Danfoss AVPB, AVPB-F Data sheet
Data sheet
Differential pressure controller with flow limitation (PN 25)
AVPB - return mounting, adjustable setting
AVPB-F - return mounting, fixed setting
Description
Ordering
Example:
Differential pressure controller
with flow limitation; DN 15; kVS 1.6;
PN 25; setting range 0.2-1.0 bar;
t
150 °C; ext. thread
max
- 1× AVPB DN 15 controller
Code No: 003H6444
- 1× Impulse tube set AV, R ⁄
Code No: 003H6852
Option:
- 1× Weld-on tailpieces
Code No: 003H690 8
The controller will be delivered
completely assembled. External
impulse tube (AV) must be
ordered separately.
AVPB Controller
Picture
AVPB (-F) is a self-acting differential pressure
controller with flow limitation primarily for use in
district heating systems. The controller closes on
rising differential pressure or when set max. flow
is exceeded.
The controller has a control valve with adjustable
flow restrictor, an actuator with one control
diaphragm and handle for differential pressure
setting (fixed setting version is without handle).
Main data:
• DN 15-50
• kVS 1.6 -25 m3/h
• Flow range 0.03-15 m3/h
• PN 25
•
Setting range (AVPB): 0.2-1.0 bar/0.3-2.0 bar
• Fixed setting (AVPB-F): 0.5 bar
• Temperature:
Circulation water/glycolic water up to 30%:
2 … 150 °C
• Connections:
-
Ext. thread (weld-on, thread and flange tailpieces)
- Flange
DN k
VS
(mm) (m3/h) (bar)
1.6
15
2.5 003H6445 003H6453
4.0 003H6446 003H6454
20 6.3 G 1 A 003H6447 003H6455
25 8.0 G 1¼ A 003H6448 003H6456
32 12. 5 G 1¾ A 003H6449 003H6457
40 16 G 2 A 003H6450 003H6458
50 20 G 2½ A 003H6451 003H6459
32 12. 5
40 20 003H6469 -
50 25 003H6470 -
Connection
Cylindr.
ext.
thread
acc. to
ISO 228/1
Flanges PN 25,
acc. to EN 1092-2
G ¾ A
∆p setting range
0. 2-1.0
Code No.
003H6444
003H6468 -
∆p setting range
(bar)
0.3-2.0
Code No.
003H6452
© Danfoss | 2016.09
Note: other controllers available on special request.
VD.DB.P6.02 | 1
Data sheet Differential pressure controller with flow limitation AVPB(-F) (PN 25)
Ordering (continuous)
AVPB-F Controller
Picture
DN k
(mm)
VS
(m3/h)
1.6
15
2.5 003H6461
4.0 003H6462
ext. thread acc. to
20 6.3 G 1 A 003H6463
25 8.0 G 1¼ A 003H6464
32 12. 5
40 20 003H6475
Flanges PN 25, acc. to EN 1092-2
50 25 003H6476
Note: other controllers available on special request.
Connection
Cylindr.
ISO 228/1
G ¾ A
∆p setting range
(bar)
0.5
Accessories
Picture Type designation DN Connection Code No.
15
20 003H6909
Weld-on tailpieces
External thread tailpieces
Flange tailpieces
25 00 3H6910
32 0 03 H69 11
-
40 00 3H6912
50 0 03H6 913
15
R ½ 003H6902
20 R ¾ 003H6903
25 R 1 003H6904
Conical ex t. thread acc. to
EN 1022 6-1
32 R 1¼ 003H6905
40 R 1⁄
50 R 2
15
Flanges PN 25, acc. to EN 1092-2
20 003H 6916
25 0 03H6 917
Code No.
003H6460
003H6474
003H6908
065B2004
065B2005
003H6915
Description:
-
Impulse tube set AV
1)
10 compression f ittings for imp. tube connection to pipe, Ø6 × 1 mm R ⁄ 003H6857
1)
10 compression f ittings for imp. tube connection to pipe, Ø6 × 1 mm R ⁄ 003H6858
1)
10 compression f ittings for imp. tube connection to pipe, Ø6 × 1 mm R ⁄ 003H6859
1)
10 compression f ittings for imp. tube connection to actuator, Ø6 × 1 mm G ⁄ 0 03H6931
1x copper tube Ø6 × 1 × 150 0 mm
- 1x compression fitting1)
for imp.
Shut off valve Ø6 mm 003H0276
1)
Compression f itting consists of a nippl e, compression ring and nut.
tube connection to pipe Ø6 × 1 mm
R ⁄ 003H6852
R ⁄ 003H6853
R ⁄ 003H6854
2 | © Danfoss | 2016.09
VD.DB.P6.02
Data sheet Differential pressure controller with flow limitation AVPB(-F) (PN 25)
Ordering (continuous)
Technical data
Service kits
k
Picture Type designation DN
VS
(m3/h)
Code No.
1.6 003H6863
Valve insert
15
20 6.3 003H6866
25
2.5 003H6864
4.0 003H6865
8.0 003H6867
32/4 0/50 12.5/16/20/25 003H6868
Type designation
Actuator with adjustable handle (AVPB)
Δp setting range
(bar)
0. 2-1.0 003H6829
0.3-2.0 003H6830
Code No.
Actuator without adjustable handle (AVPB-F) 0.5 003H6 841
Valve
Nominal diameter DN 15 20 25 32 40 50
kVS value
Range of max.
flow setting
∆pb 1) = 0.2 bar
from 0.03 0.07 0.07 0.16 0.2 0.4 0.8 0.8
to 0.86 1. 4 2.2 3.0 3.5 8.0 10 12
3)
or to
Cavitation factor z ≥ 0.6 ≥ 0. 55 ≥ 0.5
Leakage acc. to standard IEC 534 % of k
Nominal pressure PN 25
Min. differential pressure
Max. differential pressure 20 16
Medium Circulation water/glycolic water up to 30%
Medium pH Min. 7, max. 10
Medium temperature °C 2 … 150
valve External thread Ext. thread and flange
Connections
tailpieces
Materials
Valve body
thread Red bronze CuSn5ZnPb (Rg5)
flange -
Valve seat Stainless steel, mat. No. 1.4571
Valve cone Dezincing free brass CuZn36Pb2As
Sealing EPDM
Pressure relieve system
1)
∆pb - differe ntial pressure over flow rest rictor
2)
Depends o n the flow rate and valve kVS ; For Q
3)
Higher ma x flow are achieved at highe r differential pressu res over AVPB(-F) controller. In general a t p > 1-1.5 b ar
4)
Flange valve bod y
1.6 2.5 4.0 6.3 8.0 12.5 16/204)20/25
m3/h
0.9 1.6 2.4 3.5 4.5 10 12 15
VS
bar
≤ 0.02 ≤ 0.05
see remark
2)
Weld-on and external thread
Flange -
EN-GJS-400-18-LT (GGG 40.3)
Piston
= Q
-> ∆p
set
max
≥ 0.5 bar; For Q
min
< Q
->
set
p
max
min
2
Q
k
VS
Ductile iron
p
b
4)
VD.DB.P6.02
Actuator
Typ e AVPB AVPB -F
Actuator size cm
Nominal pressure PN 25
Diff. pressure setting ranges and
spring colours
Materials
Actuator
housing
Upper casing of diaphragm
Lower casing of diaphragm Dezincing free brass CuZn36Pb2As
Diaphragm EPDM
Impulse tube Copper tube Ø6 × 1 mm
bar
2
54
0. 2-1.0 0.3-2.0 0.5
yellow red (fixed setting)
Stainless steel, mat. No.1.4301
© Danfoss | 2016.09 | 3
Data sheet Differential pressure controller with flow limitation AVPB(-F) (PN 25)
Application principles
The controller must be installed in
the return pipe only.
Direct-connected heating system Indirectly connected heating system
Installation positions Up to medium temperature of 100 °C the
controllers can be installed in any position.
Pressure temperature
diagram
For higher temperatures the controllers have
to be installed in horizontal pipes only, with a
pressure actuator oriented downwards.
EN-GJS-400-18-LT (GGG 40.3) PN 25
CuSn5ZnPb (Rg5) PN 25
4 | © Danfoss | 2016.09
Maximum allowed operating pressure as a func tion of medium temperature (according to EN 1092-2 and EN 1092-3).
VD.DB.P6.02
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