Danfoss PCVP Data sheet

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 50-250

• kVS 32-630 m3/h

• PN 16, 25, 40

2)

3)

• 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 Technica l data and Ordering sections

2)

smaller DN on re quest

3)

PN 40 on special re quest

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 rat io

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)

Technical Data Main valve

Nominal diameter DN 50 65 80 100 125 15 0 200 250

kVS value m3/h 32 50 80 125 160 320 450 630

Cavitation factor z 0.5 0.5 0.45 0.4 0.35 0.3 0.2 0.2

2)

On request

3)

Stainless steel M . No. 1.4571

4)

EPDM

1)

Defined by pilot controller

Leakage acc. to standard IEC 534 ≤ 0.05% of k

Nominal pressure PN 16, 25, 40

Max. differential pressure

Min. differential pressure 0.5

PN 16

PN 25, 40 20

bar

16

Min. static pressure 1.5

Medium VF G 2(1) Circulation water/glycolic water up to 30%

Medium pH Min. 7, max. 10

Medium temperature

Connections

Weight

VFG 21 PN 16, 25, 40 2 … 150 °C

VFG 2 PN 16, 25, 40 2 … 200 °C

Main controller Flange

Pilot controller Ext. thread (weld- on tailpieces) or flange Flange

PN 16 /25

PN 40 30 32.5 60.5 69 141 253 333

kg 18

27. 5 30 58 68 115 185 323

Materials

PN 16 Grey cast iron EN-GJL-250 (GG-25)

Valve body

PN 25

Ductile cast iron EN-GJS -400-18-LT

(GGG-40.3)

PN 40 Cast steel EN-GP-240-GH (GS -C 25)

Valve seat Stainless steel M. No. 1.4021

Valve cone VF G 2(1) Stainless steel M. No. 1.4404

Sealing

Pressure relieve system Bellows

VFG 21 EPDM

VFG 2 Metal

3)

Main actuator

For main va lve DN 50 - 125 150 - 250

Actuator size cm

Max. operational pressure

Flow restrictor differential pressure p

Diff. pressure setting ranges

1)

Weight kg 11 24

Materials

Housing Stainless steel M. No. 1.0338

Control diaphragm EPDM

Impulse tube Stainless steel tube Ø10 × 0.8 mm

Nr. of throttle valves (mounted on impulse tubes) 1 2

2

250 630

25 16 , 25

1)

bar

b

0.2-1.0/0.3-2.0/1-5/3-12

Trottling element

For main va lve DN 50 - 125 150 - 250

Size of throttling element DN 25 40

Connections Welded end Flange

Max. operational pressure 25

Weight kg 3.2 6.6

Materials

Body material Red bronze, M. No. 2.1090

Impulse tube Stainless steel tube Ø10 × 0.8 mm

VS

15 12 10

2)

0.2/0.5

Cast steel EN-GP-240-GH

(GS-C 25)

2)

Stainless steel M. No.

1.4 313

Stainless steel M. No.

1.4021

Diaphragm4) (T

Bellows3) (T

max

max

150 °C )

300 °C)

2 | VD.JA.N3.02 © Danfoss | 2018.04

Data sheet PCVP - Pilot-controlled differential pressure controller (PN 16, 25, 40)

Ordering

Example 1:
Pilot-controlled differential pressure
controller; DN 100; kVS 125; PN 16;
setting range 0.2-1.0 bar; T
flange;

- 1× PCV-VFG 21 DN 100
Code No.: 0 03G157 3

- 1× AVP DN 25
Code No.: 0 03H 6319

- 1× Weld-on tailpieces DN 25
Code No.: 0 03H6910

- 1×

Mounting set for Impulse tube

Code No.: 0 03G159 9

1)

Contains accessories fo r remounting

the impulse tub e on the pilot controller
from internal co nnection (factory
delivered) to e xternal connectio n.

max

150 °C;

DN 50-125
PCV-VFG 21 - Main controller, throttling element, throttle valve, impulse tubes

DN 25

DN

(mm)

50 32

65 50 003G155 8

80 80 003G1559

100 125 003G1573

125 160 00 3G1574

50 32

65 50 003 G1568

80 80 003G15 69

100 125 0 03G152 3

125 160 003 G1524

Impulse tube

k

VS

(m3/h)

T

(°C)

max

PN Connection

150 16 Flange EN 1092-2 15

150 25 Flange EN 1092-2 15

Copper

Ø 6 × 1 × 3000 mm

Ø 10 × 1 × 1500 mm

Stainless steel Ø 10 × 0.8 × 1500 mm

Pilot controller AVP

DN

k

T

VS

max

(mm)

(m3/h)

PN Connection

(°C)

Cylindr. ext.

25 8.0 150 25

thread acc. to
DIN ISO 228/1

Weld-on tailpieces DN 25 003 H6910

Mounting set for impulse tube

1)

G 1¼ A

Δp setting range

(bar)

0. 2-1.0

0.3-2.0 003H6329

1-5

3-12

Δp

(bar)

max

Δp

(bar)

Code No.

003G1626

003G6707

max

Code No.

003 H6319

20

on request

003G1599

1) Contains accessories for remo unting
the impulse tub e on the pilot controller
from internal co nnection (factory
delivered) to e xternal connectio n.

DN 150-250
PCV-VFG 21 - Main controller, throttling element, throttle valves, impulse tubes

DN 40

DN

(mm)

150 320

200 450

250 630 003 G1507

150 320

200 450

250 630 003 G1527

Impulse tube

k

(m3/h)

T

VS

(°C)

max

PN Connection

16

150

25

Copper

Ø 6 × 1 × 3000 mm

Ø 10 × 1 × 1500 mm

Stainless steel Ø 10 × 0.8 × 1500 mm

Flange EN 1092-2

AVP

DN

k

T

VS

max

(mm)

(m3/h)

PN Connection

(°C)

40 20 150 25 Flange EN 1092-2

Mounting set for Impulse tube

1)

Δp setting range

(bar)

0. 2-1.0

0.3-2.0 003H6379

1-5

3-12

Δp

(bar)

max

Code No.

12 00 3G1505

10

003G1506

12 003G15 25

(bar)

max

003G152 6

Code No.

10

Δp

003H6373

16

on request

003G1599

VD.JA.N3.02 | 3© Danfoss | 2018.04

Data sheet PCVP - Pilot-controlled differential pressure controller (PN 16, 25, 40)

Ordering (cont inuous)

Example 2:
Pilot-controlled differential pressure
controller; DN 150; kVS 320; PN 16;
setting range 0.2-1.0 bar; T
flange;

- 1× PCV-VFG 21 DN 150
Code No.: 003G15 05

- 1× AVP DN 40
Code No.: 0 03H6373

- 1×

Mounting set for impulse tube

Code No.: 0 03G159 9

1)

At temperature s above 150 °C only with

seal pots (see Accesso ries)

max

150 °C;

DN 150-250
PCV-VFG 2 - Main controller, throttling element, throtlle valves, seal pots, impulse tubes

DN

k

T

VS

max

(mm)

(m3/h)

PN Connection

(°C)

150 320

200 450

16

250 630

150 320

25

200 450

DN 40

3.0 l (2 ×)

250 630

150 320

250 630

Impulse tube

200

40

Copper Ø 10 × 1 × 1500 mm

Stainless steel Ø 10 × 0.8 × 1500 mm

Flange EN 1092-2

VFG 2 Valves (metallic sealing cone)

DN

(mm)

k

(m3/h)

T

VS

(°C)

max.

Connections

PN 16 PN 25 PN 40

40 20 150 2001)Flanges acc. to EN 1092-1 065B2392 065B2405 06 5B2415

AFP / AFP-9 Actuators

Typ e

AFP

∆p setting range

(bar)

0.15 -1.5

0.1-0.7 00 3G1017

0.05-0.35 00 3G1018

Δp

(bar)

max

Code No.

12

10

on request

12

10

on request

12

10

on request200 450

Code No.

for DN Code No.

003 G1016

15-2 50

1)

Seal pot has to be us ed on impulse

tubes always w hen T

2)

Consist of a nipple , compression ring

and nut

3)

Impulse tube s on T>150 °C or PN> PN 16

≥ 150 °C

max

should be of stai nless steel

Accessories

Type designation Description Connections Code No.

Impulse tube set AF

Seal pot V1

Compression fitting

Throttle valve-PCV Regulating and shut-off device - 065Z1502

Service kits AVP

Type designation

Valve insert

Type designation

Actuator with adjustable
handle (AVP)

- 1× Copper tube Ø10 × 1 × 1500 mm

3)

- 1 × compression fitting for imp. tub e
connection to pipe (G ⁄)

- 003G1391

- 2 × socket

1)

2)

Capacit y 1 liter; with compression fittings
for imp. tube Ø10

For impulse tube Ø10 connections to
controller

DN

(mm)

k

VS

(m3/h)

- 003G1392

G ⁄ 003G1468

Code No.

AVP return AVP flow

1.6 003H6863 003H6871

15

2.5 003H6864 003H6872

4.0 003H6865 003H6873

20 6.3 003H6866 003 H6874

25 8 003H6867 003H6 875

32 / 40 / 50 12.5 / 20 / 25 003H6868 003H 6876

Δp setting range

(bar)

AVP return AVP flow

0. 2-1.0 003H6829 003H6834

0.3-2.0 003H6830 003H6835

4 | VD.JA.N3.02 © Danfoss | 2018.04