Robo-Drain RD13

Large Capacity External Pneumatic Operated Condensate Drain

A fully automatic, zero loss drain that protects compressed A fully automatic, large volume, zero loss drain that requires no electricity. Translucent reservoir for visual assurance of operation. Ideal for Oil/Water Separators.


  • Huge 72 oz. capacity
  • Isolated trigger assembly
  • Heavy duty industrial drain
  • Horizontal low profile
  • Translucent reservoir
  • Non clogging, full port drain valve
  • Fully pneumatic
  • Automatic design
  • NPT or BSPP connections available 


  • Designed for larger 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 (BSPP Connections Available)
PowerClean, Dry Compressed Air 80 to 130 PSI
Pressure0 to 250 PSI
Operating Temperature32° to 180° F.
Weight22 lbs.
Discharge72 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
RD13 Robo-Drain RD113

Support and Downloads

Robo-Drain RD13 Installation Operating Manual

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