Category: exair

The Power of Precision: Why EXAIR’s Adjustable E-Vac is a Game Changer

Published on by Al WooffittLeave a comment

When designing a vacuum system, the “one-size-fits-all” approach rarely works. EXAIR offers two primary types of single-stage vacuum generators: the In-Line E-Vac and the Adjustable E-Vac. While both use a venturi design to create instantaneous vacuum without moving parts, choosing between them depends on how much control and “forgiveness” your application requires.

The primary difference lies in versatility and internal geometry. In-Line E-Vacs are compact, cylindrical units designed for specific, unchanging tasks.

  • Variants: They come in “High Vacuum” models for non-porous materials (like glass or steel) and “Low Vacuum” models for porous materials (like cardboard).
  • Limitation: Once you choose a model, its performance is fixed.

Adjustable E-Vacs allow you to “dial in” the exact vacuum level and flow rate needed.

  • Versatility: By loosening a locknut and turning the exhaust, you can shift the unit’s performance to handle different weights or surface porosities.
  • Durability: They feature a much larger throat diameter, which allows them to pass small solids, dust, and even liquids without clogging.

The Choice: Why Go Adjustable?

The Adjustable E-Vac is the superior choice when your production line handles either variety, or potentially contains contamination. For facilities that use a robotic arm to pick and place various items from a conveyor depending on the job, you would potentially need more than one style of In-Line E-Vac. For example, if one job requires lifting heavy, non-porous plastic containers, you would need a high-vacuum, low-flow unit; whereas if the next job is handling lightweight, porous cardboard boxes, this would require a low-vaccum, high-flow unit.

By choosing the Adjustable E-Vac, you can tune for porosity: Increase the vacuum flow with a quick adjustment to overcome the “leakage” inherent in cardboard. In addition to this, if the surface is less than pristine, the larger throat diameter will have no trouble passing the dirt and debris.

If you’re ready to integrate these tools, several kits and individual units are available:

  • EXAIR Adjustable E-Vac Vacuum Generator 840008: A compact 8 SCFM model, ideal for smaller pick-and-place tasks.
  • EXAIR Adjustable E-Vac Vacuum Generator 840015: A mid-range 15 SCFM unit for higher flow requirements.
  • EXAIR E-Vac Adjustable Vacuum Generator Deluxe Kit 842030: A complete solution including the pump, an assortment of vacuum cups, tubing, a filter separator, and a pressure regulator.
  • EXAIR E-Vac Deluxe Kit 842060M: A high-capacity 62.7 SCFM kit featuring a straight-through muffler, perfect for environments with heavy particulate.

If you would like to find out more, give us a call!

Al Wooffitt
Application Engineer

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Stop Starving Your Tools: How to Beat Pressure Drop in Compressed Air Systems

Published on by Al WooffittLeave a comment

If you’ve ever noticed your pneumatic tools losing their “punch” or your machines throwing low-pressure faults, you’re likely dealing with the silent thief of industrial efficiency: pressure drop.

Pressure drop is the reduction in air pressure from the compressor discharge to the actual point of use. It’s not just a performance issue; it’s an expensive energy drain. Most facilities try to fix it by cranking up the compressor pressure, which is like trying to fix a leaky garden hose by turning the spigot up—it just wastes more energy and stresses the system.

Here is how to tackle it and how EXAIR products help you win the fight.

1. Size Matters (The Piping Dilemma)

The most common cause of pressure drop is undersized piping. Think of your compressed air system like a highway; if you try to cram 1,000 cars into one lane, traffic slows down.

  • The Fix: Always size your main headers and distribution lines for the maximum potential flow, not just your current average. Using a “loop” system instead of a single “dead-end” header allows air to flow in two directions to reach a high-demand tool, effectively doubling the capacity of the pipe.

2. Smooth Out the “Plumbing”

Every elbow, tee, and valve creates friction. Standard plumbing fittings often have sharp turns that create turbulence, slowing down the air.

  • The Fix: Minimize the use of 90-degree elbows where possible (use long-radius sweeps instead) and ensure you aren’t using restrictive, undersized quick-connect couplings at the tool.

3. Eliminate the “Spiky” Demand

Large, intermittent air consumers can cause the pressure in the entire line to “sag.”

  • The Fix: Use a receiver tank (surge tank) near the point of high demand. This acts as a local battery, providing the necessary volume instantly without pulling from the main header and causing a system-wide drop.

How EXAIR Combats Pressure Drop

EXAIR is built on the philosophy of “doing more with less.” Our products are engineered specifically to maximize force while minimizing air consumption, which is the most effective way to reduce pressure drop at the end of the line.

Engineered Super Air Nozzles

EXAIR Nozzles

Standard “open pipe” blowoffs are air hogs. They create massive localized pressure drops because they dump huge volumes of air inefficiently. EXAIR Super Air Nozzles use a small amount of compressed air to entrain large volumes of surrounding “free” room air.

  • The Result: You get high-velocity discharge with significantly lower compressed air demand, keeping the pressure stable for the rest of your tools.

Digital Flowmeters

You can’t fix what you can’t measure. EXAIR Digital Flowmeters allow you to see exactly where the air is going in real-time. By monitoring different zones of your plant, you can pinpoint exactly which branch or machine is causing the pressure drop, making it easy to identify leaks or bottlenecks.

Precise Pressure Regulators

Using more pressure than a process requires (artificial demand) is a leading cause of system-wide drops. EXAIR Pressure Regulators ensure that each application gets exactly the PSI it needs and nothing more. By lowering the pressure at the point of use to the minimum required, you preserve the “headroom” in your main lines.

The Bottom Line, combating pressure drop is about velocity and volume. By optimizing your piping layout and switching to high-efficiency end-use products like our intelligent, point-of-use compressed air products, you stop starving your tools and start saving on your electric bill.

If you’re ready to stop turning up the compressor, and start fixing the flow, give us a call!

Al Wooffitt
Application Engineer

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Step 3: Upgrade Your Blow off, Cooling, and Drying Operations

Published on by Al WooffittLeave a comment

In the world of manufacturing, compressed air is often called the “fourth utility.” It’s essential, but it’s also expensive to produce. If you’re following the Six Steps to Optimize Your Compressed Air System, Step 3 is where you stop the bleeding.

Step 3, dear reader, is the subject of today’s blog.

Upgrading your blow-off, cooling, and drying operations from “homegrown” solutions to engineered products is one of the fastest ways to slash energy costs and improve plant safety.

The Problem with “In-House” Solutions

Many plants rely on makeshift blow-off devices: crimped copper tubes, pipes with drilled holes, or basic air nozzles found at a hardware store. While they seem “free” or cheap, they are incredibly inefficient.

  • High Air Consumption: They lack the physics to move air efficiently, requiring massive volumes of compressed air to do the job.
  • Dangerous Noise Levels: Drilled pipes produce a high-pitched shear that often exceeds OSHA noise exposure limits.
  • Safety Hazards: If a pipe or open tube is dead-ended against skin, it can lead to serious injury or air embolism.

The Engineered Solution: EXAIR Technology

This is where EXAIR engineered compressed air products change the game. Unlike a standard pipe, EXAIR products use the Coanda effect to “entrain” the surrounding room air. For every part of compressed air used, an EXAIR nozzle or air knife pulls in 30 to 40 parts of “free” ambient air.

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.

If you are drying a conveyor belt or cleaning wide sheets of material, a drilled pipe is a money pit. An EXAIR Super Air Knife provides a high-velocity, uniform sheet of air across the entire surface. It’s quiet (around 69 dBA for most applications) and reduces air consumption by up to 80% compared to open headers.

For targeted blow-off or part ejection, Super Air Nozzles replace open tubes and cheap nozzles. They provide a forceful, concentrated stream of air while meeting OSHA requirements for skin pressure and noise. You get more “push” for significantly less “psi.”

Step 3 isn’t just about blowing air; it’s about optimizing how air manages temperature and waste. From Vortex Tubes that provide spot cooling without refrigerants to Air Amplifiers for smoke and fume removal, these tools ensure you aren’t overworking your compressors for simple tasks.

The Bottom Line

Upgrading to EXAIR engineered products isn’t just a maintenance fix; it’s a financial strategy. Most facilities see a return on investment (ROI) in just weeks through reduced energy bills.

By replacing inefficient, loud, and dangerous blow-off methods with engineered solutions, you’re not just optimizing your compressed air—you’re creating a quieter, safer, and more profitable shop floor.

Al Wooffitt
Application Engineer

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What’s So Great About EXAIR’s CAD Library?

Published on by Russ BowmanLeave a comment

I was first introduced to CAD drawings when I was in the Navy. Right out of Nuclear Power School, I reported to a new construction Trident submarine. My first job was taking paper P&ID’s (Piping & Instrumentation Diagrams) to the Engineering room to verify that the valves, flanges, welds, pressure gauges, thermometers, etc. of various reactor and steam plant piping systems were in the right place, correctly labeled or marked, and visually free of defects. They’ve come a LONG way, technologically, since then:

When I left the Navy, I included some vague verbiage about CAD expertise on my resume. That actually got me a pretty cool job with an industrial pump company...making to-scale drawings of pump and drive assemblies, usually mounted on steel baseplates, that showed distances from the pump’s fluid ports to the baseplate mounting holes, so the millwrights & pipe fitters could work together to prepare for installation.

The absolute number one most important resource I had at my disposal was the ability to get to-scale CAD files (.dxf or .dwg) from pump, motor, gearbox, coupling, etc., manufacturers. The first rule of CAD is “never draw anything twice” and I rarely had to draw anything, except for items that we were fabricating ourselves. I had to call some manufacturers; others I could email; some would mail out a 3.5″ floppy disk (I know I’m dating myself with that one) or a CD (before THEY went obsolete) with everything they made on it…and some had drawing files you could download straight from their website. Just like EXAIR does.

Almost all the drawings I made back in the late 20th Century were 2D (front and side views), but nowadays, almost everyone uses solid modeling software (or apps) for drawings. This has the distinct advantage of being able to see the assembly from any angle, so you can tell right away if there’s going to be physical interference between two parts in close proximity to each other. While you can download models in a number of formats from the EXAIR website, .stp files are common to most modeling apps, so they’re the ones that get downloaded most.

If you have questions about EXAIR products — how they work, what they’re made of, which one is best for your application – give me a call. And if you need a drawing, I can help with that too.

Russ Bowman, CCASS

Application Engineer
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