Internal Autodrains

Internal Autodrains for Compressed Air Systems

Internal autodrains automatically discharge condensate made up of water, compressor lubricant and airborne contamination from compatible compressed air equipment. They reduce reliance on manual draining and help prevent moisture from accumulating inside the system.

Choose the Correct Internal Autodrain

How an Internal Float Drain Works

Condensate collects around the internal drain and causes the float mechanism to rise. Once the liquid reaches the operating level, the valve opens and discharges the collected condensate. The valve then reseals when the liquid level falls.

• Automatic float-controlled condensate discharge.
• No external electrical supply or timer setting required.
• Compact design for installation inside compatible equipment.
• Helps prevent water build-up and internal corrosion.
• Reduces the risk of manual draining being missed.

Installation and Maintenance Guidance

• Isolate and fully depressurise the equipment before removing the existing drain.
• Confirm the replacement thread and outlet arrangement before installation.
• Keep sealing material clear of the valve and internal passages.
• Route the discharge line safely to a suitable condensate-treatment system.
• Test the drain for correct operation and leaks before returning the equipment to service.
• Inspect the drain regularly for oil sludge, dirt and blocked discharge passages.