Data sheet
Pilot-controlled differential pressure controller (PN 16, 25, 40)
PCVP - flow and return mounting, adjustable setting
Description
Pilot-controlled differential pressure controller is a self-acting differential pressure
controller primarily for use in district heating, district cooling or in industrial systems as well. It can be flow and return mounted in applications with and without heat exchanger like large substations and distribution stations.
The controller consist of main controller, installed in main pipe, and pilot controller and with a throttling element, both installed in bypass.
Setting is done on pilot controler.
Throttle valve data can be found on page 10.
Main data1) :
•DN 50-2502)
•kVS 32-630 m3/h
•PN 16, 25, 403)
•Temperature:
-Circulation water/glycolic water up to 30%: 2 … 200°C
•Connections:
-Pilot controller:
ext. thread (weld-on tailpieces) or flange
-Main valve: flange
1)for details see Technical data and Ordering sections
2)smaller DN on request
3)PN 40 on special request
Features:
-Differential pressure controller
-Extremely high control ratio (see Tab.1) as a result of low pilot controller min. flow rate
(kVS value) and high flow rate (kVS) of the main valve
-Small overall dimensions comparing to standard design (especially height)
-Higher valve capacities for DN 150-250 comparing to standard design
-High control stability
-Smooth operation differential pressure controller
Tab. 1
DN |
Min. control ratio |
50 |
100 : 1 |
65 |
140 : 1 |
80 |
220 : 1 |
100 |
300 : 1 |
125 |
400 : 1 |
150 |
400 : 1 |
200 |
550 : 1 |
250 |
750 : 1 |
© Danfoss | 2018.04 |
VD.JA.N3.02 | 1 |
Data sheet |
PCVP - Pilot-controlled differential pressure controller (PN 16, 25, 40) |
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Technical Data
2)On request
3)Stainless steel M. No. 1.4571
4)EPDM
1) Defined by pilot controller
Main valve
Nominal diameter |
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DN |
50 |
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65 |
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80 |
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100 |
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125 |
150 |
200 |
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250 |
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kVS value |
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m3/h |
32 |
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50 |
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80 |
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125 |
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160 |
320 |
450 |
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630 |
Cavitation factor z |
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0.5 |
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0.5 |
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0.45 |
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0.4 |
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0.35 |
0.3 |
0.2 |
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0.2 |
Leakage acc. to standard IEC 534 |
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≤ 0.05% of kVS |
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Nominal pressure |
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PN |
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16, 25, 40 |
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Max. differential pressure |
PN 16 |
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16 |
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15 |
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12 |
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10 |
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PN 25, 40 |
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bar |
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20 |
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Min. differential pressure |
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0.5 |
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Min. static pressure |
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1.5 |
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Medium |
VFG 2(1) |
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Circulation water/glycolic water up to 30% |
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Medium pH |
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Min. 7, max. 10 |
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Medium temperature |
VFG 21 PN 16, 25, 40 |
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2 … 150 °C |
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VFG 2 PN 16, 25, 40 |
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2 … 200 °C2) |
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Connections |
Main controller |
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Flange |
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Pilot controller |
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Ext. thread (weld-on tailpieces) or flange |
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Flange |
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Weight |
PN 16 /25 |
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kg |
18 |
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27.5 |
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30 |
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58 |
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68 |
115 |
185 |
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323 |
PN 40 |
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30 |
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32.5 |
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60.5 |
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69 |
141 |
253 |
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333 |
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Materials |
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PN 16 |
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Grey cast iron EN-GJL-250 (GG-25) |
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Valve body |
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PN 25 |
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Ductile cast iron EN-GJS-400-18-LT |
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Cast steel EN-GP-240-GH |
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(GGG-40.3) |
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(GS-C 25) |
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PN 40 |
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Cast steel EN-GP-240-GH (GS-C 25)2) |
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Valve seat |
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Stainless steel M. No. 1.4021 |
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Stainless steel M. No. |
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1.4313 |
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Valve cone |
VFG 2(1) |
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Stainless steel M. No. 1.4404 |
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Stainless steel M. No. |
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1.4021 |
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Sealing |
VFG 21 |
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EPDM |
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VFG 2 |
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Metal |
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Pressure relieve system |
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Bellows |
3) |
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Diaphragm4) (T |
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150 °C) |
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Bellows3) (T |
300 °C) |
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max |
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max |
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Main actuator
For main valve |
DN |
50 - 125 |
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150 - 250 |
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Actuator size |
cm2 |
250 |
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630 |
Max. operational pressure |
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25 |
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16, 25 |
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bar |
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Flow restrictor differential pressure ∆pb1) |
0.2/0.5 |
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Diff. pressure setting ranges1) |
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0.2-1.0/0.3-2.0/1-5/3-12 |
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Weight |
kg |
11 |
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24 |
Materials |
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Housing |
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Stainless steel M. No. 1.0338 |
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Control diaphragm |
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EPDM |
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Impulse tube |
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Stainless steel tube Ø10 × 0.8 mm |
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Nr. of throttle valves (mounted on impulse tubes) |
1 |
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2 |
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Trottling element
For main valve |
DN |
50 - 125 |
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150 - 250 |
Size of throttling element |
DN |
25 |
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40 |
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Connections |
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Welded end |
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Flange |
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Max. operational pressure |
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25 |
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Weight |
kg |
3.2 |
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6.6 |
Materials |
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Body material |
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Red bronze, M. No. 2.1090 |
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Impulse tube |
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Stainless steel tube Ø10 × 0.8 mm |
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2 | VD.JA.N3.02 |
© Danfoss | 2018.04 |
Data sheet |
PCVP - Pilot-controlled differential pressure controller (PN 16, 25, 40) |
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Ordering
Example 1:
Pilot-controlled differential pressure controller; DN 100; kVS 125; PN 16;
setting range 0.2-1.0 bar; Tmax 150 °C; flange;
- 1× PCV-VFG 21 DN 100 Code No.: 003G1573
- 1× AVP DN 25
Code No.: 003H6319
- 1× Weld-on tailpieces DN 25 Code No.: 003H6910
- 1× Mounting set for Impulse tube Code No.: 003G1599
DN 50-125
PCV-VFG 21 - Main controller, throttling element, throttle valve, impulse tubes
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DN |
kVS |
Tmax |
PN |
Connection |
Δpmax |
Code No. |
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(mm) |
(m3/h) |
(°C) |
(bar) |
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50 |
32 |
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003G1626 |
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65 |
50 |
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003G1558 |
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80 |
80 |
150 |
16 |
Flange EN 1092-2 |
15 |
003G1559 |
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100 |
125 |
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003G1573 |
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125 |
160 |
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003G1574 |
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50 |
32 |
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003G6707 |
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65 |
50 |
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003G1568 |
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80 |
80 |
150 |
25 |
Flange EN 1092-2 |
15 |
003G1569 |
DN 25 |
100 |
125 |
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003G1523 |
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125 |
160 |
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003G1524 |
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Copper |
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Ø 6 × 1 × 3000 mm |
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Impulse tube |
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Ø 10 × 1 × 1500 mm |
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Stainless steel |
Ø 10 × 0.8 × 1500 mm |
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1)Contains accessories for remounting the impulse tube on the pilot controller from internal connection (factory delivered) to external connection.
Pilot controller AVP
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DN |
kVS |
Tmax |
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PN |
Connection |
Δp setting range |
Δpmax |
Code No. |
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(mm) |
(m3/h) |
(°C) |
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(bar) |
(bar) |
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Cylindr. ext. |
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0.2-1.0 |
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003H6319 |
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0.3-2.0 |
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003H6329 |
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25 |
8.0 |
150 |
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25 |
thread acc. to |
G 1¼ A |
20 |
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1-5 |
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DIN ISO 228/1 |
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on request |
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3-12 |
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Weld-on tailpieces DN 25 |
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003H6910 |
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Mounting set for impulse tube1) |
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003G1599 |
1) Contains accessories for remounting the impulse tube on the pilot controller from internal connection (factory delivered) to external connection.
DN 150-250
PCV-VFG 21 - Main controller, throttling element, throttle valves, impulse tubes
DN |
kVS |
Tmax |
PN |
Connection |
Δpmax |
Code No. |
(mm) |
(m3/h) |
(°C) |
(bar) |
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150 |
320 |
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12 |
003G1505 |
200 |
450 |
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16 |
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10 |
003G1506 |
250 |
630 |
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003G1507 |
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150 |
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Flange EN 1092-2 |
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150 |
320 |
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12 |
003G1525 |
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200 |
450 |
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25 |
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10 |
003G1526 |
250 |
630 |
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003G1527 |
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DN 40 |
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Ø 6 × 1 × 3000 mm |
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Copper |
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Impulse tube |
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Ø 10 × 1 × 1500 mm |
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Stainless steel |
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Ø 10 × 0.8 × 1500 mm |
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AVP
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DN |
kVS |
Tmax |
PN |
Connection |
Δp setting range |
Δpmax |
Code No. |
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(mm) |
(m3/h) |
(°C) |
(bar) |
(bar) |
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0.2-1.0 |
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003H6373 |
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40 |
20 |
150 |
25 |
Flange EN 1092-2 |
0.3-2.0 |
16 |
003H6379 |
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1-5 |
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on request |
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3-12 |
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Mounting set for Impulse tube1) |
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003G1599 |
© Danfoss | 2018.04 |
VD.JA.N3.02 | 3 |
Data sheet |
PCVP - Pilot-controlled differential pressure controller (PN 16, 25, 40) |
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Ordering (continuous)
Example 2:
Pilot-controlled differential pressure controller; DN 150; kVS 320; PN 16;
setting range 0.2-1.0 bar; Tmax 150 °C; flange;
-1× PCV-VFG 21 DN 150 Code No.: 003G1505
-1× AVP DN 40
Code No.: 003H6373
- 1× Mounting set for impulse tube Code No.: 003G1599
1)At temperatures above 150 °C only with seal pots (see Accessories)
DN 150-250
PCV-VFG 2 - Main controller, throttling element, throtlle valves, seal pots, impulse tubes
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DN |
kVS |
Tmax |
PN |
Connection |
Δpmax |
Code No. |
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(mm) |
(m3/h) |
(°C) |
(bar) |
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150 |
320 |
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12 |
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200 |
450 |
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16 |
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10 |
on request |
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250 |
630 |
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150 |
320 |
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12 |
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200 |
450 |
200 |
25 |
Flange EN 1092-2 |
10 |
on request |
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250 |
630 |
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150 |
320 |
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12 |
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DN 40 |
200 |
450 |
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40 |
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on request |
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10 |
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3.0 l (2×) |
250 |
630 |
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Impulse tube |
Copper |
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Ø 10 × 1 × 1500 mm |
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Stainless steel |
Ø 10 × 0.8 × 1500 mm |
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VFG 2 Valves (metallic sealing cone)
DN |
kVS |
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Tmax. |
Connections |
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Code No. |
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(mm) |
(m3/h) |
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(°C) |
PN 16 |
PN 25 |
PN 40 |
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40 |
20 |
150 |
2001) |
Flanges acc. to EN 1092-1 |
065B2392 |
065B2405 |
065B2415 |
AFP / AFP-9 Actuators
Type |
∆p setting range |
for DN |
Code No. |
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(bar) |
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0.15-1.5 |
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003G1016 |
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AFP |
0.1-0.7 |
15-250 |
003G1017 |
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0.05-0.35 |
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003G1018 |
1)Seal pot has to be used on impulse tubes always when Tmax ≥ 150 °C
2)Consist of a nipple, compression ring and nut
3)Impulse tubes on T>150 °C or PN> PN 16 should be of stainless steel
Accessories
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Type designation |
Description |
Connections |
Code No. |
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- 1× Copper tube Ø10 × 1 × 1500 mm |
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Impulse tube set AF3) |
- 1 × compression fitting for imp. tube |
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003G1391 |
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connection to pipe (G 1/4) |
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- 2 × socket |
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Seal pot V11) |
Capacity 1 liter; with compression fittings |
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003G1392 |
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for imp. tube Ø10 |
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Compression fitting2) |
For impulse tube Ø10 connections to |
G 1/4 |
003G1468 |
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controller |
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Throttle valve-PCV |
Regulating and shut-off device |
- |
065Z1502 |
Service kits AVP
Type designation |
DN |
kVS |
Code No. |
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(mm) |
(m3/h) |
AVP return |
AVP flow |
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1.6 |
003H6863 |
003H6871 |
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15 |
2.5 |
003H6864 |
003H6872 |
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Valve insert |
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4.0 |
003H6865 |
003H6873 |
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20 |
6.3 |
003H6866 |
003H6874 |
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25 |
8 |
003H6867 |
003H6875 |
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32 / 40 / 50 |
12.5 / 20 / 25 |
003H6868 |
003H6876 |
Type designation |
Δp setting range |
AVP return |
AVP flow |
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(bar) |
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Actuator with adjustable |
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0.2-1.0 |
003H6829 |
003H6834 |
handle (AVP) |
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0.3-2.0 |
003H6830 |
003H6835 |
4 | VD.JA.N3.02 |
© Danfoss | 2018.04 |