Animations HomeAnimations Pneumatic Conveying. Dense Phase and Dilute Phase Convey Regimes Dome Valve® - Pneumatic Conveying Systems, Robust Filling Valve Macawber Sandpump® - Pneumatic Conveying Systems, Sand Conveying Denseveyor® - Dense Phase Pneumatic Conveying Systems. Energy Efficient Macpump - Dense Phase Pneumatic Conveying Systems. Material Handling Ashveyor® - Dense Phase Pneumatic Conveying Systems. Ash Handling