Danfoss AVT / VG, AVT / VGF Data sheet

Data sheet

TR(TW)700

Temperature controller for heating (PN 25)

AVT / VG - external thread
AVT / VGF - flange

Description

AVT / VGF

AVT / VG

The AVT / VG(F) controller is a self-acting
proportional temperature controller developed
primarily for domestic hot water (DHW)
production:

- Hot water tanks

- Storage charge systems

- Instantaneous domestic hot water production
(AVT 255 mm version)

It can be used in mixing loops and room heating
systems as well.

Controller closes on rising temperature.

The controller has a control valve VG(F),
thermostatic actuator and handle for
temperature setting. Thermostatic actuator
consist of bellows, capillary tube and sensor.

The temperature controller is type-tested
according to EN 14597 and can be used in
combinations with safety temperature monitors
STM and safety temperature limiters STL.

Main data:

• DN 15-50

• kVS 0.4 -25 m3/h

• PN 25

• Setting ranges:

−10 … 40 °C / 20 … 70 °C / 40 … 90 °C / 60 … 110 °C

and
10 … 45 °C / 35 … 70 °C / 60 … 100 °C / 85 … 125 °C

• Temperature:

- Circ. water / glycolic water up to 30 %:
2 … 150 °C

• Connections:

- Ext. thread (weld-on, thread and flange
tailpieces)

- Flange

• Flow and return mounting.

Ordering

Example:

Temperature controller, DN 15;
kVS 1.6 ; PN 25; setting range 40…90°C
T

150 °C; ext. thread

max

- 1× VG DN 15 valve
Code No: 065B0772

- 1× AVT thermostatic actuator,
40 … 90 °C

Code No: 065-0598

Option:

- 1× Weld-on tailpieces

Code No: 003H6908

© Danfoss | 2020.08

VG, VGF valve

;

Picture

DN k

(mm) (m3/h)

15

20 6.3 G 1 A 065B0775
25 8.0 G 1¼ A 065B0776
32 12.5 G 1¾ A 065B0777
40 16 G 2 A 065B0778
50 20 G 2½ A 065B0779
15 4.0
20 6.3 065B0781
25 8.0 065B0782
32 12.5 065B0783
40 20 065B0784
50 25 065B0785

VS

0.4

1.0 065B0771

1.6 065B0772

2.5 065B0773

4.0 065B07 74

Cylindrical external thread acc. to

Connection Code No.

065B0770

G ¾ A

ISO 228 / 1

065B0780

Flanges PN 25, acc. to EN 1092-2

AI173286467274en-000503 | 1

Data sheet Temperature controller AVT / VG(F) (PN 25)

Ordering (continuous)

AVT thermostatic actuator

Picture For valves

1)

conic male thre ad EN 10226

2)

without immersion pocket

DN 15-2 5

DN 32-50

DN 15-50

Setting range

(°C)

−10 … +4 0

20 … 70 065-0597
40 … 90 065-0598
60 … 110 065-0599

−10 … +4 0

20 … 70 065-0601
40 … 90 065-0602
60 … 110 065-0603

10 … 45

35 … 70 065-0605

60 … 100 065-0606
85 … 12 5 065-0607

Temperature sensor with brass immersion

pocket, length, connection

170 mm, R ½

210 mm, R ¾

255 mm, R ¾

1)

1)

1) 2)

Accessories for valves

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 065B2006
50 065B2007
15

R ½ 003H6902
20 R ¾ 003H6903
25 R 1 003H6904

Conical ex t. thread acc. to EN

32 R 1¼ 003H6905

10226-1

40 R 1½ 065B2004
50 R 2 065B2005
15
20 003H6 916

Flanges PN 25, acc. to EN 1092-2

25 0 03H6 917

Code No.

065-0596

065-0600

065-0604

003H6908

003H6 915

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Accessories for thermostats

Picture Type designation PN For valves Material Code No.

Brass 06 5-4 414

Brass

Immersion pocket 25

DN 15-2 5

DN 32-50

Stainless steel, mat. No. 1.4571 065- 4415

Stainless steel, mat. No. 1.4435 06 5-4 417
Combination piece K2 003H6855
Combination piece K3 003H6856

1)

Not for AV T thermostatic actuator code numbers: 065-0604, 065- 0605, 065-0606, 065-0607

Service kits

Picture Type designation DN (mm) kVS (m3/h) Co de No.

0.4 003H6869

1.0 003H6870

15

Valve insert

1.6 003H6871

2.5 003H6872

4.0 0 03H6873
20 6.3 003 H6874
25 8.0 003H6 875

32 / 40 / 50 125 / 16 / 20 / 25 003H6876

for sensors Code No.

Housing of sensor stuffing box

AVT 170 R 1/ 065- 4420

AVT 210, 255 R / 065-44 21

© Danfoss | 2020.08

065- 4416

1)

1)

1)

1)

Data sheet Temperature controller AVT / VG(F) (PN 25)

Technical data

Valves

Nominal diameter DN 15 20 25 32 40 50

k

value m3/h 0.4 1.0 1. 6 2.5 4.0 6.3 8 12.5 16 / 20 1)20 / 25

VS

Stroke mm 3 5 10
Control ratio > 1:50
Control characteristic linear
Cavitation factor z ≥ 0.6 ≥ 0.55 ≥ 0.5
Leakage acc. to standard IEC 534 % of k

VS

Nominal pressure PN 25
Max. differential pressure bar 20 16
Medium Circulation water / glycolic water up to 30 %
Medium pH Min. 7, ma x. 10
Medium temperature

°

C 2 … 150

valve

Connections

tailpieces

Materials

Valve body

thread Red bronze CuSn5ZnPb (Rg5)

flange - Ductile iron EN -GJS-400-18-LT (GGG 40.3)
Valve seat Stainless steel, mat. No. 1.4571
Valve cone Dezincing free brass CuZn36Pb2As
Sealing EPDM
Pressure relieve system Piston

1)

Flange valve bod y

≤ 0.02 ≤ 0.05

External thread

- Flange
Weld-on and external thread

Flange -

Ductile iron

EN-GJS-400-18-LT (GGG

40. 3)

1)

Application principles

Thermostatic actuator

Setting range X

s

°C

Time constant T acc. to EN 14597 s max. 50 (170 mm, 210 mm), max. 30 (255 mm)
Gain K

s

mm / °K
Max. adm. temperature at sensor 50 °C above maximum setpoint
Max. amb. temperature at sensor
Nominal pressure sensor
Nominal pressure immersion pocket

°C

PN 25

Capillary tube length 5 m (170 mm, 210 mm), 4 m (255 mm)

Materials

Temperature sensor Cooper

Ms design Brass, nickel-plated

Immersion pocket

1)

Stainless steel design Mat. No. 1.4571 (170 mm), mat. No. 1.4435 (210 mm)
Handle for temp. setting Polyamide, glass fiber-reinforced
Scale carrier Polyamide

1)

for sensor 170 and 210 mm

−10 … 40 / 20 … 70 / 40 … 90 / 60 … 110
10 … 45 / 35 … 70 / 60 … 100 / 85 … 125

0.2 (170 mm), 0.3 (210 mm), 0.7 (255 mm)

0 … 70

© Danfoss | 2020.08

AI173286467274en-000503 | 3

Data sheet Temperature controller AVT / VG(F) (PN 25)

Combinations

Example:
Temperature controller with safety
temperature monitor, DN 15; kVS 1.6 ;
PN 25; setting range 40 … 90 °C;
T

150 °C; ext. thread

max

- 1× VG DN 15 valve
Code No: 065B0772

- 1× AVT thermostatic actuator,
40 … 90 °C

Code No: 065-0598

- 1× STM thermostat, 30 … 110 °C

Code No: 065-0608

- 1× K2 combination piece

Code No: 003H6855

Products will b e delivereed separatly

Note:

For safety temperature monitor
STM / VG(F) data and safet y
temperature limiter STLV data see
relevant data sheet.

AVT / VG

- temperature controller

AVT / AVT / VG

- two temperature controllers

Installation positions

STM / AVT / VG

- temperature controller with
safety temperature monitor

Temperature controller
Temperature controller AVT / VG(F) can be
installed in any position.

STM / AVT / AVT / VG

- two temperature controllers with
safety temperature monitor

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© Danfoss | 2020.08