In the center of the container, a V4A stainless steel column is placed, from which straps run in a star shape outwards to the container wall and a net is laid over it over the entire surface. Net and straps have the following two functions. Firstly, supporting function for the membrane so that it can not sag into the substrate when the carrying air is discharged. Secondly, the belt and net construction is well suited as a settlement area for biogas bacteria.
Inner and outer membrane consist of a double coated, plastic coated polyester fabric. This is highly tear-resistant, flame retardant B1 to DIN4102 and UV-stabilized.
Sizes and forms of gas storage
In addition to the normal shape of a 1/4 ball we also offer variants with increased volume in these variants 33%, 40% and 50% - ball.
The scope of delivery includes the membrane roof, center support made of V4A stainless steel, belt substructure with net, double stainless steel flat iron clamp, blower, underpressure and overpressure protection as well as a level indicator.
material and colors
Polyester fabric with plastic coating on both sides, UV stabilized, flame retardant according to DIN 4102, standard basis weight = 900g / m², standard tensile strength = 3,500 - 4,000 N / cm, HF60 welded