Automatic float drain
No electricity required, reliable in industrial environments.
Suitable for use in compressed air systems where dirt is present in the air lines.
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Air treatment Automatic drains Automatic float drain
Efficiently remove condensate, even in dirty environments, without complex maintenance
100% autonomous operation
Ideal for demanding environments
Reduced downtime and costs
Use cases – Float drain application
1
Industrial compressed air networks
2
Compressors
3
Air dryers
4
Dusty environment
1 - Unit Expel
Technical specifications
Operating Temperature | 1.5-65°C |
Operating Pressure | 0-10 bar |
Connection | 1/2'' BSPT |
Drain Capacity | 400L/h (6.67L/min) |
Drain Outlet | 1/2'' BSPT |
Reservoir Material | Aluminium |
Valve Seal Material | Nitrile Rubber (NBR) |
Dimensions | 134 x 108 x 180 mm |
Orifice Diameter | 3 mm |
Which type of drain should you choose ?
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Frequently Asked Questions
The float-operated automatic drain operates completely autonomously, without any electrical power supply.
Its operating principle is simple :
- Condensate (water, oil, particles) accumulates in the drain.
- An internal float rises with the liquid level.
- When the level reaches a threshold, the valve opens automatically.
- Condensate is discharged, then the valve closes again.
This system enables automatic condensate discharge without any loss of compressed air.
The float-operated drain is recommended for most compressed air installations, especially when a reliable and simple solution is required.
It is ideal for :
- industrial compressed air systems
- compressors and dryers
- contaminated environments (oil, particles)
- installations requiring low maintenance
It is a versatile solution suitable for many applications.
The choice mainly depends on your application.
- The float-operated drain works without electricity and automatically adapts to the condensate level.
- The electronic drain requires adjustment and may lead to compressed air losses.
The float-operated drain is generally preferred for :
- its simplicity
- its reliability
- its no adjustment required
The choice of a float-operated drain depends on several criteria :
- condensate volume
- network pressure
- environment (clean or contaminated)
- operating constraints
It is important to choose a suitable model to ensure efficient condensate discharge without loss of compressed air.















