Pressurised Deaerators Market Outlook: Boiler Water Treatment, Corrosion Control, and Industrial Steam System Reliability Trends (2026-2032)
Global Leading Market Research Publisher QYResearch announces the release of its latest report “Pressurised Deaerators – Global Market Share and Ranking, Overall Sales and Demand Forecast 2026-2032″. This comprehensive study addresses a critical industrial imperative: preventing corrosion in steam and hot water systems that undermines reliability, increases energy consumption, and shortens equipment lifespan. For facility operators, energy service companies, and industrial plant managers, the core challenge lies in removing dissolved oxygen and free CO₂ from boiler feedwater to prevent pitting corrosion, stress corrosion cracking, and heat transfer degradation that lead to unplanned downtime, frequent maintenance, and premature equipment replacement. Pressurised deaerators provide the essential solution, operating under controlled pressure (0.2–0.6 MPa) to achieve deoxygenation rates of ≤0.02–0.03 mg/L—far exceeding atmospheric equipment capabilities—through optimized steam-water contact and thermal balance. By analyzing historical market dynamics from 2021-2025 and forecasting through 2032, this report delivers actionable intelligence on market size, share, industry development status, and the technological shifts reshaping boiler water treatment strategies.
The global market for Pressurised Deaerators was estimated to be worth US$ 672 million in 2025 and is projected to reach US$ 1,031 million, growing at a CAGR of 6.4% from 2026 to 2032. This steady growth trajectory is driven by global boiler system upgrades toward higher efficiency and longer lifespan, decarbonization policies accelerating deaeration process transformation, and increasing demand for high-quality steam from food processing, pharmaceutical, and chemical industries. Pressurized deaerators can achieve deoxygenation rates far exceeding those of atmospheric pressure equipment under a stable pressure of 0.2–0.3 MPa, fundamentally solving the most critical corrosion problem in industrial steam and hot water systems: boiler heating surfaces, steam pipe networks, heat exchangers, and condensate recovery systems suffer from pitting corrosion, stress corrosion cracking, and heat transfer attenuation due to dissolved oxygen and free CO₂. This leads to long-term risks for enterprises, including increased energy consumption, more frequent maintenance, shortened boiler lifespan, premature scrapping of heat exchangers, and unplanned downtime. In scenarios with extremely high requirements for continuity and water quality, such as food processing, pharmaceuticals, district heating stations, and hospital energy centers, this corrosion problem often directly translates into production interruptions, product quality fluctuations, and uncontrolled energy costs. Therefore, the core reason for the market’s choice of pressurized deaerators is their ability to achieve a 20-40% increase in deoxygenation efficiency, lower steam consumption, significantly reduced system corrosion, and a 2-3 times extension of boiler and pipeline lifespan through higher temperatures, more efficient steam-water contact, and more stable thermal balance. This enables energy stations to achieve higher reliability, lower total life-cycle costs, and more controllable operational risks, making them an irreplaceable core water supply equipment in the current trend toward large-scale, continuous, and clean energy systems.
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Industry Segmentation & Technology Overview
Understanding industry segmentation is essential for stakeholders navigating this specialized market. The market is categorized by deaeration structure into Spray Style and Tray Style. Spray-style deaerators dominate applications requiring rapid oxygen removal and compact footprints, utilizing spray nozzles to create fine water droplets that maximize steam contact. Tray-style deaerators—employing multi-stage tray structures for extended steam-water contact—are preferred in applications where minimal pressure drop and maximum deoxygenation efficiency are critical. In 2024, the global installed capacity of new pressurized deaerators was approximately 42,000–55,000 units, with a unit price of US$ 13,600 and a gross profit margin of approximately 18%–29%.
A pressurized deaerator is a core boiler water treatment device that operates under controlled pressure (typically 0.2–0.6 MPa) and reduces dissolved oxygen (DO) and free CO₂ in feedwater to ≤0.02–0.03 mg/L through steam heating and a two-stage spray-tray structure. The main body consists of spray heads, a water distribution tray, a pressure vessel cylinder, a steam distributor, a condensate vent valve, a pressurized section safety valve, level and pressure gauges, a collection tank, and a makeup water control system. Typical parameters include: deaerated water temperature 104–160°C (matching operating pressure), operating pressure 0.2–0.6 MPa, steam consumption per ton of water 2.8–4.2%, influent DO 2–6 mg/L, effluent DO ≤0.02 mg/L, and materials primarily composed of corrosion-resistant steels such as SA-516 Gr.70 and SS304/316L, with welds subjected to RT/UT inspection.
Value Chain, Key Players, and Applications
Upstream components include boiler vessel steel plates (Q345R/SA-516 Gr.70), stainless steel nozzle/tray materials, steam control valves and pressure reducing valve assemblies, temperature and pressure sensors and electrical control systems, water collection tanks, and support structures. Raw material costs account for 52%–63% of total unit cost. Key suppliers include Voestalpine, Sandvik, Emerson, KITZ, and Honeywell.
The competitive landscape features specialized deaerator manufacturers with strong regional presence. Key players shaping the pressurised deaerator market include:
MINGAZZINI, Spirax Sarco, EUROWATER, Tomlinson, Industrial Steam, Lockwood, Sellers, Cleaver-Brooks, Babcock Wanson, VALSTEAM, Cochran, Atlantic Feedwater Systems, PC McKenzie, and Shipco.
Spirax Sarco maintains high penetration in large-scale boiler rooms and food factory energy systems across Europe; EUROWATER leads in industrial water treatment and deaeration packaged stations; Tomlinson holds a leading position in medium-to-high tonnage boiler bids in Australia and Southeast Asia. A 2024 example: Spirax Sarco delivered two 45 t/h pressurized deaerator systems (0.35 MPa class) for a district heating company’s boiler room renovation in Denmark.
Downstream applications primarily include district heating station boiler rooms, hospital and food factory steam boiler systems, chemical fiber and textile pretreatment steam stations, papermaking steam systems, pharmaceutical and laboratory steam equipment, commercial complex energy centers, industrial process steam (cleaning, sterilization, heat exchange), centralized steam supply stations, and complete replacement projects for old boiler rooms. Typical clients include ENGIE, Veolia, Nestlé, Sodexo Energy, and Johnson Controls.
Exclusive Insights & Future Trajectory
Technological evolution focuses on three aspects: First, upgrading to high-efficiency deoxygenation structures, with spray-tray composite towers evolving toward multi-stage steam scavenging and micro-orifice injection structures, reducing DO to ≤0.01 mg/L. Second, intelligent monitoring, with liquid level, pressure, makeup water temperature, and steam flow integrated into boiler room BMS/SCADA systems, enabling adaptive steam consumption adjustment, exhaust volume optimization, and energy consumption prediction. Third, material and corrosion protection upgrades, transitioning from carbon steel with epoxy lining to all-stainless steel 316L and duplex steel to extend service life to 25–30 years. Accompanying technologies include low-steam-consumption ejectors, negative pressure scavenging valves, low-noise exhaust condensers, and modular skid designs. The overall trend points to a product system with lower DO, lower steam consumption, intelligent operation and maintenance, high corrosion resistance, and modular integration.
A compelling user case illustrates the technology’s impact. A regional energy station in Denmark recently upgraded from atmospheric to pressurized deaerators across a 90 t/h steam system. The new systems achieved effluent DO below 0.015 mg/L, reduced steam consumption by 18%, and extended boiler tube inspection intervals from 12 to 36 months—demonstrating the total life-cycle cost advantages of pressurized technology.
From an original research perspective, a critical industry nuance lies in the divergence between district heating applications and industrial process steam applications. District heating stations prioritize continuous operation at varying loads, requiring deaerators with wide turndown ratios and stable performance across seasonal demand fluctuations. Industrial process applications—particularly in food, pharmaceutical, and chemical sectors—emphasize absolute water quality (DO ≤0.01 mg/L) and compliance with regulatory standards (e.g., FDA, EMA, ASME), often specifying all-stainless steel construction and validated control systems.
Market influencing factors include global boiler system upgrades toward higher efficiency and longer lifespan; the replacement cycle of boiler rooms in Europe and North America coinciding with decarbonization policies; increased demand for high-quality steam from food processing, chemical fiber, and pharmaceutical industries; and pipe corrosion failures from aging deaerators driving replacement demand. Manufacturers who can offer integrated solutions combining spray-tray composite structures, intelligent controls, and modular skid designs will capture the next wave of market growth in the evolving boiler water treatment landscape.
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