Internal gear pump Model CD151EMR-3U332S, 316Ti CD: Chemical duty pump in stainless steel with special configurations, Complete with motor on a common baseplate through flexible coupling 151: Pump size DN 150 - 6 " E: Suction/Discharge connection in-line M: Sealing with single mechanical shaft seal combined with a ball bearing as main bearing R: Safety valve, single acting for protection against excess pressure 3: Casing & cover: AISI 316Ti, Rotor/Idler: AISI329 duplex steel, Shaft: AISI 316Ti U: Idler bearing and main bearing lubricated by pump medium 3: Idler bush: Carbon, Idler pin: AISI 316Ti 3: Bearing bush: Carbon 2: Shaft seal: Single mechanical shaft seal Bellow type