Please note: All presented publications are protected by copyright and may not be used - even partly - without the written approval of WelChem GmbH.

How to... Sieve Trays

How to design and optimize Sieve Trays

Sieve trays have been used for about a hundred years and are therefore one of the best studied tray type. They can be easily adapted to different design scenarios (flow rates) using different perforations, they do not require any special tool in production and thus are inexpensive to manu­facture.

Download PDF

How to... Bubble Cap Tray

How to design and optimize Bubble Cap Trays

Bubble Cap trays have been used for about 80 years in technical applications and are a very well studied tray type. Nowadays, they are mainly used for handling low liquid loads, as for this field of application there are only few alterna­tives!

Download PDF

How to... Float Valve Trays

How to design and optimize Float Valve Trays

Float Valve Trays (also called movable valve trays or ballast trays) are the most flexible tray type among the standard trays. They have been used for about 80 years in technical appli­cations, they are well studied and they are still the mainly used tray type in towers.

Download PDF

How to... Fixed Valve Trays

How to design and optimize Fixed Valve Trays

Fixed Valve trays were first published and paten­ted by Nutter in 1967. After some improve­ments in scale and development of NC-machinery, they gained technical relevance in the 1990s. Therefore they are the most recent, technical re­levant development in contact elements of trays.

Download PDF