

Russ Bowman, CCASS

Application Engineer
EXAIR Corporation
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What’s So Great About Threaded Line Vac Pneumatic Conveyors?

Conveyor systems come in many shapes, sizes, and configurations. They can be run at different speeds, and are made of various materials, depending what they’re carrying, and why they’re carrying it. And sometimes, they’re hilarious:

If you’re looking to move solids, in bulk, through pipe, there’s not a simpler way to do it than with an EXAIR Threaded Line Vac.  Like our ‘standard’ Line Vacs, they use compressed air to generate a powerful vacuum flow to get air behind the pieces and carry them along:

Instant conveyor – just add compressed air.

But, while the ‘standard’ Line Vacs are made for use with Conveyance Hose, the Threaded Line Vacs have male NPT threads so you can pipe them in line.  We have a range of options, depending on the nature of your applications:

  • Sizes: 3/8 NPT to 3 NPT.
  • Materials: aluminum, 303SS, 316SS, and hardened alloy.
  • Performance: aluminum, 303SS and 316SS Threaded Line Vacs are made for standard duty; the hardened alloy Heavy Duty Threaded Line Vacs offer higher vacuum performance as well as superior abrasion resistance.
  • Environment: the materials of construction listed above may be important because of the nature of the product being conveyed, but they also have different temperature ratings.  Our Stainless Steel Line Vacs also come in a High Temperature design, in case the material – or the environment – is particularly hot:
    • Aluminum: 275°F (135°C)
    • Heavy Duty Hardened Alloy: 400°F (204°C)
    • 303 or 316SS: 400°F (204°C)
    • High Temp 303 or 316SS: 900°F (482°C)

If you’ve got a conveyor application you’d like to discuss, give me a call.

Russ Bowman
Application Engineer
EXAIR Corporation
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Super Air Knives Are Ideal For Super Aggressive Environments

Hydrochloric Acid. Sodium Hydroxide. Nitric Acid. Hydrogen Peroxide. Whether you know it or not, these are all commonly used around the house as tile/grout cleaners, drain openers, lawn fertilizers, and disinfectant for cut & scrapes, respectively.

They’re also used in a variety of industrial applications, such as the making of plastics, glass, pharmaceuticals, and wastewater treatment, respectively…all of which also have applications for which EXAIR Corporation’s Intelligent Compressed Air Products provide safe, efficient, and quiet solutions for.

Stainless Steel Super Air Knife Kits include the Air Knife itself, a Shim Set, an Automatic Drain Filter Separator, and a Pressure Regulator. The Air Knife & Shim Set are all Stainless Steel (grade 303 or 316, depending on which is specified) construction.

Consider the Super Air Knife: If you need one that’ll stand up to contact with hydrochloric acid, you’re looking for PVDF construction. Nitric acid is a different story – our 303SS, 316SS construction Super Air Knives are well suited for those applications.

On the other end of the (pH) spectrum, any of those materials are suitable for exposure to Sodium Hydroxide. PVDF is still the best choice, as the Stainless Steels will be subject to discoloration or slight corrosion, depending on the concentration.

PVDF Super Air Knife Kits include the Air Knife itself (PVDF body, Hastelloy C-276 hardware, and PTFE Shims,) a PTFE Shim Set, an Automatic Drain Filter Separator, and Pressure Regulator.

Acids and bases aside, oxidizers are also very corrosive, especially in higher concentrations.  Hydrogen peroxide is a commonly used oxidizer in industries as diverse as pulp & paper, soap & detergent, and water sterilization.  Like other chemicals, compatibility depends on the concentration, but like nitric acid & sodium hydroxide, our PVDF Super Air Knives are still the best, but the Stainless Steel models are still acceptable.

These are just a few, very basic, examples of chemical compatibility.  If you have an application that calls for installing one of our compressed air products in an area where you’re concerned about corrosion, give me a call.

Russ Bowman
Application Engineer
EXAIR Corporation
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Sanitary Flange Air Conveyors in Type 316SS

EXAIR currently offers a multitude of configurations when it comes to the Line Vac – air operated conveyors product line.  One of the easiest to install and best suited for food, pharmaceutical, chemical or other sanitary environments is the Sanitary Flange Line Vac¯.

Model 161200-316 – 316 Stainless Steel Sanitary Flange Line Vac

These are offered in four standard pipe sizes, 1-1/2″, 2″, 2-1/2″ and 3″.  The models are only available from stock in 316 stainless steel.   The sanitary flange is designed to be compatible with ISO 2852.  These can easily be used with a “Tri-Clover” clamp and gaskets of varying materials to fit your needs.  They have no internal moving parts and offer a compact, high throughput, quiet conveyance for parts, gases or ingredients.

EXAIR’s Sanitary Flange Line Vacs are offered from stock in four sizes.

Easily install into existing pipe runs for improved process performance.

With the sanitary flange design installation or removal are simplified in order to remove the unit for cleaning or reversing.  If you would like to discuss just how easy these are to upgrade your existing system or to install into a new system, please contact an Application Engineer.

Brian Farno
Application Engineer
BrianFarno@EXAIR.com
@EXAIR_BF