Spiral Deaerator

Water treatment technology represents one of the latest advancements in the global water industry and boasts broad a pplication prospects. It enables precise filtration and deaeration, features outstanding high-flow performance, is environmentally friendly, energy-saving and water-conserving, adapts to a wide range of water quality conditions, is easy to install and manage, and incurs low operating costs. Thanks to these prominent advantages, it is now widely used for water treatment  in industrial and civil cooling water systems, air conditioning, heat exchangers, condensers, water heaters, boilers, and other systems. To achieve the intended performance, proper operation and use are undoubtedly essential to ensuring product quality. 

This single device functions to remove air bubbles and impurities from water systems. Through this integrated operation, all air bubbles and even the finest solid particles are permanently eliminated, keeping the system free from disruptions  caused by air and debris. Unlike conventional filters and dirt separators, it requires minimal maintenance. Whether the unit  performs effectively in heating systems depends on various factors. Our technical experts will provide you with the optimal solution tailored to actual operating conditions. 

The main body of the spiral air & dirt separator is generally made of Q235B carbon steel. Its pressure rating is usually  1.0MPa, 1.6MPa, 2.0MPa, 2.5MPa, etc. Different pressure ratings can be selected according to customer requirements. The corresponding thickness and dimensions of the equipment can be confirmed with the technical department, and  shall be subject to the final drawings.

Application Conditions

1)、System Water Quality:pH > 6.5, total hardness < 700 mg/L (CaC03), total hardness + total alkalinity < 800 mg/L(CaC03），Water and non-hazardous ethylene glycol solution, not classified as dangerous goods.

2)、Water temperature: < 120 °C (water temperature flowing through the water processor)

3)、Working pressure: ≤1.6 MPa 

4)、Concentration ratio < 3.5 (for circulating cooling water systems) 

5)、Environmental Conditions:Temperature: -40℃ to 55℃ Humidity: < 90% (below 20℃)

Outline Structure Drawing

1.The automatic air vent ensures no leakage and will not close. An exhaust pipe can be connected via thread as an option. 

2. The lifting lug design allows for convenient and easy installation. 

3. The unique air chamber design prevents impurities from entering the automatic air vent. 

4. This valve can release a large amount of air generated during system filling and remove scum. 

5. A variety of connection diameters are available; conventional sizes up to 300mm, with welded or flanged  connections. 

6. The removal of dirt particles does not affect the liquid flow rate. 

7. The equipment features a sturdy shell and long service life.

8. The proprietary spiral tube is its core component, which can remove the tiniest micro-bubbles and particles in  water with very low flow resistance.

9. The large-capacity dirt chamber reduces frequent blowdown. 

10. The blowdown valve is used for discharging contaminants.

Equipment Parameters

Remarks: For more model options and equipment parameters, please contact our technical team.

Features of Spiral Dirt Separator

• Removes air bubbles and pockets from the circulation system

• Greatly reduces commissioning time after initial system filling, with no need for additional air vents

• Removes dirt while the system is in operation

• Lowest pressure drop ratio among similar products

• Avoids unnecessary system shutdowns

• Widely applicable for various pressures, temperatures and materials

• Three-year quality guarantee
  

Heating system                                                                                             Refrigeration system

Drawings and Selection of Spiral Air & Dirt Separator

Gas present in system circulation can cause numerous problems: noise, cavitation, low system operating efficiency,  insufficient heating and cooling indoors, accelerated equipment wear, and occupant complaints. You have to spend a great deal of money and time maintaining the system, only to receive doubt and dissatisfaction from users.

ECH Spiral Air and Dirt Separator

Product Features:

• By purifying the water in the system, the system can  be protected to the greatest extent.

• Improves the operating efficiency of the system. 

• Reduces the risk of system failure. 

•  Extends the service life of equipment. 

•  Prevents oxygen corrosion and pump cavitation. 

•  Operates smoothly with low noise and low pressure  drop. 

• Allows blowdown while the system is in operation.

• 1-inch brass pressure relief valve

• Particle separation capacity down to 5 micrometers (μm)

• shall operate automatically and be suitable for use in hot and cold water systems  with a maximum nominal diameter of DN40.

Its construction shall include a bronze body containing a float made of synthetic  material, which is connected via a lever to a stainless steel needle valve. 

Connection to the piping shall be threaded. 

For larger nominal diameter separators, the body shall be made of steel, with an  upper chamber containing a synthetic float connected via a lever to a stainless steel  needle valve. 

The body shall incorporate a set of internal screens to create non-turbulent zones in  the water, allowing microbubbles to rise to the top chamber

The sealing element at the flange connection is made of EPDM material

Internal components: 304 stainless steel; 

Air vent valve: brass

The Spiral Deaerator is a versatile water treatment device, widely used in industrial, commercial, and domestic scenarios that require efficient degassing, impurity filtration, and high-flow water treatment. Its main application fields include:

• Industrial Water Systems: Industrial cooling water systems, boiler feed water systems, heat exchangers, and condensers—preventing air accumulation and scaling, ensuring stable equipment operation and improving heat exchange efficiency.

• HVAC Systems: Central air conditioning water systems (cooling and chilled water), reducing commissioning time, eliminating air pockets, and optimizing air conditioning system performance.

• Domestic Water Systems: Domestic water heaters, household boiler systems, and residential water supply systems—removing air bubbles and impurities to improve water quality and extend equipment service life.

• Commercial Buildings: Shopping malls, hotels, office buildings, and hospitals—applied to their water circulation systems to ensure stable operation and reduce maintenance costs.

• Other Fields: Pharmaceutical plants, food & beverage processing facilities, and water treatment plants—meeting high-standard water treatment requirements for degassing and filtration.

Usage Methods

• Installation: Install the spiral deaerator in the water system pipeline, ensuring the inlet and outlet directions are consistent with the water flow direction. The device should be installed in a well-ventilated, dry, and stable location, with enough space around it for maintenance. Ensure all pipeline connections are tight to avoid water leakage.

• Pre-Operation Check: Before starting, confirm that the water quality, temperature, and pressure meet the device’s technical requirements (pH > 6.5, water temperature < 90°C, working pressure < 1.0 MPa or customized pressure). Check the device for physical damage and ensure the internal components are intact.

• Start-Up Operation: Turn on the water supply valve and start the system. The spiral deaerator will automatically perform degassing and filtration functions. During operation, monitor the water flow and pressure to ensure stable performance.

• Daily Monitoring: Regularly check the operating status of the device, including pressure drop, water flow, and degassing effect. Observe the discharge of air bubbles and impurities to ensure the device is working normally.

• Maintenance: Minimal maintenance is required. Clean the filter component every 3–6 months (or according to impurity content) to remove accumulated debris and ensure filtration efficiency. Check the device’s sealing parts for leakage and replace them if necessary. For customized high-pressure models, inspect the pressure-bearing components regularly to ensure safety.

Safety Precautions

• Pressure Safety: Ensure the device operates within the rated working pressure (standard < 1.0 MPa; customized < 2.5 MPa). Do not exceed the rated pressure, as this may damage the device and cause water leakage. Before maintenance, close the inlet and outlet valves and release the internal pressure to avoid injury.

• Temperature Safety: Do not allow the water temperature flowing through the device to exceed 90°C, as this may affect the degassing and filtration effect and damage the device’s internal components.

• Water Quality Safety: Ensure the inlet water quality meets the requirements (pH > 6.5, total hardness < 700 mg/L, total hardness + total alkalinity < 800 mg/L). If the water quality exceeds the standard, pre-treat the water first to avoid device blockage or performance degradation.

• Mechanical Safety: Do not disassemble the device during operation. Use appropriate tools for installation and maintenance to avoid damaging the pipeline or device components. Wear protective gloves when cleaning the filter component to avoid scratches.

• Operating Environment: Install the device in an environment that meets the ambient conditions (temperature -40°C to 55°C, relative humidity < 90% at 20°C or below). Avoid installing it in areas with high humidity, corrosive gases, or direct sunlight to prevent device damage.

• Unauthorized Disassembly: Do not disassemble the device’s internal components without authorization. If there is a fault (e.g., abnormal pressure drop, poor degassing effect), stop the device and contact professional after-sales personnel for maintenance.

FAQ

• What are the applications of the Spiral Deaerator?

The spiral deaerator combines precise filtration with efficient degassing capabilities while maintaining high flow rates. It operates without environmental pollution, saves energy and water, and is suitable for a wide range of water qualities. Easy to install and manage with low operating costs, it is widely used in water treatment systems for industrial and domestic cooling water, air conditioning, heat exchangers, condensers, water heaters, boilers, and other applications. It is also applicable to pharmaceutical plants, food & beverage processing facilities, and commercial building water systems.

• Can we customize the equipment?

Yes, we offer comprehensive OEM/ODM customization services to meet your specific application needs. Customizable items include working pressure (we can provide special designs for pressures < 2.5 MPa), flow rate, device size, and compatibility with specific pipeline materials. Our technical team will communicate with you in detail to understand your water system parameters and requirements, providing a personalized solution that perfectly matches your scenario.

• Is your company a trading company or a manufacturer?

We are a professional manufacturer integrating R&D, manufacturing, and sales. We have our own production workshop, advanced production equipment, and a strict quality control system to ensure the reliability and performance of each spiral deaerator. We offer factory-direct prices, professional technical support, and one-stop after-sales service (including installation guidance, maintenance, and spare parts supply) to ensure your product experience and system stable operation.

• How often does the spiral deaerator need to be maintained?

The spiral deaerator requires minimal maintenance compared to traditional filters and separators. Under normal working conditions, we recommend cleaning the filter component every 3–6 months (or more frequently if the water contains high levels of impurities) to remove accumulated debris. Additionally, check the sealing parts and pressure-bearing components regularly (every 6–12 months) to ensure safe and stable operation.

• What is the difference between a spiral deaerator and traditional deaeration equipment?

Unlike traditional deaeration equipment, the spiral deaerator integrates filtration and degassing functions into one, eliminating the need for separate devices. It has a lower pressure drop, higher flow rate, and requires minimal maintenance. It also significantly shortens system commissioning time and eliminates the need for additional vent valves, while being more energy-saving, water-saving, and environmentally friendly. Traditional deaeration equipment often has single functions, higher energy consumption, and requires more frequent maintenance.

• Can the spiral deaerator work in high-pressure water systems?

Yes. The standard working pressure of our spiral deaerator is < 1.0 MPa, but we provide special designs for high-pressure scenarios (pressures < 2.5 MPa) through customization. We can tailor the device’s pressure-bearing components and structure to meet the requirements of your high-pressure water system, ensuring stable and safe operation while maintaining efficient degassing and filtration performance.