Products > Pearlcomb > Tubular Membrane Type A special EPDM is used for the tubular type membrane. The diffuser is designed with a carefully-balanced tube so that it is not susceptible to buoyancy, as well as to produce the largest possible foaming surface and thus be economical by minimizing the need for piping. * Diffusers for sewage and night soil treatment plants. * Diffusers for industrial wastewater treatment plants. * Diffusers for agricultural effluent treatment. * Diffusers for livestock sewage treatment. * Diffusers for small combined purifiers. * Supply of oxygen to culture ponds. * Diffusion of exhaust gases.