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The Expello Air Products Automatic Drain Valve eliminates moisture in compressed air systems. The valve replaces the manual drain petcock on any air tank within a vehicle’s compressed air system, whether the tank is on a vehicle or trailer. The Expello valve purges water, dirt and oil from the air system in a quick, 1-second burst, every 5 minutes of vehicle on time. That means clean, dry air and an end to frozen air brakes. The 15 watt thermostatically controlled heater ensures year round air system protection.
The Expello Air Products Pneumatic Drain Valve provides long lasting, durable air system protection. This drain valve expels build-up of harmful contaminants in air tanks on trucks, trailers, buses, RV’s and other equipment with compressed air systems. No system eliminates all the moisture from the wet tank all the time. This drain valve expels contaminants from your air tanks with a powerful blast of air whenever your compressor reaches cut out and at compressor cut in. The 50 watt heater with built in thermostat provides year round protection even in the coldest conditions.
The Expello Air Products Shop Valve automatically removes moisture from shop air compressors. The valve replaces the manual drain petcock on the compressor’s storage tank. This valve is actuated by running a line from the valve to the compressor’s governor. Each time the compressor reaches cut in and cut out the valve will purge the moisture from the tank.

Expello Data Sheets


Expello Drain Valve Flyer

Expello Electronic Drain Valve


Expello Pneumatic Drain Valve

Expello Shop Drain Valve


Expello Shop Drain Valve Spec