The Spirax Sarco CAS14 and CAS14S are stainless steel ball float air and gas traps rated to PN25. They are designed specifically for drainage applications with vertical connections and downward flow. The body is manufactured from austenitic stainless steel, with a maximum operating pressure of 14 barg and a differential pressure of up to 14 bar, depending on the specific gravity of the medium. The traps are available with threaded or socket weld connections and an optional integral strainer. They are primarily used to drain condensate from compressed air and other gas systems.
CAS14S Austenitic Stainless Steel Ball Float Air and Gas Trap, Front View | Spirax Sarco
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CAS14/CAS14S Stainless Steel Ball Float Air and Gas Trap | Spirax Sarco
Stainless steel ball float air and gas trap for condensate drainage from compressed air systems, with an optional integral strainer.
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Specifications
- Trap Type
- Austenitic stainless steel ball float air and gas trap
- Applicable Media
- Compressed air and other gases
- Body Material
- Austenitic stainless steel (316), EN 10213-4 1.4408, ASTM A351 CF8M
- Design Pressure Rating
- PN25
- Maximum Allowable Pressure
- 25 barg
- Maximum Allowable Temperature
- 300°C
- Maximum Operating Pressure
- 14 barg
- Maximum Operating Temperature
- CAS14: 200°C; CAS14S: 225°C
- Minimum Operating Temperature
- -20°C
- Minimum Liquid Specific Gravity
- 0.6
- Maximum Differential Pressure
- 14.0 bar at specific gravities of 1.0, 0.9, and 0.8; 9.0 bar at a specific gravity of 0.7; 5.0 bar at a specific gravity of 0.6
- Connection Sizes
- 1/2", 3/4", 1"
- Connection Types
- BSP threaded (BS 21, DIN 2999), NPT threaded (ANSI B 1.20.1), or socket weld (ANSI B 16.11, BS 3799 Class 3000, DIN 3239)
- Installation Orientation
- Vertical connection with downward flow
- Valve Cone Material
- CAS14: Viton; CAS14S: AISI 440B stainless steel
- Strainer Option
- Optional integral strainer
- Pressure Equipment Compliance
- European Pressure Equipment Directive 97/23/EC
Application scenarios
Condensate Drainage in Compressed Air Systems
Suitable for condensate drainage in compressed air systems. CAS14 and CAS14S are installed vertically with downward flow and can be used for system drainage.
Condensate Drainage in Other Gas Systems
Suitable for condensate drainage in other gas systems. The product documentation specifies compressed air and other gases as applicable media and requires vertical installation with downward flow.
Selection points
316 Austenitic Stainless Steel Body
The body is made of 316 austenitic stainless steel, with material designations EN 10213-4 1.4408 and ASTM A351 CF8M. It is suitable for compressed air and gas systems requiring corrosion-resistant valve bodies.
Maximum Differential Pressure Varies with Liquid Specific Gravity
The maximum differential pressure depends on liquid specific gravity: 14.0 bar at a specific gravity of 1.0, 0.9, or 0.8; 9.0 bar at a specific gravity of 0.7; and 5.0 bar at a specific gravity of 0.6. The allowable differential pressure should be determined from the actual liquid specific gravity during selection.
CAS14 and CAS14S Valve Cone Materials and Operating Temperatures
CAS14 uses a Viton valve cone and has a maximum operating temperature of 200°C. CAS14S uses an AISI 440B stainless steel valve cone and has a maximum operating temperature of 225°C. Select the appropriate model according to the operating temperature and valve cone material requirements.
Vertical Connection with Downward Flow
The product must be installed with a vertical connection and downward flow. During selection, confirm that the available installation space and pipeline flow direction meet these requirements.
Small-Bore Connections in Multiple Configurations
The product is available in 1/2 in, 3/4 in, and 1 in connection sizes and supports BSP threaded, NPT threaded, or socket-weld connections. Select the connection to match the pipe size and connection standard.
Installation & maintenance notes
Install in the Specified Orientation and Flow Direction
CAS14/CAS14S must be installed with a vertical connection and downward media flow, with the float arm in a horizontal plane to ensure correct operation of the float mechanism.
FAQ
How does the CAS14/CAS14S austenitic stainless steel ball float trap work?
CAS14/CAS14S uses the linkage between the float and valve cone to control discharge and shutoff. With vertical installation and downward flow, the trap opens for discharge when the float drops and closes when the float rises, helping the gas system operate under optimum conditions.
What key points should be considered when selecting CAS14/CAS14S?
Consider the connection size (1/2, 3/4, or 1 in), valve cone material (Viton or stainless steel), connection type (threaded or socket weld), maximum operating pressure and temperature, and whether an integral strainer is required. The exact configuration must be confirmed based on the actual model and application conditions.
What are the main applications for this product series?
The products are suitable for condensate drainage in compressed air and other gas systems, helping systems remain dry and reducing the risk of water-induced corrosion and water seal failure. The specific application should be evaluated based on the actual system media and pressure conditions.
How can certification and compliance information for CAS14/CAS14S be obtained?
The products comply with the European Pressure Equipment Directive 97/23/EC. An EN 10204 3.1.B certificate can be provided when required. Certificate requirements should be specified when placing the order.
How can availability be confirmed when different connection types or additional options are required?
Available connection sizes are 1/2, 3/4, and 1 in, with threaded and socket-weld connection types. For other connections, consult the relevant supplier to confirm availability and delivery conditions.