Armstrong CD-33S belongs to Controlled Disc series steam traps and features an innovative three-outlet design and low cycling frequency technology to ensure smooth trap operation, reduced wear, and long service life. All-stainless-steel construction ensures reliable operation under high-temperature, high-pressure, and corrosive conditions, making it suitable for industrial steam systems with high condensate discharge requirements.

Key Advantages

• Long-life design: Low cycling frequency reduces disc wear and provides a significantly longer service life than standard disc steam traps.

• Highly durable materials: ASTM A743 Gr. CA40 stainless steel body and internal components provide corrosion and oxidation resistance.

• Three-outlet design: Delivers more stable operation while reducing water hammer and wear.

• Excellent freeze resistance: Can be used in cold environments without dedicated heat tracing or insulation.

• Flexible installation: Allows horizontal or vertical installation to accommodate various piping layouts.

Technical Specifications

Parameter	Specification
Model	CD‑33S
Type	Controlled Disc steam trap
Material	ASTM A743 Gr. CA40 stainless steel
Sizes	1/2”, 3/4”, 1”
Connection	NPT/BSP threaded (flanged option available)
Maximum operating pressure	600 psig（41 bar）
Maximum operating temperature	752°F（400°C）
Design allowable pressure	915 psig@400°C（63 bar）
Capacity range	100–1,134 kg/h

Applications

• Drainage of condensate from main steam lines

• Medium and large heat exchangers

• Steam processes for various heating and processing equipment

• Steam systems in the chemical, pharmaceutical, and food processing industries

Why Choose Armstrong?

Armstrong International has more than 100 years of experience in steam systems. CD series steam traps are known worldwide for their rugged construction, stable performance, and easy maintenance.

📄 Get Official Documentation

• CD‑33 Series Product Data Sheet (PDF)

• Armstrong website: https://armstronginternational.com