AU
5
4.2 Denomination
4.3 Form of construction
Series
DN suction nozzle [mm – “]
Number: Impeller diameter
[mm]
Characteristics of the monobloc
motor:
Number: kW electric motor
G: Petrol motor
AU – ( M) 5 0 / 20 / (4)
Pump casing with axial suction and radial impulsion. Single-
stage impeller semi-open.
The monobloc (M) construction has a rigid coupling.
Monobloc construction
The non-monobloc construction has a flexible coupling.
Bearings: The monobloc (M) construction does not have
friction bearings. The non-monobloc construction has oil or
grease lubricated bearings, depending on the size of the
pump.
Shaft sealing: Mechanical seal.
4.4
Noise. Permitted levels
The acoustic pressure level of these pumps is less than 92 dB
(A) at 1 m in any operation point within the operation range
without cavitation. The acoustic power is less than 105 dB (A).
4.5
Forces and moments permitted in the nozzles
CAST IRON OR BRONZE CASING (1)
SUCTION IMPULSION
FORCES
[N]
MOMENTS
[N.m]
FORCES
[N]
MOMENTS
[N.m]
SIZE
PUMP
Fx Fy Fz Mx My Mz Fx Fy Fz Mx My Mz
AU-1,5
AU-2
AU-3
THREADED CONNECTIONS, DO NOT ADMIT STRESSES
AU-50
330 300 270 280 200 230 300 270 330 280 200 230
AU-65
420 370 340 300 220 240 370 340 420 300 220 240
AU-80
500 450 410 320 230 260 450 410 500 320 230 260
AU-100
670 600 540 350 250 290 600 540 670 350 250 290
AU-150
1000 900 810 500 350 410 900 810 1000 500 350 410
AU-200
1340 1200 1080 650 460 530 1200 1080 1340 650 460 530
(1) FOR NODULAR CAST, CARBON STEEL OR STAINLESS STEEL CASING, MULTIPLY THESE VALUES BY
2.0
