Wennstrom

Updated:
2012-04-27

Ventilation solutions

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PRODUCTS
	Ventilation cover	Read more>
	Torkel™ - Atmospheric protection for biodiesel	Read more>

Ventilation cover

The ventilation cover prevents rain from falling straight down into the ventilation pipe at service stations. Each cover is also equipped with an insect net.

The cover is manufactured in two sizes: 2" and 3". It is easily fixed to the ventilation pipe by tightening three screws.

Versions of the Torkel™		Item no.
	Ventilation cover 2"	ES1060L
	Ventilation cover 3"	ES1080L

Torkel™ - atmospheric protection for biodiesel

Renewable fuels
In order to decrease the carbon footprint the general use of renewable fuels is on the increase. To get a quick effect it is important that the fuel can be used in existing vehicles and for this reason the blending of renewable fuels with mineral oil products has increased.

Biodiesel
Biodiesel is a vegetable oil- or animal fat-based diesel fuel that is often used blended with petrodiesel. Biodiesel is, like ethanol, hygroscopic which can cause problems since water accelerates the growth of microbe colonies which can plug up filters.

Keep water out
One of the main challenges when it comes to storing biodiesel is to keep water out of the tank. There are a number of openings that have to be taken into consideration. The dip tube is one of these which can be dealt with using our Outlock.

Ventilation pipe
Another potential source of water is the ventilation pipe. Every time product is dispensed from the tank, air is sucked in via the ventilation pipe. During periods of high humidity this also means that water is introduced into the tank and since biodiesel is hygroscopic there is a risk that the water will mix with diesel. This will accelerate bacterial growth that can result in expensive consequences.

Naturally closed
With Torkel™ the tank will be naturally closed. This will stop the normal “passive” exchange of air due to temperature changes. This air with water content may otherwise condense on the inside of the ventilation pipes and tank, collecting and trickling down into the diesel.

Dry air
By leading air that is sucked into the tank during normal refueling at the dispenser through a filter, Torkel™ will effectively dry the air that must be allowed into the tank. When the tank is being filled up the air pushed out will also help take moisture from the filter thereby prolonging its’ lifespan.