Editorial Technical Reference

Air Dryer

This page explains how Air Dryer is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A component that removes moisture from compressed air to prevent contamination and equipment damage in sterile air systems.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Air Dryer

Definition
An essential component within Sterile Air Generation Systems that removes water vapor and moisture from compressed air streams through refrigeration, desiccant, or membrane technologies, ensuring the air meets stringent dryness requirements for sterile applications in pharmaceutical, food processing, and medical environments. The dryer operates by cooling the compressed air below its dew point, causing moisture to condense and separate, followed by reheating to prevent downstream condensation. In desiccant types, hygroscopic materials like silica gel or activated alumina adsorb moisture. Constructed from materials such as Stainless Steel 316L and Aluminum, the dryer is designed for durability and compatibility with clean environments. Key parameters include a rated air flow of 0.5–10 m³/min (ISO 1217), operating pressure of 1.0–1.6 MPa, pressure dew point of -40 to -70 °C (ISO 8573-1), operating temperature of 1–50 °C, and a maximum inlet temperature of 65 °C. Power supply is 220–240 V AC (50/60 Hz, IEC 60038), with power consumption ranging from 0.5–3.0 kW. Filtration rating is 0.01–1 μm (ISO 8573-1), oil content is 0.01–0.1 mg/m³ (ISO 8573-1), and pressure drop is 0.02–0.1 MPa. Noise level is 60–75 dB(A) at 1 m (ISO 3744). Weight ranges from 50–500 kg, and dimensions vary from 600×400×800 mm to 2000×1200×1800 mm. These values are reference ranges and must be confirmed for the specific model and application. The dryer is selected based on compressor output, required dew point, and environmental conditions. It is crucial to verify model-specific values and standards with the legal manufacturer or supplier before procurement or installation.
Working Principle
Compressed air enters the dryer where it is cooled below its dew point, causing moisture to condense and separate from the air stream. The dried air is then reheated to prevent condensation in downstream piping. In desiccant dryers, moisture is adsorbed by hygroscopic materials like silica gel or activated alumina.
Common Materials
Stainless Steel 316L, Aluminum, Desiccant Media
Technical Parameters
ParameterTypical rangeNotes & selection driver
Rated Air Flow0.5–10 m³/minSelect based on compressor outputISO 1217
Operating Pressure1.0–1.6 MPa
Pressure Dew Point-40–-70 °CClass 1–2 for sterile airISO 8573-1
Operating Temperature1–50 °CAbove 50°C desiccant degrades
Max Inlet Temperature65 °CHigher requires pre-cooler
Power Supply220–240 V AC50/60 HzIEC 60038
Power Consumption0.5–3.0 kWDepends on dryer type
Filtration Rating0.01–1 μmFor particulate removalISO 8573-1
Oil Content0.01–0.1 mg/m³Class 1–2ISO 8573-1
Pressure Drop0.02–0.1 MPaHigher reduces efficiency
Noise Level60–75 dB(A)At 1 m distanceISO 3744
Weight50–500 kgDepends on capacity
Dimensions (L×W×H)600×400×800–2000×1200×1800 mmVaries with model

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Dryer Body
    The dryer body itself: contains the heated volume and the material passing through it.
  • Heat Exchanger
    Cools incoming air and reheats dried air
    Material: Stainless Steel
  • Moisture Separator
    Removes condensed water from air stream
    Material: Stainless Steel
  • Desiccant Bed
    Adsorbs moisture in desiccant-type dryers
    Material: Silica Gel/Activated Alumina
  • Drain Valve
    Automatically removes collected condensate
    Material: Brass/Stainless Steel

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 150 psig (10.3 bar) standard, up to 300 psig (20.7 bar) high-pressure models
dew point: -40°F to +50°F (-40°C to +10°C) pressure dew point range
flow rate: 5 to 5000 SCFM (8.5 to 8500 Nm³/h) depending on model
temperature: 40°F to 120°F (4°C to 49°C) operating, -40°F to 150°F (-40°C to 66°C) storage
Media Compatibility
✓ Compressed air for pharmaceutical manufacturing ✓ Instrument air in food processing plants ✓ Process air in electronics cleanrooms
Unsuitable: Oil-saturated compressed air without proper prefiltration
Sizing Data Required
  • Maximum compressed air flow rate (SCFM or Nm³/h)
  • Required pressure dew point (°F or °C)
  • Inlet air temperature and pressure conditions

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Desiccant degradation
Cause: Moisture breakthrough due to thermal aging, oil contamination from upstream compressors, or exceeding adsorption capacity limits
Regeneration system failure
Cause: Heater burnout from voltage spikes or sediment buildup, purge valve malfunction due to solenoid failure or dirt accumulation
Maintenance Indicators
  • Visible moisture or oil droplets in downstream air lines or receiver drain
  • Abnormally high pressure drop across dryer (>15 psi differential) or continuous regeneration cycling
Engineering Tips
  • Install and maintain proper prefiltration (coalescing + particulate filters) upstream to protect desiccant from oil and particulate contamination
  • Implement predictive maintenance with dew point monitoring and trend analysis to schedule desiccant replacement before moisture breakthrough occurs

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 8573-1:2010 (Compressed air quality classes) ANSI/ASHRAE Standard 52.2-2017 (Air-cleaning device efficiency) CE Marking (EU Directive 2006/42/EC for machinery safety)

Quoted from the published standard.

Manufacturing Precision
  • Pressure drop: +/- 5% of rated value at specified flow
  • Dew point accuracy: +/- 3°C across operating range
Quality Inspection
  • Leak test (pressure decay method per ISO 8573-2)
  • Dew point verification (chilled mirror hygrometer calibration)

Manufacturers of Air Dryer

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Zhejiang FONHO Automotive Co., Ltd.
Taizhou, Zhejiang, CN
Founded 2009200+ staff17,000 m²
IATF 16949:2016
Managed by the manufacturer
Stated by the company

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
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Manufacturing capability
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Inspection readiness
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Frequently Asked Questions

What is the function of an air dryer in a sterile air system?

It removes moisture from compressed air to prevent contamination and equipment damage, ensuring the air meets dryness requirements for sterile applications.

What are the typical operating pressure and dew point ranges?

Operating pressure is typically 1.0–1.6 MPa, and pressure dew point is -40 to -70 °C (ISO 8573-1), depending on the model.

What materials are commonly used in construction?

Common materials include Stainless Steel 316L, Aluminum, and desiccant media such as silica gel or activated alumina.

How should I select the right air dryer?

Selection should be based on compressor output (rated air flow), required dew point, operating conditions, and standards. Always verify model-specific values with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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