CA1 Air Separator

Warranty:
2
Years

The Fernox CA1 Air Separator is a high-efficiency deaerator designed to continuously remove air and microbubbles from closed-loop commercial heating and cooling systems. By removing air from the circulating fluid, the CA1 helps reduce corrosion, minimise system noise and maintain efficient, reliable system performance. Its low pressure drop design supports energy efficiency and balanced flow, making it ideal for commercial applications.
Suitable for systems containing up to 50% glycol, the range is available in two versions, with flanged connections from DN50 to DN150:
• Standard Flow – suitable for velocities up to 1.5 m/s
• High Flow – suitable for velocities up to 3.0 m/s

  • Continuous microbubble removal to reduce corrosion and extend system life
  • Low pressure drop design maintains stable flow and system balance
  • Carbon steel body with corrosion-resistant coating for long-term durability
  • Integrated automatic air vent ensures reliable, passive deaeration at all times.
  • Maintenance-free operation with no moving parts or consumables
  • Compliant with PED 2014/68/EU
Available Versions
Product Code:
33006236/0050
Nominal Flow Velocity: 1.5 m/s (standard-flow), DN Size: 50
Product Code:
33006236/0150
Nominal Flow Velocity: 1.5 m/s (standard-flow), DN Size: 150
Product Code:
33006236/0080
Nominal Flow Velocity: 1.5 m/s (standard-flow), DN Size: 80
Product Code:
33006236/0125
Nominal Flow Velocity: 1.5 m/s (standard-flow), DN Size: 125
Product Code:
33006236/0100
Nominal Flow Velocity: 1.5 m/s (standard-flow), DN Size: 100
Product Code:
33006236/0065
Nominal Flow Velocity: 1.5 m/s (standard-flow), DN Size: 65
Product Overview

High-efficiency separation – The CA1 is designed to separate both entrained air and microbubbles from the circulating fluid. As the water passes through the separator, the internal design promotes the collection of air, which is then automatically discharged through the integrated air vent.

Optimised flow design – The internal flow path has been designed to support effective air separation while maintaining a low pressure drop through the unit. This allows the CA1 to operate efficiently without unnecessarily restricting system flow.

Robust construction – The CA1 features a corrosion-resistant coated carbon steel body designed for long-term use in commercial heating and cooling systems. Flanged connections provide a secure connection for installation within commercial plant rooms and HVAC systems.

Maintenance-free operation – Once installed, the CA1 operates continuously without moving parts or consumable components. The integrated automatic air vent releases separated air without requiring manual intervention.

Application

Designed for commercial and industrial closed-loop heating and chilled water systems, the Fernox CA1 Air Separator is typically installed on the main flow or return line, preferably at high turbulence points to maximise air separation. It is suitable for a wide range of commercial applications, including plant rooms, hospitals, schools, office buildings and other large commercial facilities.

Performance

Maximum Operating Pressure: 10 bar
Test Pressure: >15 bar
Max. Static head: 15m (Heating), 5m (Cooling)
Operating Temperature Range: 0 – 110°C
Installation Orientation: Horizontal pipework
Connection Type: Flanged
Suitable Fluids:
• Water
• Glycol-water mixtures (up to 50%)

Operating Principle
System water enters the CA1 and passes through an internal geometry that reduces flow velocity and encourages the release of entrained air. Microbubbles coagulate and rise to the upper chamber and are expelled via the integrated automatic air vent. This continuous process helps reduce internal corrosion, noise, and circulation problems, without requiring maintenance or system shutdown.

Physical Specification / Properties

• Body Material: Carbon steel
• Finish: Corrosion-resistant industrial coating
• Flanged Connections: DN50–DN150, EN 1092-1 / PN16
• Air Vent Connection: 1/2” BSP
• Installation Orientation: Horizontal pipework

Package, Handling & Safety

Each CA1 unit is supplied fully assembled and hydrostatically tested at >15 bar. The unit includes a factory-installed automatic air vent and lifting lugs for larger sizes. No special storage conditions are required. Installation must be carried out by qualified personnel in accordance with system specifications and safety guidelines.

Volumetrics
Product CodeNominal Flow Velocity & DN SizeSingle Unit BarcodeSingle Unit Dimensions(Height x Width x Depth)Single Unit Weight (kg)Outer Carton Barcode (ITF)Outer Carton Dimensions(Height x Width x Depth)Outer Carton Box Weight (kg)
33006236/0065
Nominal Flow Velocity: 1.5 m/s (standard-flow), DN Size: 65
5014551004368
210 x 650 x 380 mm
16.80
x x mm
kg
33006236/0100
Nominal Flow Velocity: 1.5 m/s (standard-flow), DN Size: 100
5014551004382
280 x 760 x 500 mm
27.20
x x mm
kg
33006236/0125
Nominal Flow Velocity: 1.5 m/s (standard-flow), DN Size: 125
5014551004399
797 x 635 x 324 mm
52.00
x x mm
kg
33006236/0080
Nominal Flow Velocity: 1.5 m/s (standard-flow), DN Size: 80
5014551004375
280 x 760 x 500 mm
24.20
x x mm
kg
33006236/0150
Nominal Flow Velocity: 1.5 m/s (standard-flow), DN Size: 150
5014551004405
797 x 635 x 324 mm
54.00
x x mm
kg
33006236/0050
Nominal Flow Velocity: 1.5 m/s (standard-flow), DN Size: 50
5014551004351
210 x 650 x 380 mm
15.80
210 x 650 x 380 mm
15.80 kg
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