PVC Double Membrane Cover

PVC Double Membrane Cover

PVC DOUBLE MEMBRANE COVER

PVC Double Membrane covers are ideal as gas buffers and covers on tanks. A double membrane roof is a double cover where the outer membrane is always kept under pressure. As a result, rain, snow and wind have little effect on it. The inner membrane holds the gas into the tank. The cover has the major advantage of a large variable gas collection capacity and can serve as a cover for a digester or post-digester, to temporarily collect gas. Naturally, a double membrane roof complies with European environmental legislation. Depending on the chemical composition of the liquid and height of the tank wall, the required center column can be applied in either hardwood or a stainless steel version. Thanks to highly chemically resistant and mechanically strong foils, the double membrane cover meets the highest quality standards. New cutting and welding procedures improve the absorption of biaxonal forces in the covers. The hemispherical construction provides a low wall load. The PVC double membrane covers are provided including blower.

QUALITY

Each double membrane roof is customized due to customer-specific requirements and external factors. The cover consists of a separately installed, lower and upper membrane and is manufactured with biaxial reinforced fabrics with high quality, chemical and biogas resistant flame retardant and anti static PVC coating. Operating pressures of 0 to 10 mbar and an underpressure situation of up to -1.5 mbar are possible. Higher pressure is available upon request. The tension straps and net support the undermembrane against low vacuum situations.

Construction

The double membrane roof is prefabricated delivered to the construction site . The tension straps and net support the inner membrane against low vacuum situations. The support belts (traction force of 2500kg) are mounted at an incline. Optional service openings can be provided.