Description
Product Overview
Armstrong CD-33SL is a high-performance Controlled Disc steam trap designed for low-capacity steam systems and tracing applications. Its unique three-vent design provides more stable disc operation, reduces wear, and extends service life. Constructed entirely from stainless steel, it offers high-temperature, high-pressure, and corrosion resistance for a wide range of industrial steam systems.
Key Features
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Long-life design: Low cycling rate and hardened valve seat significantly extend service life.
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Three-vent design: Reduces disc vibration for more stable operation.
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Highly durable material: ASTM A743 Gr. CA40 stainless steel provides corrosion and oxidation resistance.
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Freeze-resistant design: Suitable for outdoor and cold-weather environments.
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Flexible installation: Supports horizontal or vertical installation with no special flow-direction restrictions.
Technical Specifications
| Parameter | Information |
|---|---|
| Model | CD-33SL |
| Type | Controlled Disc steam trap |
| Material | ASTM A743 Gr. CA40 stainless steel |
| Size | 1/2”, 3/4” |
| Connection | NPT, BSP threaded (flanged option available) |
| Maximum allowable pressure | 600 psig (41 bar) |
| Maximum allowable temperature | 752°F (400°C) |
| Design allowable pressure | 915 psig@400°C (63 bar) |
| Capacity | 45–340 kg/h (low-capacity version) |
Applications
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Drip removal from main steam lines
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Steam tracing systems
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Small process heating equipment
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Heat exchangers and HVAC systems
Brand Advantages
Armstrong International has specialized in steam and thermal energy systems for more than 100 years. CD series steam traps are recognized in industrial applications for high reliability and low energy consumption, helping users reduce operating costs and extend equipment service life.
📄 Official Documentation
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For more information, visit the Armstrong website and search for “CD-33SL”.