Products > Pearlcomb > Disk Membrane Type A special EPDM is used for the disk type membrane. The EPDM contains less plasticizer especially designed to reduce the amount that comes off in water, so the properties of the rubber (elastomer) can be maintained for an extended period. The diffuser is also exceptionally energy-efficient. * 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. * Ultrafine foams released from the diffuser membrane efficiently circulate air (high mobility of oxygen). * Because the membrane pores are closed during shutdown, there is no sewage backflow or blinding of the membrane itself. Intermittent operation is also possible. * The integrated design of membrane with O-ring prevents leakage.