Diffusion device

Diffusion element

Diffusion element with boundary zone treatment

Diffusion element with boundary zone treatment

Direct contact condenser

Direct contact steam injection heater

Direct injection contact apparatus for severe services

Direct quench apparatus

Directional microporous diffuser and directional sparging

Directional microporous diffuser and directional sparging

Disc for aeration of sewage

Disk diffuser with improved seal

Dispenser-liquid water treatment for room humidifier

Disposable container

Disposable humidifier assembly

Dissolving gas in liquid

Distillation apparatus

Distillation column employing structured packing which reduces w

Distillation column packing

Distillation column tray configuration