
Operating Guide
AB-QM 4.0 Flexo, DN 15-20
max
min
Installation
MAINTENANCE
FREE
-10 ... 95°C
PN 25
ACT UATOR
Δp
= 600kPa
max.
(6 bar)
Installation
27 mm
29 mm
30 mm
32 mm
DN15 27 mm
DN20 32 mm
①
DN15 27 mm
DN20 29 mm
①
DN15 27 mm
DN20 29 mm
②
DN15 27 mm
②
DN20 30 mm
AQ336274304280en-000102 | 1© Danfoss | 2022.01

AB-QM 4.0 Flexo, DN 15-20
Insulation
③
②
⑤
①
④
⑤
AQ336274304280en-000102 2 | © Danfoss | 2022.01

AB-QM 4.0 Flexo, DN 15-20
Setting
Shut-off
Δp
max
Setting Locking
x 10%
= 10 (10 0%)
= 10 bar
SHUT OFF
Filter cleaning
16 mm
16 mm
②
④
①
⑤
③
16 mm
© Danfoss | 2022.01 | 3AQ336274304280en-000102

AB-QM 4.0 Flexo, DN 15-20
Operation
Shut-of f / Maintenance
System
Flushing of main pipe
System
AQ336274304280en-000102 4 | © Danfoss | 2022.01

AB-QM 4.0 Flexo, DN 15-20
Backward flushing
System
Forward flushing
5 mm
3.5 - 4.5 mm
× 0.7 mm
CLOSE
OPEN
System
5 mm
3.5 - 4.5 mm
× 0.7 mm
CLOSE
OPEN
© Danfoss | 2022.01 | 5AQ336274304280en-000102

AB-QM 4.0 Flexo, DN 15-20
Sizing
Measurements
Setting
10% 20 0.006 0.09 65 0.018 0.29 120 0.033 0. 53 110 0.03 0.48 190 0.053 0.84
15% 30 0.008 0 .13 98 0.027 0.43 180 0.050 0.79 165 0.05 0.73 285 0. 079 1.25
20% 40 0 .0 11 0.18 13 0 0.036 0.57 240 0.0 67 1.06 220 0.06 0.97 380 0 .106 1.67
25% 50 0.014 0.22 163 0.045 0.72 300 0.083 1.32 275 0.08 1.21 475 0.132 2.09
30% 60 0.0 17 0.26 195 0.054 0.86 360 0.100 1. 59 330 0.09 1.45 570 0.15 8 2. 51
35% 70 0.019 0. 31 228 0.063 1.0 0 420 0 .117 1. 85 385 0. 11 1.70 665 0 .185 2.93
40% 80 0.022 0.35 260 0.072 1.14 480 0 .133 2 .11 440 0.12 1.94 760 0 .211 3.35
45% 90 0.025 0.40 293 0. 081 1.29 540 0 .150 2. 38 495 0.14 2.18 855 0.238 3.76
50% 10 0 0.028 0.44 325 0.090 1.43 600 0.167 2.64 550 0.15 2.42 950 0. 264 4.18
55% 11 0 0 .031 0.48 358 0.099 1.57 660 0.18 3 2.91 605 0 .17 2.66 1045 0.290 4.60
60% 12 0 0.033 0.53 39 0 0 .108 1.72 720 0. 200 3.17 660 0 .18 2 .91 114 0 0. 317 5.02
65% 130 0.036 0.57 423 0.117 1.86 780 0 .217 3.43 715 0.20 3.15 12 35 0.343 5.44
70% 140 0.039 0.62 455 0 .126 2.00 840 0.233 3.70 770 0. 21 3.39 133 0 0.370 5.86
75% 150 0.042 0.66 488 0.135 2.15 900 0.250 3.96 825 0.23 3.63 1425 0.396 6. 27
80% 160 0.044 0.70 520 0 .144 2.29 960 0.267 4.23 880 0. 24 3.87 15 20 0.422 6.69
85% 170 0.047 0.75 553 0 .154 2.43 1020 0. 283 4.49 935 0.26 4.12 1615 0.449 7.11
90% 180 0.050 0.79 585 0.163 2.58 1080 0.300 4.76 990 0.28 4.36 1710 0.475 7. 53
95% 190 0.053 0.84 618 0.17 2 2.72 114 0 0. 317 5.02 10 45 0.29 4.60 1805 0.502 7.95
100% 20 0 0.056 0.88 650 0.181 2.86 12 00 0.333 5.28 110 0 0. 31 4.84 1900 0.528 8. 37
DN15 LF DN 15 DN 15 HF DN 20 DN 20 HF
L/h L/s GPM L/h L/s GPM L/h L/s GPM L/h L/s GPM L/h L/s GPM
Q
Δp
AQ336274304280en-000102 6 | © Danfoss | 2022.01

AB-QM 4.0 Flexo, DN 15-20
Dimensions
C
F
F
B
F
F
D
DN15 LF DN15 DN15HF DN20 DN20HF
A 185 185 185 200 200
B 111. 5 111. 5 111. 5 111.5 111. 5
C 96 96 96 96 96
D 62 62 62 65 65
E 53 53 53 53 53
F R ½ R ½ R ½ R ¾ R ¾
E
A
B
A
A
A B
DN15 R½ 3 07. 5
DN20 R¾ 319.5
B
A B C
A
DN15 12 0 190 20 0
DN20 120 190 215
C
© Danfoss | 2022.01 | 7AQ336274304280en-000102

AB-QM 4.0 Flexo, DN 15-20
ІМПОРТЕР:
UA: ТОВ з ІІ «Данфосс ТОВ», вул. Вікентія Хвойки, 15/15/6, м. Київ, 04080, Україна
/ AQ336274304280en-0001028 | © Danfoss | DCS-SGDPT/SI | 2022.01