The Spirax Sarco Airodyn is a thermodynamic compressed air drain trap designed specifically for compressed air systems. It features an ASTM A743 Gr. CA40F stainless steel body with an oxidation-resistant ENP coating and a maximum operating pressure of 63 bar g. It is available with 1/2" and 3/4" threaded connections and can be installed horizontally or vertically with downward flow. An EN 10204 3.1 material certificate is available. The trap is suitable for condensate drainage from compressed air main line low points, with an optional high-precision disc for condensate discharge in high-purity systems.
Airodyn Thermodynamic Compressed Air Drain Trap | Spirax Sarco
Thermodynamic compressed air drain trap for condensate drainage from main line low points and clean systems.
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Model confirmation
Confirm model, connection and key options before ordering.
After-sales support
After-sales communication support is provided according to the order agreement.
Specifications
- Operating Principle
- Thermodynamic
- Service Medium
- Compressed air
- Surface Treatment
- ENP oxidation-resistant treatment
- Connections
- 1/2" BSP or NPT threaded; 3/4" NPT threaded
- Maximum Design Pressure
- PN63
- Maximum Operating Pressure
- 63 bar g@120°C
- Maximum Operating Temperature
- 400°C@42 bar g
- Minimum Operating Temperature
- 0°C
- Minimum Operating Differential Pressure
- 0.25 bar
- Backpressure Limit
- Backpressure must not exceed 80% of the inlet pressure
- Flow Coefficient
- Kv 3.09 (1/2", 3/4")
- Body Material
- Stainless steel, ASTM A743 Gr. CA40F
- Installation Orientation
- Horizontal pipework or vertical pipework with downward flow
- Pressure Equipment Directive Compliance
- 97/23/EC
- Material Certification
- EN 10204 3.1 (available)
Application scenarios
Condensate Drainage at Low Points or Collection Sections in Compressed Air Mains
Installed at low points, collection sections, or condensate accumulation points in compressed air mains to automatically discharge condensate and reduce liquid accumulation. The product is designed for compressed air service and operates on the thermodynamic principle. It can be installed in horizontal pipework or vertical pipework with downward flow.
Condensate Discharge in High-Cleanliness Compressed Air Systems
Designed for condensate discharge points in compressed air systems with stringent cleanliness requirements. Product documentation states that the Airodyn S is available with a high-precision disc for high-cleanliness applications. The body is stainless steel with an ENP oxidation-resistant surface treatment.
Selection points
Thermodynamic Compressed Air Drain Trap
Uses the thermodynamic disc operating principle and is designed to discharge condensate from compressed air systems.
Stainless Steel Body with ENP Oxidation-Resistant Treatment
The body is made of ASTM A743 Gr. CA40F stainless steel and has an ENP oxidation-resistant surface treatment.
Version for High-Cleanliness Applications
The Airodyn S is available with a high-precision disc for high-cleanliness applications.
Installation & maintenance notes
Installation Orientation Restrictions
Install the valve in horizontal pipework or vertical pipework with downward flow in accordance with the specified installation orientation to prevent adverse effects on condensate discharge and valve performance.
Operating Pressure, Temperature, Backpressure, and Differential Pressure Limits
During commissioning and operation, maintain the operating pressure and temperature within the specified product limits. Outlet backpressure must not exceed 80% of the inlet pressure, and the operating differential pressure must not fall below 0.25 bar to ensure correct valve operation.
FAQ
What types of compressed air systems is the Airodyn drain trap suitable for?
The Airodyn is a thermodynamic compressed air drain trap used to discharge condensate from compressed air systems. The specific configuration must be confirmed based on the actual model and application conditions.
How does the Airodyn disc orientation differ between clean and contaminated systems?
In clean systems, the side of the disc with the annular groove should face the valve seat. In contaminated systems, the disc can be reversed so that the side with the bleed groove faces the valve seat.
What sizes and pipe connections are available for the Airodyn?
Available connections include 1/2-inch threaded BSP or NPT and 3/4-inch threaded NPT.
What are the pressure and temperature limits of the Airodyn?
The maximum allowable pressure and maximum operating pressure are both 63 bar g@120°C. The maximum allowable temperature and maximum operating temperature are both 400°C@42 bar g. The minimum operating temperature is 0°C. Backpressure must not exceed 80% of the inlet pressure; otherwise, the drain trap cannot close.
What spare parts are available for the Airodyn?
Available spare parts include the disc, strainer screen and gasket, and strainer cap gasket. Specify the drain trap model and size when ordering spare parts.

