The present invention relates to a ventilation board, an insulating board, a ventilation system, and articles and architectural applications comprising said ventilation board and a method of manufacturing the ventilation board.

An aeration unit (1) and a method for aeration of water, in which aeration media (20) periodically are cleaned within the aeration unit (1).

The louver arrangement includes a plurality of louver fins.

The aeration and oxygenation device can significantly reduce the aeration pressure and aeration power consumption.

The venting system includes a vent line operably connected with the venting valve of the autoclave for venting the autoclave through the first flow path of the venting valve.

The sleeve has surfaces that respectively define a lower ventilation port between the interior space and a lower ventilation passage and an upper ventilation port between the interior space and an upper ventilation passage.

A plurality of stud members are attached to the aerating portion of the aerating members.

The end portions of the aerating members being angled with respect to the aerating portion.

Vent apertures communicate between the ventilation channels and the produce stored in the baskets.

An aeration apparatus can be connected to the plurality of aeration apertures in each photobioreactor.

The container further includes a venting device having a venting housing and a flow path conversion member positioned in the venting housing.

A multi-stage aeration apparatus includes at least two vertically oriented aeration modules.

An atmospheric vent structure for an expansion tank for a liquid reducing agent, the atmospheric vent structure being capable of preventing the liquid reducing agent from leaking from an atmospheric vent hose.

The venting system also includes an injector associated with the venting valve and configured to inject a fluid into the venting valve through a second flow path.

Ensure sufficient aeration capacity and mixing properties in aeration tanks