Danfoss AFPA, VFG2, VFG21 Data sheet

Data sheet

Diﬀerential pressure relief controller (PN 16, 25, 40) AFPA / VFG 2(1)

Description

Ordering

Example 1: Differential pressure relief controller; DN 15; kVS 4.0; PN 16; metallic sealing; setting range 0.15-1. 2 bar; T

150 °C; flange;

max

– 1× VFG 2 DN 15 valve Code no: 065B2388 – 1× AFPA actuator Code no: 003G – 2× Impulse tube set AF Code no: 003G1391

Products will be delivered separatly.

1021

The controller is a self-acting differential pressure relief controller primarily for use in district heating systems. The controller is normally closed and opens on rising differential pressure.

VFG 2 Valves (metallic sealing cone)

Picture

(mm)

15 4.0

20 6.3 065B2389 065B2402 06 5B2412

25 8.0 0 65B2390 065B2403 06 5B2413

32 16 065B2391 065B2404 065B2414

40 20 065B2392 065B2405 0 65B2 415

50 32 065B2393 065B2406 0 65B2416

65 50 065B2394 065B2407 065 B2417

80 80 065B2395 065B2408 0 65B2418

100 125 065B2396 065B2409 065 B2419

125 160 065B2397 06 5B2410 065B2420

150 280 065B2398

200 320 065B2399 – 065B2422

250 400 065B2400 – 065B2423

(m3/h)

Connections

Flanges acc. to

EN 1092-1

(°C)

150

The controller has a control valve, an actuator with one control diaphragm and spring for differential pressure setting.

Further on two valve versions are available: – VFG 2 with metallic sealing cone – VFG 21 with soft sealing cone

Main data: ∙ DN 15 -250 ∙ kVS 4.0-400 m3/h ∙ PN 16, 25, 40 ∙ Setting range:

– 0.05-0.3 bar / 0.1-0.6 bar / 0.15-1.2 bar /

0.5-2.5 bar / 1-5 bar

∙ Temperature:

– Circulation water / glycolic water up to 30 %:

2 … 150/200 °C

∙ Connections:

– Flange

max

Code No.

PN 16 PN 25 PN 40

065B2388

(°C)

200

150

max

Code No.

065B2401 06 5B 2411

– 065B2421

Impulse t ube set AF

150 280 –

200 320 – – On request

250 400 – – On request

at temperature s above 150 °C only with sea l pots (see Accessories)

200

– On request

VD.CA.N7.02 | 1

Data sheet Diﬀerential pressure relief controller AFPA/VFG 2(1) (PN 16, 25, 40)

Ordering (continuous)

Example 2: Differential pressure relief controller; DN 15; kVS 4.0; PN 25; metallic sealing; setting range 0.15-1.2 bar; T

200 °C; flange;

max

– 1× VFG 2 DN 15 valve Code no: 065 B2401 – 1× AFPA actuator Code no: 003G – 2× Impulse tube set AF Code no: 003G1391 – 2× Seal pot V1 Code no: 003G1392

Products will be delivered separatly.

Seal pot s V1

1021

Impulse tube

set AF

VFG 21 Valves (soft sealing cone)

Picture

Note: othe r valves available on special r equest.

(mm)

15 4.0

20 6.3 065B2503

25 8.0 065B2504

32 16 065B2505

40 20 065B2506

50 32 065B2507

65 50 065B2508

80 80 065B2509

100 125 0 65B2510

125 160 0 65 B25 11

150 280 065B25 12

200 320 065 B2513

250 400 06 5B2514

(m3/h)

max

(°C)

150 Flanges acc. to EN 1092-1

AFPA Actuators

Picture ∆p setting range (bar) for DN Code No.

1-5

0.5-2.5 003 G1020

0.15 -1.2

0.1-0.6 003G10 22

0.05-0.3 003 G1023

15-125

15-2 50

Connections

003 G1019

003 G1021

Code No.

PN 16

065B2502

Accessories

Picture Type designation Description Connections Code No.

– 1× Copper tube Ø10 × 1 × 1500 mm

Impulse tube set AF

Seal pot V1

Seal pot V2

Compression fitting

Shut off valve

Throttle valve 065B2909

Seal pot has to be us ed on impulse tubes always w hen T

Consist of a nipple , compression ring and nut

– 1 × compression fitting for imp. tube connection to pipe (G ⁄) – 2 × socket

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

Capacit y 3 liter; with compression fittings for imp. tube Ø10, for actuator size 630 cm

For impulse tube Ø10 connections to

controller

For impulse tube Ø10 –

≥ 150 °C

max

– 003G1391

– 003G1392

– 003G1403

G ⁄ 003G1468

00 3G1401

2 | © Danfoss | 2018.10

VD.CA.N7.02

Data sheet Diﬀerential pressure relief controller AFPA/VFG 2(1) (PN 16, 25, 40)

Ordering (continuous)

Technical data

Service kits

Picture Type designation

Valve insert

Stuffing cone (with EPDM O-rings) 003G1464

(mm)

15 4.0 065B2796 065B2790

20 6.3 065B2797 065B2791

25 8

32 16

40 20

50 32

65 50

80 80

100 125

125 160

150 280 065B2964 065B2966

250 400 065B2965 –

(m3/h)

Code No.

for VFG 2 for VFG 21

065B2798 065B2792

065B2799 065B2793

065B2800 0 65B2794

065B2801 065B2795

Valve

Nominal diameter DN 15 20 25 32 40 50 65 80 100 125 150 200 250

kVS value

Cavitation factor z 0.6 0.6 0.6 0. 55 0.55 0.5 0.5 0.45 0.4 0.35 0.3 0.2 0.2

Leakage acc. to standard IEC 534 (% of kVS)

Nominal pressure PN 16, 25, 40

Max. differential pressure

Media Circulation water / glycolic water up to 30 %

Media pH Min. 7, max. 10

Media temperature

Connections Flange

Materials

Valve body

Valve seat Stainless steel, mat. No. 1.4021

Valve cone Stainless steel, mat. No. 1.4404

Sealing

Pressure relieve system Bellows (Stainless steel, mat. No. 1.4571) Diaphragm (EPDM)

at temperature s above 150 °C only with sea l pots (see Accessories)

on request

PN 16

PN 25, 40 20

VFG 2

VFG 21 2 … 150

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

PN 25 Ductile iron EN-GJS-400(GGG-40.3)

PN 40 Cast steel GP240GH (GS-C 25)

VFG 2 Metal

VFG 21 EPDM

m3/h

4.0 6.3 8.0 16 20 32 50 80 125 160 280 320 400

VFG 2 ≤ 0.03 ≤ 0.05

VFG 21 ≤ 0.01

bar

°C

2 … 150 / 2 … 200

15 12 10

2 … 150 (200 2))

Stainless steel,

mat. No. 1.4313

Stainless steel,

mat . No. 1.4021

VD.CA.N7.02

Actuator

Typ e AFPA

Actuator size cm

Max. operating pressure bar 25 25 16

Diff. pressure setting ranges and spring colours

Materials

Actuator housing Steel, mat. No. 1.0338, zinc plated

Control diaphragm EPDM (Rolling; fibre enforced)

bar

80 250 630

silver yellow silver yellow yellow

1-5 0.5-2.5 0.15 -1.2 0.1-0.6 0.05-0.3

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