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Super-Dry Systems

280-140: D4 - Single-tower desiccant compressed air dryer, aluminum housing, with activated alumina desiccant

280-140: D4 - Single-tower desiccant compressed air dryer, aluminum housing, with activated alumina desiccant

SKU: 280-140

122 in stock

$3,125.00 USD
$3,125.00 USD
Sale Sold out
Shipping and Tariff calculated at checkout.

Shipping & Delivery

We offer fast, reliable shipping worldwide. Orders are processed within 1-2 business days; Express shipping does not accelerate the order processing.

Professional Installation Recommended

Super-Dry products deliver reliable results when installed under proper system conditions. If you’re unsure about your setup, we recommend having a local compressed air specialist review your system before installation. Super-Dry does not provide on-site support.

Tariff Surcharge

All shipments to the United States include a 10% Tariff Surcharge. The surcharge is a temporary measure to offset part of the tariffs currently applied to our products.

DESCRIPTION

The D Series is a single tower desiccant air dryer designed for point-of-use and intermittent flow applications.   The wet compressed air enters at the inlet, is first separated due to the off-set inlet creating centrifugal separation to trap water droplets, and subsequently passes around a polypropylene coalescer element, felt pads, and stainless-steel grids to remove solid particulates.  The air flows upward through a sewed filtration desiccant bag that acts as a sponge to absorb moisture.  Finally, the air flows again through the second stage of filtration to eliminate any desiccant dust.  This 3-stage system efficiently provides separation, filtration, and drying. It is time to replace the cartridge when the Moisture Gauge indicates saturation.  The replacement is fast and mess-free, thanks to the US stainless-steel clamp.  The rust-free powder-coated aluminum housing is made in Canada and includes built-in brackets.

✅ Professional Installation Recommended

Super-Dry air dryers are factory-engineered and time-tested for dependable performance when installed under proper compressed air system conditions.

If you’re not fully familiar with compressed air best practices, we recommend contacting a local compressed air specialist or service technician who can review your setup before installation.

💡 Important: Many performance issues arise from system conditions — such as overheating compressors, excessive moisture, or incorrect piping — that no air dryer can solve alone.

Super-Dry is a manufacturer and does not offer on-site service or system troubleshooting. Ensuring proper installation will help your dryer perform as designed and provide lasting reliability.

  A superior alternative to Devilbiss DAD 500, Camair CT30, MP Filenco, Van Air Moisture Block.

SPECS

  • INLET / OUTLET PORTS: 3'' NPT
  • AIRFLOW @ 100 PSIG: 300 SCFM
  • MAXIMUM INLET PRESSURE: 150 PSI 
  • INLET TEMPERATURE: 40°F to 100°F (4°C to 38°C) 
  • CRN: CERTIFICATIONS & PRESSURE RATINGS
  • PRE-FILLED WITH DESICCANT CARTRIDGE
  • PRESSURE GAUGES, SAFETY VALVE, AND BALL VALVE INCL.
  • UNIT WEIGHT: 110 LBS
  • BOX DIMENSIONS: 35 x 13 x 12"
  • DESICCANT BAG APPROX. WEIGHT: 22 LBS
  • HS CODE: 8421.39.0115

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FAQ

1. How long does the cartridge last?
Typically, we recommend changing the cartridge at least once to twice every year (or every 2,000 hrs) when used for point-of-use applications with an intermittent flow. You can estimate the cartridge's life by using our Cartridge Life Calculator.

2. When do I know when to change the cartridge?
Use our moisture indicator HGT-1/4 and replace the cartridge when the R.H. exceeds 80%.

3. Can I regenerate the desiccant?
We highly recommend replacing the desiccant with a fresh cartridge for optimal performance.  However, you may dry the desiccant by emptying the bag and leaving the activated alumina in an oven at 275 F for 4 hours (approximately).  Let the desiccant cool down before refilling the bag.  Use a commercial stapler to close the bag.

4. How can I extend the life of the cartridge?
We recommend draining the tower daily by opening the ball valve or using our automatic timer drain TD-1/4.  When there are bulk liquids in the compressed air, a water separator FSD Series installed upstream of the dryer will knock water and prevent the flooding of the cartridge.

5. Can I oversize my air dryer?
Yes, oversizing the air dryer will increase the time in between maintenance.

6. Sizing the correct air dryer
To ensure that Super-Dry is the right fit for your application, we recommend that you take our Online Quiz to help you identify the right model for your application.

7. Can I obtain a stable -40° F Dew Point?

No.  The D series is a single tower non-renegerative air dryer.  As a result, the -40° F Dew Point can’t be maintained.  We know that some competitors advertise -40° F Dew Point, however they can’t provide any third party tests that supports their claim.  In other words, if you need a -40° F Dew Point, you need a twin tower regenerative air dryer, period.  We currently don’t manufacture these types of air dryers.

8. What Dew Point should I maintain?

Like most single-tower air dryers, the dew point will decline over time.  Once installed, some users will reach -40° F for a short period (a couple of hours).   After a few days, it will go down to -20° F to +20° F (still below the freezing point). In other words, a twin tower must be used if the customer requires a stable dew point of -40 ° F Dew Point.

D-Series compressed PDF

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Industries & case studies

Powering Industry-Specific Needs

Sand Blast

Using an air dryer in conjunction with a sandblasting setup can be beneficial to ensure optimal performance and prevent issues associated with moisture in the compressed air. Moisture in the air can lead to problems such as clogging of the abrasive media, inconsistent blasting results, and equipment's internal parts rusting. Super-Dry compressed air dryers offer a higher drying capacity than a Devilbiss DAD 500 or Devilbiss CT30.

Case Study PDF

Paint Shop

An air dryer in a paint shop is a crucial component of the compressed air system. It helps remove moisture from the compressed air to ensure that the air used for painting is dry and free from contaminants. Moisture in compressed air can lead to paint defects, fish eyes, orange peel, and costly redoes

Case Study PDF

Diesel Compressor

A diesel compressor air dryer is a system used to remove moisture and contaminants from compressed air produced by a diesel-powered air compressor. Compressed air often contains water vapor, oil, and other impurities that can negatively impact the performance and longevity of pneumatic tools and equipment. The air dryer helps improve compressed air quality by reducing its moisture content.

Case Study PDF

Manufacturing

By removing moisture and contaminants, a compressor air dryer helps prevent corrosion in pneumatic systems, ensures the proper functioning of air-operated equipment, and extends the life of tools and machinery. This is particularly important in applications where clean, dry air is critical, such as manufacturing, automotive, painting, and various industrial processes.

Case Study PDF (#1)
Case Study PDF (#2)

Nail Guns & Air Tools

An air tool air dryer, also known as a compressed air dryer, is a device used to remove moisture and contaminants from compressed air in a pneumatic system. Compressed air often contains water vapor, oil, and other impurities that can negatively impact the performance and lifespan of pneumatic tools and equipment. The air dryer helps ensure clean, dry air, which is crucial for adequately functioning air-powered tools and systems. When used in a cold environment, it will prevent nail guns from freezing.

Case Study PDF

Dust Collectors

Compressed air often contains water vapor, and when the air cools, this moisture can condense into liquid water, potentially causing issues in pneumatic systems, tools, and equipment. Air dryers help prevent this by removing the moisture content of the compressed air, which reduces the effectiveness of the dust collector or causes operational issues.

Case Study PDF

Plasma Cutting

Compressed air often contains moisture, which can negatively impact the performance of the plasma-cutting process. Moisture in the air can lead to poor cut quality, reduced consumable life, and potential damage to the plasma torch. In addition to humidity, compressed air can carry impurities such as oil, dust, and other contaminants. These impurities can clog or damage the internal components of the plasma cutter, affecting its efficiency and requiring more frequent maintenance.

Case Study PDF

Ready-Mix Concrete

Moisture in compressed air is a hidden threat in cement production. It clogs aerators, forms hard cement deposits, and disrupts material flow. Super-Dry systems eliminate moisture to keep your silos, aeration systems, and conveyors running smoothly — reducing downtime and costly cleanouts.

Case Study PDF

Medical & Pharmaceutical

In the medical and pharmaceutical industries, the quality of compressed air is directly tied to patient safety, product purity, and equipment reliability. Even the smallest trace of moisture can lead to corrosion, bacterial growth, or contamination in sensitive systems such as pneumatic controls, air-operated valves, or packaging lines.

Case Study PDF (#1)
Case Study PDF (#2)

Underground Wires

Dry compressed air is essential when installing underground electrical cables and fiber optics because any trace of moisture in the air used to blow or push wires through conduits can lead to serious issues such as freezing, corrosion, and signal loss. Moisture inside the ducts can cause cables to overheat or short-circuit over time, especially in cold climates. Using a Super-Dry air dryer ensures the air is completely moisture-free, protecting the integrity of your electrical and fiber-optic installations and ensuring long-term system reliability and performance.

Case Study PDF

Food & Beverages

In the food and beverage industry, clean and dry compressed air is critical to maintaining product quality, safety, and compliance with strict hygiene standards. Moisture in compressed air can cause bacterial growth, equipment corrosion, and contamination during packaging or processing. Super-Dry air dryers eliminate moisture at the source, ensuring reliable, contaminant-free air for mixing, conveying, bottling, and packaging applications. Protect your products, meet food-grade standards, and keep your operations running smoothly with Super-Dry — the trusted choice for moisture-free compressed air in food processing environments.

Case Study PDF (#1)
Case Study PDF (#2)

Oil & Gas

In the oil and gas industry, moisture in compressed air can lead to costly equipment failures, corrosion, and downtime in demanding field conditions. From pneumatic controls and instrumentation to drilling rigs and compressor stations, reliable dry air is essential for safety and performance. Super-Dry air dryers remove water vapor before it reaches critical components, ensuring consistent operation, preventing line freezing, and reducing maintenance costs. Built tough for harsh environments, Super-Dry systems deliver dependable, moisture-free compressed air that keeps your oil and gas operations running efficiently and safely.

Case Study PDF (#1)
Case Study PDF (#2)

Get Help Choosing Your Desiccant Air Dryer

Take our quick online quiz — it only takes a minute to find the perfect Super-Dry system for your setup. Get personalized recommendations based on your air flow, pressure, and application.

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