Internal gear pump Model PD41ER-4U22B - P/N 2676 PD: Petrochemical Duty Pump in carbon steel 41: Pump size DN 40 - 1 1/2" E: Suction/Discharge connection in-line R: Safety valve, single acting for protection against excess Pressure 4: Casing & cover: GS-52.3, Rotor/Idler: GG-25, Shaft: St.60.2 U: Idler bearing and main bearing lubricated by pump medium 2: Bearing: Idler bush: Bronze, idler pin: Hardened 16 MnCr5 2: Bearing bush: Bronze, Shaft: St.60.2 B: Teflon-impregnated, non asbestos packing Motor: K21R100L4