Internal gear pump Model HD81ER-1U33B - P/N 2581
HD: Heavy duty pump, Complete with motor on a common baseplate through flexible coupling
81: Pump size DN 80 - 3 "
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
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-impregnated non-asbestos Packing
