Danfoss AB-PM DN 40, Datasheet, Page: 6 / 12

Data sheet AB-PM DN 40-100
6 | VD.HR.D1.02 © Danfoss | 2018.01
Fig. 6
Fig. 5
DN 40 Flow limitation on Δp factory setting
Factory
setting
∆p setting [kPa]
Δp
r
[kPa]
40% 50% 60% 70% 80% 90%
100%
/0 turns 5 turns 10 turns 15 turns 20 turns
Q [l/h]
10 4600 5520 6348 7084 7728 8280 9200
15 4000 4800 5520 6160 6720 7200 8000
20 3300 3960 4554 5082 5544 5940 6600 9200
25 2500 3000 3450 3850 4200 4500 5000 8000 10200
30 2070 2310 2520 2700 3000 6600 9200 11100
35 5000 8000 10200 11900
40 3000 6600 9200 11100
45 5000 8000 10200
50 3150 6600 9200
55 5000 8000
60
3150 6600
Table 1
Example 1
Given : Design flow to zone
4200 l/h, pressure drop over
the zone at design flow 25 kPa.
Solution: AB-PM DN 40 is
selected. Δp setting is kept
at factory setting and flow
limitation is changed to 80 %.
AB-PM will control differential
pressure of 25 kPa when
design flow is achieved and
the flow to the zone will be
limited to 4200 l/h
2000
3000
4000
5000
6000
7000
8000
9000
10000
11000
12000
13000
10 15 20 25 30 35 40 45 50 55 60
Q
[l/h
]
∆p
r
[kPa]
Example 1
40 %
50 %
60 %
70 %
80 %
90 %
100 %
5 turns
10 turns 15 turns 20 turns
0
5000
10000
15000
20000
25000
30000
35000
40000
45000
50000
55000
10 15 20 25 30 35 40 45 50 55 60
FL
OW
[L
/H
]
ΔP
r
[kPa ]
DN 100
DN 80
DN 65
DN 50
DN 40
AB-PM HP DN 10-32 1)
1)
See datasheet AB-PM
DN 10-32
DN 40
Sizing
Sizing graph - ΔP/ max. flow