Three Main Types (Most Commonly Used in Industry)
1. Mechanical Type (Float Type, Inverted Bucket Type)
Principle: Driven by the difference in condensate level and density.
• Free Float Type: As the condensate level rises, the float rises and opens the valve to drain water. No wear, water hammer resistant, continuous drainage.
• Inverted Bucket Type: Simple structure, impurity resistant, high temperature resistant, high cost-effectiveness.
Applications: Steam pipelines, heat exchangers, drying equipment, large-scale heat exchange applications.
2. Thermostatic Type (Constant Temperature Type, Bellows Type)
Principle: Driven by the temperature difference, the temperature-sensing element expands and contracts to open and close.
• Low-temperature condensate + air → Open
• High-temperature saturated condensate → Close
Features: Strong air venting capacity, quiet operation, suitable for low-temperature waste heat and heat tracing pipelines.
Applications: Instrument heat tracing, small heat exchangers, heating systems.
3. Thermodynamic Type (Disc Type)
Principle: Dynamically adjusted by the difference in flow rate and pressure between steam and condensate.
3. Thermodynamic Type (Disc Type)
Principle: Dynamically regulates steam flow rate and pressure difference between steam and condensate.
Advantages: Small size, high pressure resistance, high temperature resistance, unrestricted installation direction, extremely simple structure.
Disadvantages: Intermittent drainage, slight heat loss.
Applications: High-pressure steam, main steam pipes, small equipment, high-temperature and high-pressure conditions.
Core Parameters
• Nominal Diameter: DN15～DN100
• Nominal Pressure: PN16, PN25, PN40, PN63
• Applicable Temperature: Up to 425℃
• Valve Body Material: Cast iron, WCB cast steel, 304/316 stainless steel
• Connection Method: Threaded, flanged, welded
Core Advantages
1. Steam blockage and drainage, significantly saving steam energy consumption.
2. Eliminates water hammer, protecting valves, heat exchangers, and pipelines.
3. Expels air and non-condensable gases, improving heat exchange efficiency.
4. Reduces internal wall corrosion and extends equipment service life.
Applicable operating conditions: Steam boilers, heating networks, heat exchange units, reactors, drying equipment, heating systems, instrument piping heat tracing, printing and dyeing, chemical, food, pharmaceutical, petrochemical and other steam-related applications.
