Pyramid. Pyramis Marketing India Pvt. Ltd offers 4.25 kg Bio Disposer, Classic. Pyramid. Pyramis Marketing India Pvt. Ltd. Is an ISO 9001:2000 certified company. The 4.25 kg Bio Disposer features 2600 rpm speed, 1/2 hp capacity and has 2.25 A power rated current [Amp]. This 4.25 kg Bio Disposer also offers noise less than 70 db.