Robo-Drain RD11-T

External Pneumatic Condensate Drain for Compressed Air Systems

A fully automatic, zero loss drain that protects compressed air systems with out the need for electricity. Translucent reservoir for visual assurance of operation. Ideal to be used along with Oil/Water Separators.

RD11 Robo-Drain Demand Drain


  • Large 24 oz. capacity discharge 
  • Isolated trigger assembly 
  • Heavy duty industrial drain 
  • Horizontal low profile 
  • Translucent reservoir 
  • Non clogging, full port drain valve 
  • Automatic design
  • NPT or BSPP connections available 


  • Ideal for most compressor installations 
  • Reliable design – unaffected by contaminants 
  • One unit works for multiple compressed air systems. Saves valuable air. Saves money 
  • Fits in tight spots – can be mounted under equipment 
  • Easy-to-see condensate level “Quick check” 
  • Handles scale and rust without clogging 
  • No electricity required 
  • Operates on demand 

How it Removes Condensate From Compressed Air Systems

Condensate enters the drain through one of two inlet connections. As condensate is collected and the translucent reservoir fills, a stainless steel float mechanism rises. When the condensate reaches a design level, the float mechanism actuates an isolated magnetic trigger assembly. The trigger assembly directs control air to the valve actuator, which in turn opens a full-port drain valve.

Condensate will then exit the unit. As the float drops, the trigger assembly closes the control air line and the valve actuator closes the ball valve. The drain is then returned to the collection mode.


Inlets(2) 3/4″ NPT (BSPP Connections Available)
Outlet1/2″ NPT or (BSPP Connections Available)
PowerClean, Dry Compressed Air 80 to 130 PSI
Pressure0 to 250 PSI
Operating Temperature32° to 180° F.
Weight17 lbs.
Discharge24 ounces per cycle


Reservoir Aluminum and Composite
ValveBronze w/S.S. Ball and Stem
FloatStainless Steel
SeatStainless Steel
*Consult factory for additional options


Ordering Information

Stock No.Description
RD11-T Robo-Drain RD11 -T

Support and Downloads

Robo-Drain RD11 Installation Operating Manual

Robo-Drain RD11 Drawing

Want more information on managing condensate in your compressed air system?

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