Robo Automatic Condensate Drain RD13

External Pneumatic Operated Large Volume Condensate Drain

The Robo Drain RD13 is the ultimate condensate drain, ideal for systems to 250 PSI. This unit is fully automatic, no electricity is required. Its design allows for it to fit into tight spots and is ideal for oil/water separators.

A unique air valve design uses a magnetic force to ensure both a positive opening and closing that prevents any air loss. An innovative ball valve support and positioning system prevents the problems associated with side-loading, which can cause premature sealing failure around the valve stem. A 1/2″ ball valve ensures that scale and rust will exit the vessel. This no clog compressed air condensate drain does not require a strainer, and is perfect for any application.

Click the "Request FREE Quote" button or contact a specialist at ISC Sales today to discuss which condensate drain will work best for your application.

Download Robo Automatic Condensate Drain RD13 Brochure
Download Robo Drain RD13 Installation and Operations Manual
Download Robo Drain RD13 Drawing

Features:Robo Automatic Condensate Drain RD13

  • Huge 72 oz. discharge capacity
  • Isolated trigger assembly
  • Low profile
  • Nonclogging
  • Translucent reservoir
  • Full port drain valve
  • Fully pneumatic
  • Automatic design


  • Designed for larger compressor installations
  • Reliable design – unaffected by contaminants
  • Fits in tight spots
  • Saves valuable air. Saves money
  • Easy-to-see condensate level “Quick check”
  • Handles scale and rust without clogging
  • No electricity required
  • Operates on demand

How It Works

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
Outlet1/2″ NPT
PowerClean, Dry Compressed Air 80 to 130 PSI
Housing Pressure0 to 250 PSI
Operating Temperature32° to 180° F
Weight22 lbs.
Discharge72 Ounces per cycle
Capacity6600 SCFM at aftercooler


ReservoirAluminum and Composite
ValveBronze w/SS. Ball and Stem
FloatStainless Steel
SeatStainless Steel

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