B & V Membranes We  Biogas Domes Suppliers in Chennai.Our innovative designs span the entire range of liner and coverwe have a cover or liner design for your application.Our biogas collection covers and balloons are proven to be among the best in the industry.A PVC double membrane biogas dome can be installed on new or refurbished steel and concrete tanks.The membrane biogas dome consists of two separate pvc membranes: an outer air membrane and an internal gas membrane. The area between the inner and outer membranes is continually pressurized with air using air blowers. The air inflates the outer membrane, providing structural rigidity and an adjustable system pressure.The membrane gas dome is fast to manufacture and install. It is easy to maintain, only requiring occasional visual inspections. The port holes or viewing windows in the outer membrane allow easy viewing of the inner membrane. Biogas Domes Biogas Domes Suppliers in Chennai. A level sensor is incorporated into the membrane gas holder to provide an indication of available gas volume and can be used to control other parts of the plant.