Basic Parameters and Applicable Scenarios
Model Meaning: The WSD series is a classic automatic drainage component model of Atlas Copco. 250-750 represents the flow range or pressure grade it is compatible with (specific parameters should refer to the official manual).
Working Pressure: Generally applicable to 0-16 bar compressed air systems, meeting the pressure requirements of most industrial air compressors.
Interface Specifications: Commonly G1/2" or NPT 1/2" threaded interfaces, facilitating connection with various pipelines.
Applicable Models: Widely used in GA series (such as GA37-GA160 medium-sized screw machines), large centrifugal air compressors, and post-treatment equipment (such as FD series filters, CD series dryers).
Structure and Working Principle
Core Components: Include valve body, electronic timer, solenoid valve, filter screen, drainage outlet, and sealing components, using an electric timing control method.
Working Logic:
Set the drainage cycle (such as adjustable from 0.5 to 45 minutes) and drainage duration (such as adjustable from 0.5 to 10 seconds) through the built-in timer.
After reaching the set time, the solenoid valve is energized to open, and the condensate water is discharged under the system pressure.
After drainage is completed, the solenoid valve is de-energized to close, stopping the drainage and preventing air leakage.
Advantages: Compared to pure mechanical drainage valves, the timing control is more precise, and parameters can be flexibly adjusted according to environmental humidity and usage conditions, reducing ineffective exhaust.
Core Features
Original Quality Assurance: Produced according to Atlas Copco's original factory standards, the materials (such as the valve body being brass or engineering plastic, and the sealing components being oil-resistant rubber) are suitable for the multi-oil and humid environment of the compressed air system, with a lifespan of over 100,000 actions.
Low Energy Consumption Design: The solenoid valve responds quickly and has a tight seal when closed, with a leakage volume of ≤0.1 L/min (standard conditions), significantly reducing compressed air waste.
Anti-clogging Capability: Built-in stainless steel filter screen can filter impurities in the condensate water (such as metal debris, oil sludge), reducing the risk of valve core jamming.
Installation Flexibility: Supports horizontal or vertical installation, equipped with a protective cover, suitable for complex environments such as workshops.
Maintenance Convenience: Modular design, filter screens can be disassembled and cleaned separately, components such as the solenoid valve coil can be replaced individually, reducing maintenance costs.
Common Faults and Maintenance Suggestions
Fault Manifestations:
No Drainage: Timer failure, solenoid valve coil burnout, filter screen clogging or pipe freezing (low-temperature environment).
Continuous Leakage: Valve core sealing component wear, solenoid valve stuck and not fully closed.
Abnormal Operation: Incorrect timer parameter setting, unstable power supply voltage.
Maintenance Tips:
Regular Cleaning: Remove impurities by disassembling the filter screen and cleaning every 3 months; shorten to 1 month in harsh environments.
Parameter Adjustment: Adjust the drainage cycle according to condensate water volume (such as shorten the cycle during rainy seasons, prevent drainage outlet freezing in winter).
Component Replacement: Replace sealing components or solenoid valve coil when they are aged or faulty (such as WSD250-750 dedicated solenoid valve coil, O-ring); replace the entire drainage component when the valve body has cracks, valve core is severely worn, or the timer fails.
