Robo Automatic Condensate Drain RD750

External Pneumatic Operated High Pressure Condensate Drain

The Robo Drain RD750 is the ultimate high-pressure, fully automatic zero loss condensate drain. Its design allows for it to fit into tight spots and it handles scale and rust without clogging. A unique air valve design uses magnetic force to ensure both a positive opening and closing that prevents any compressed air loss.

The magnetic force is cleverly positioned away from the condensation level to prevent any attraction of metal particulate. An innovative ball valve support and positioning system prevents the side loading problem which otherwise would cause premature sealing failure around the valve stem.

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 RD750 Brochure
Download Robo-Drain RD750 Installation and Operations Manual
Download Robo-Drain RD750 Drawing

Features:Robo Automatic Condensate Drain RD750

  • Rated to 750 PSI
  • Isolated trigger assembly
  • Low profile
  • Nonclogging
  • Stainless steel reservoir
  • Full port drain valve
  • Fully pneumatic
  • Automatic design


  • Ideal for high-pressure compressor installations
  • Reliable design – unaffected by contaminants
  • Fits in tight spots
  • No strainers to clean
  • Durable for high-pressure capacity
  • 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.
Discharge24 Ounces per cycle


Reservoir304 Stainless Steel
ValveStainless Steel w/SS. Ball and Stem
FloatStainless Steel
SeatStainless Steel

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