Industry-Verified Manufacturing Data (2026)

Deaerator

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Deaerator used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Deaerator is characterized by the integration of Spray Nozzle / Distribution Tray and Deaeration Section / Scrubbing Section. In industrial production environments, manufacturers listed on CNFX commonly emphasize Carbon Steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A device that removes dissolved gases, primarily oxygen and carbon dioxide, from boiler feedwater to prevent corrosion and improve efficiency.

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Product Specifications

Technical details and manufacturing context for Deaerator

Definition
A critical component within a Feedwater Treatment System, the deaerator functions to strip dissolved non-condensable gases (mainly oxygen and carbon dioxide) from the water before it enters the boiler. This process is essential for preventing corrosive damage to boiler tubes, steam lines, and other system components, thereby enhancing operational safety, longevity, and thermal efficiency of the steam generation system.
Working Principle
The deaerator typically operates on the principle of Henry's Law, which states that the solubility of a gas in a liquid is proportional to its partial pressure above the liquid. It combines thermal and mechanical methods: feedwater is heated by steam (thermal scrubbing) to reduce gas solubility, and the water is then sprayed or cascaded over trays/scrubbers (mechanical scrubbing) to increase surface area, allowing the liberated gases to be vented to the atmosphere.
Common Materials
Carbon Steel, Stainless Steel (for internals/corrosive zones)
Technical Parameters
  • Feedwater flow capacity, indicating the maximum volume of water the deaerator can process per hour. (m³/h) Customizable
Components / BOM
  • Spray Nozzle / Distribution Tray
    Distributes incoming cold feedwater as a fine spray or thin film to maximize surface area for heating and gas release.
    Material: Stainless Steel
  • Deaeration Section / Scrubbing Section
    The main chamber where steam contacts the water, heating it and scrubbing out dissolved gases.
    Material: Carbon Steel
  • Storage Section / Feedwater Tank
    Holds the deaerated, hot feedwater, providing a buffer volume for the boiler feed pumps.
    Material: Carbon Steel
  • Vent Condenser
    Condenses steam from the vented gas mixture to recover heat and minimize steam loss.
    Material: Stainless Steel / Carbon Steel
Engineering Reasoning
0.5-20 bar absolute pressure, 105-130°C temperature
Feedwater oxygen content exceeding 7 ppb, deaerator pressure dropping below 0.3 bar absolute
Design Rationale: Henry's Law gas solubility dependence on temperature and pressure - insufficient steam stripping at low pressure/temperature allows oxygen redissolution
Risk Mitigation (FMEA)
Trigger Steam supply pressure drop below 1.2 bar absolute
Mode: Oxygen scavenging failure leading to feedwater oxygen concentration >7 ppb
Strategy: Dual redundant steam supply with pressure-controlled bypass valves maintaining minimum 1.5 bar absolute
Trigger Venting system blockage exceeding 80% cross-sectional area reduction
Mode: Non-condensable gas accumulation causing deaerator pressure instability >±0.15 bar fluctuation
Strategy: Dual vent lines with differential pressure monitoring and automatic blowdown at 0.25 bar differential

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Deaerator.

industrial boiler feedwater deaerator carbon steel deaerator for steam systems stainless steel deaeration equipment oxygen removal from boiler water deaerator with vent condenser

Applied To / Applications

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

Feedwater Treatment System
View system integration details

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0-10 bar (standard atmospheric to low-pressure designs)
flow rate: 5-500 m³/h (typical capacity range)
temperature: 105-120°C (typical operating range for steam deaerators)
deaeration efficiency: ≤0.005 cc/L oxygen residual (standard performance)
Media Compatibility
✓ Boiler feedwater systems ✓ Steam condensate return lines ✓ Industrial process water
Unsuitable: High-chloride or acidic environments (accelerates corrosion)
Sizing Data Required
  • Maximum feedwater flow rate (m³/h)
  • Inlet water temperature (°C)
  • Required outlet oxygen concentration (cc/L)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Stress corrosion cracking
Cause: Oxygen pitting combined with cyclic thermal stresses from steam injection and water level fluctuations, exacerbated by improper chemical treatment leading to chloride concentration.
Water hammer damage
Cause: Sudden condensation of steam in piping due to improper venting, cold water ingress, or rapid valve operation causing destructive pressure surges in the deaerator and associated piping.
Maintenance Indicators
  • Audible hammering or banging noises from the vessel or feedwater piping during operation
  • Visible water leakage at shell welds or nozzle connections, especially during temperature/pressure changes
Engineering Tips
  • Maintain strict oxygen scavenger chemical treatment and continuous venting to keep dissolved oxygen below 7 ppb, preventing corrosion initiation.
  • Implement automated level controls with redundant sensors to prevent low-level conditions that expose heating elements to steam and high-level conditions that flood steam inlets.

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality Management Systems ASME BPVC Section VIII - Boiler and Pressure Vessel Code PED 2014/68/EU - Pressure Equipment Directive (CE marking)
Manufacturing Precision
  • Shell Thickness: +/- 5% of nominal thickness
  • Nozzle Alignment: +/- 1.5° from perpendicular
Quality Inspection
  • Hydrostatic Pressure Test
  • Radiographic Testing (RT) of weld joints

Factories Producing Deaerator

Verified manufacturers with capability to produce this product in China

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✓ 94% Supplier Capability Match Found

P Procurement Specialist from United Arab Emirates Feb 08, 2026
★★★★★
"Reliable performance in harsh Machinery and Equipment Manufacturing environments. No issues with the Deaerator so far."
Technical Specifications Verified
T Technical Director from Australia Feb 05, 2026
★★★★★
"Testing the Deaerator now; the technical reliability results are within 1% of the laboratory datasheet."
Technical Specifications Verified
P Project Engineer from Singapore Feb 02, 2026
★★★★★
"Impressive build quality. Especially the technical reliability is very stable during long-term operation."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

15 sourcing managers are analyzing this specification now. Last inquiry for Deaerator from USA (20m ago).

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Frequently Asked Questions

What gases does a deaerator remove from boiler feedwater?

Deaerators primarily remove dissolved oxygen and carbon dioxide from boiler feedwater, which are the main causes of corrosion in steam systems and boiler components.

What materials are used in deaerator construction?

Deaerators typically feature carbon steel construction for the main vessel with stainless steel used for internal components and areas exposed to corrosive conditions, such as the scrubbing section and distribution trays.

How does a deaerator improve boiler system efficiency?

By removing dissolved gases, deaerators prevent corrosion damage to boiler tubes and components, reduce maintenance costs, improve heat transfer efficiency, and extend the overall lifespan of the boiler system.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Specifications verified by CNFX Industrial Index (v2.6.03) for Machinery and Equipment Manufacturing sector.

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