Danfoss AHQM Data sheet
Data sheet
Flow controller with integrated control valve (PN 16)
AHQM - return and flow mounting
Description
DN 15-32 DN 40, 50 DN 50-100
AHQM is a self-acting flow controller with
integrated control valve primarily for use in
district heating systems or in secondary district
heating systems as well. The controller closes
when set max. flow is exceeded.
In combination with Danfoss electrical actuators
AMV(E) can be controlled by ECL electronic
controllers.
The controllers have a control valve with
adjustable flow restrictor, connection neck for
electrical actuator, and an actuator with one
control diaphragm.
Controllers are used together with Danfoss
electrical actuators:
• DN 15-32 with
- AMV(E) 10
- AMV(E) 13 with spring return function
- AMV(E) 130, AMV(E) 140
- AMV(E) 130H, AMV(E) 140H with manual
operation
• DN 40-100 with
- AMV(E) 435
- AMV(E) 25 SD spring return function
(spring down)
AHQM, DN 15-32 combined with AMV(E) 13 has
been approved according to DIN EN 14597.
Main data:
• DN 15-100
• k
1,0 -90 m3/h
VS
• Flow range 0,035-38 m
3
/h
• PN 16
• Flow restrictor ∆p
- 0,12 bar for DN 15-20
:
b
- 0,14 bar for DN 25-32
- 0,2 bar for DN 40, 50
- 0,3 bar for DN 65-100
• Temperature:
- Circulation water / glycolic water up to 30%:
2 … 120 °C
• Connections:
- Ext. thread (weld-on, thread and flange
tailpieces)
- Flange
Ordering
Example AHQM controller:
Flow controller with integrated
control valve, DN 15, kVS 1,6; PN
16; flow restrictor Δp 0,12 bar;
T
120 °C; ext. thread
max
- 1× AHQM DN 15 controller
Code No.: 003L3594
Option:
- 1× Weld-on tailpieces
Code No.: 003H6908
Electrical actuator AMV(E) must be
ordered separately.
© Danfoss | 2016.07
AHQM Controller
Picture
DN k
(mm) (m
15
20 2,5
25 4,0
32 6,3
40 12, 5
50 20
50 20
65 50 003L3604
80 63 003L3605
100 90 003L3606
VS
3
/h)
1,0
1,25 003L3593
1,6 003L3594
Cylindr, ext, thread acc, to ISO 228/1
Connection Code No,
003L3592
G ¾ A
G 1 A
G 1¼ A
G 1¾ A
G 2 A
G 2⁄ A
Flange EN 1092-2
003L3595
003L3596
003L3597
003L3601
003L3602
003L3603
VD.LR.J5.02 | 1
Data sheet AHQM PN16
Ordering (continuous)
Technical data
Accessories
Picture Type designation DN Connection Code No.
15
003H6908
20 003H6909
Weld-on tailpieces
25 00 3H6910
32 0 03 H69 11
-
40 00 3H6912
50 0 03H6 913
15
R ½ 003H6902
20 R ¾ 003H6903
External thread tailpieces
25 R 1 003H6904
32 R 1¼ 003H6905
Conical ex t. thread acc. to
EN 1022 6-1
40 R 1⁄ 065F6061
50 R 2 065F6062
Flange tailpieces
15
20 003H 6916
Flanges PN 25, acc. to EN 1092-2
003H6915
25 0 03H6 917
Valve (thread version)
Nominal diameter DN 15 20 25 32 40 50
value
k
VS
Flow range
Q
min
1)
Q
nom
Available ∆p required for Q
m
2)
bar 0,3 0,4 0,5 0,4 0,4 0,4 0,6 0,4
max
Stroke mm 5,5 5 10
Control valve authority 1 (100 %) in the range of flow set ting
Control characteristic Linear
Leakage acc. to standard IEC 534 ≤ 0,05 % of k
Nominal pressure PN 16
Min. differential pressure
Max. differential pressure 4
bar
Medium Circulation water / glycolic water up to 30%
Medium pH Min, 7, max, 10
Medium temperature °C 2 … 120
Connections External thread
Materials
Valve body
Valve seat DP, CV St. steel, mat.No,1,4404
Valve cone DP St. steel, mat.No,1,4404
Valve cone CV
Sealing DP
Sealing CV Metal
1)
At differe ntial pressure across the controlle r Δp
2)
For flows smal ler than Q
3)
Depends on DN
->
p
max
min
Note:
DP - diff. pressu re controller, CV - control valve
1,0 1, 25 1,6 2,5 4,0 6,3 12,5 20
3
/h
0,035 0, 11 0,2 0,25 0,43 0,65 1,5 2,5
0,43 0,7 1, 0 1,2 2,2 3,4 7,5 12, 5
VS
see remark
2)
DZR CW602N (CuZn36Pb2As)
EPDM
≥ 0,5 bar
AHQM
2
Q
k
VS
p
MCV
Grey cast iron
EN-GJL-250 (GG25)
DZR CW602N
(CuZn36Pb2 As)
EPDM
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Data sheet AHQM PN16
2
Technical data (co ntinuous)
Actuator
For valve DN 15 20 25 32
Actuator size cm
2
8,5 13 20 32
Nominal pressure PN 16
Flow restrictor diff. pressure ∆p
bar
b
0,12 0,14 0,2
Materials
Housing*
DZR CW602N (CuZn36Pb2As)
Diaphragm EPDM
Impulse tube -
* Actuator ho using is part of valve body.
40 50
64
Grey cast iron
EN-GJL-250 (GG25)
AHQM (flange version)
Nominal diameter DN 50 65 80 100
k
value
VS
Flow range
Q
min
1)
Q
nom
Available ∆p required for Q
max
3
/h
m
2)
bar 0,7 0,5 0,5 0,5
Stroke mm 10 15
Control valve authority 1 (100 %) in the range of flow set ting
Control characteristic Linear
Leakage acc. to standard IEC 534 ≤ 0,05 % of k
Nominal pressure PN 16
Min. differential pressure
Max. differential pressure 4
bar
Medium Circulation water / glycolic water up to 30 %
Medium pH Min. 7, max. 10
Medium temperature °C 2 ... 120
Connections Flange
Materials
Valve body Grey cast iron EN-GJL-250 (GG25)
Valve seat DP, CV
Valve cone DP
Valve cone CV DZR CW602N (CuZn36Pb2As)
Sealing DP EPDM
Sealing CV Metal
1)
At differe ntial pressure across the controlle r Δp
2)
For flows smal ler than Q
3)
Depends on DN
->
p
max
Q
min
k
VS
Note:
DP - diff. pressu re controller, CV - control valve
20 50 63 90
2,5 4,0 5,6 7, 6
12, 5 20 28 38
VS
2)
St. steel, mat.No,1,4305
St. steel, mat.
No,1,4 404
≥ 0,5 bar
AHQM
p
MCV
see remark
VD.LR.J5.02
Actuator
For valve DN 50 65 80 100
Actuator size cm
Nominal pressure PN 16
Flow restrictor diff.
∆p
pressure
b
Materials
Housing
Diaphragm EPDM
Impulse tube -
2
64 143 169 227
bar 0,2 0,3
Grey cast iron EN-GJL-250 (GG25)
© Danfoss | 2016.07 | 3
Data sheet AHQM PN16
Application principles
- Indirectly connected heating
system
Return mounting Flow mounting
Installation positions DN 15-32
The controllers can be installed in horizontal
or vertical pipes with (connection neck for)
electrical actuator oriented upwards.
DN 40-100
The controllers can be installed with (connection
neck for) electrical actuator oriented horizontal
or upwards.
Electrical actuator
Note!
Installation positions for electrical actuators
AMV(E) have to be observed as well. Please see
relevant Data Sheet.
DN 15-32
DN 40, 50
DN 50 -100
4 | © Danfoss | 2016.07
VD.LR.J5.02
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