Internal gear pump Model HD51ER-1U33B - P/N 2559
HD: Heavy Duty, bare shaft pump in cast iron
51: Pump size DN 50 - 2"
E: Suction/Discharge connection in-line
R: Safety valve, single acting for protection against excess pressure
1: Casing & cover: GG-25, Rotor/Idler: GG-25, Shaft: St.60.2
U: Idler bearing and main bearing lubricated by pump medium
3: Idler bush: carbon, idler pin: Hardened 16 MnCr5
3: Bearing bush: Carbon, Shaft: St.60.2
B: Shaft seal: Teflon-impergenated, non-asbestos packing
