KRAL KV - 5 Function description; 5.4 Pump structure

5 Function description
4.3 Sound pressure level
4.3 Sound pressure level
Guide values at 1 m distance, 1450 min
-1
, 10 bar
Size
5–
20
32–
42
55–
118
160–
275
370–
450
550–
660
851–
1301
1500–
1700
2200–
2900
Max. sound pressure level ±3 [dB(A)]
Pump 56.0 59.0 65.0 71.0 74.0 71.0 76.0 78.5 80.5
Motor 65.0 66.0 77.0 79.0 79.0 67.0 72.0 76.0 78.0
Pump unit 66.0 67.0 78.0 80.0 82.0 73.0 78.0 80.5 82.0
Tab.4: Sound pressure level
4.4 Weights
The weight is specified on the rating plate.
4.5 Accessories
Notice The technical data of the accessories are specified separately Ä Accessories,Page40.
5 Function description
5.1 Pump structure
2
1
11
10
3 4 5
9 8 7 6
Fig.3: Pump structure
1 Screw plug 7 Flange cover
2 Overflow valve 8 Vent hole
3 Pump housing 9 Thrust pin
4 Balancing cylinder 10 End cover
5 Ball bearing 11 Idle screw
6 Main screw
Operating instructions
OIK 09en-GB Edition 2019-11
9