Danfoss AVQM-WE, AVQMT-WE Data sheet

Data sheet

Flow and temperature controller with integrated control valve, WE-version (PN 25)

AVQM-WE - f low controller with integrated control valve AVQMT-WE - f low and temperature controller with integrated control valve

Description

AVQM-WE

DN 15-25

AVQM-WE is a self-acting flow controller with integrated control valve primarily for use in district heating systems. The controller closes when set max. flow is exceeded.

AVQMT-WE is a self-acting flow and temperature controller with integrated control valve primarily for use in district heating systems. The controller closes on rising temperature or when set max. flow is exceeded.

All controllers have special designed (pressure relieved) control valve insert.

AVQM-WE controller can be combined with Danfoss electrical actuators AMV(E) (and controlled by ECL electronic controllers).

AVQMT-WE controller can be combined with Danfoss electrical actuators AMV(E) (and controlled by ECL electronic controllers) and with AVT or STM thermostatic actuators.

The controllers have a control valve with adjustable flow restrictor, connection neck for electrical actuator, connection neck for thermostat (AVQMT-WE only), and an actuator with one control diaphragm.

AVQM-WE and AVQMT-WE are used together with Danfoss electrical actuators:

- AMV 150

- AMV(E) 10 1) / AMV(E) 20 / AMV(E) 30

- AMV(E) 13 1) / AMV(E) 23 / AMV(E) 33 with spring return function

- AMV 20 SL / AMV 23 SL / AMV 30 SL with stroke limitation

AMV 150 / AMV(E) 10 / AMV(E) 13 can be combined with D N 15

controller only.

AVQM-WE

DN 32-50

AVQMT-WE

DN 15-25

AVQM(T)-WE combined with AMV(E) 13, AMV(E) 23 (SL) or AMV(E) 33 (SL) has been approved according to DIN 32730. The controllers combined with AVT and STM thermostats are type-tested acc. to EN 14597.

Controllers combined with STM thermostats protect systems against exceeding temperatures.

Applications:

- District heating systems acc. to DIN 4747

- Heating systems acc. to EN 12828 (DIN 4751) and EN 12953-6 (DIN 4752)

- Water heating systems for drinking and industrial waters acc. to DIN 4753

Main data:

• DN 15-50

• kVS 2.5-25 m3/h

• PN 25

• Setting ranges:

- AVT thermostat:

−10 … 4 0 °C / 20 … 70 °C / 40 … 90 °C / 60 … 110 °C

and 10 … 45 °C / 35 … 70 °C / 60 …

- STM monitor 20

…

75 °C / 40

• Flow restrictor ∆p: 0.2 bar

• Temperature:

- Circulation water / glycolic water up to 30%: 2

…

150 °C

• Connections:

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

tailpieces)

- Flange

• Flow and return mounting.

…

95 °C / 30

100 °C / 85

…

110 °C

…

125 °C

Data sheet AVQM(T)-WE, (PN 25)

Ordering

Example 1 AVQM-WE controller: Flow controller with integrated control valve; DN 15; kVS 2.5; PN 25;

flow restrictor Δp 0.2 bar;

150 °C

; ext. thread

max

- 1× AVQM-WE DN 15 controller

Code No: 003H7080

Option:

- 1× Weld-on tailpieces

Code No: 003H6908

The controller will be delivered completely assembled, inclusive impulse tube bet ween valve and actuator. Electrical actuator AMV(E) must be ordered separately.

Example 2 AVT (or STM) / AVQMT-WE controller: Flow and temperature controller with integrated control valve, DN 15; kVS 2.5; PN 25; setting range 40 … 90 °C; flow restrictor Δp 0.2 bar; T

150 °C; ext. thread

max

- 1× AVQMT-WE DN 15 controller

Code No: 003H7084

- 1× AVT thermostatic actuator, 40 … 90 °C Code No: 065-0598

Option:

- 1× Weld-on tailpieces Code No: 003H6908

The controller AVQMT-WE will be delivered completely assembled, inclusive impulse tube between valve and actuator. Thermostatic actuator AVT will be delivered separately. Electrical actuator AMV(E) must be ordered separately. In case of safety temp. monitoring STM should be ordered instead of AV T.

AVQM-WE Controller

Picture

(mm)

20 6.3 G 1 A 003H7082 25 8.0 G 1¼ A 003H7083 32 12. 5 40 20 50 25

(m3/h)

AVQMT-WE Controller

Picture

(mm)

20 6.3 G 1 A 003H7086 25 8.0 G 1¼ A 003H7087

(m3/h)

AVT Thermostatic actuator

Picture For valves

conic male threa d EN 10226 -1

without imme rsion pocket

DN 15-2 5

Setting range

–10 … +40

20 … 70 065-0597 40 … 90 065-0598

60 … 110 065-0599

10 … 45

35 … 70 065-0605 60 … 100 065-0606 85 … 12 5 065-0607

STM Safety temperature monitor (actuator)

Picture For valves

DN 15-2 5

conic male threa d EN 10226 -1

Limit range

30 … 11 0

20 … 75 065-0609

40 … 95 065-0610

2.5

4.0 003H7081

2.5

4.0 003H7085

(°C)

Cylindr. ext. thread acc. to

Temperature sensor with brass immersion

Connection Code No.

G ¾ A

ISO 228/1

Flanges PN 25, acc. to EN 1092-2

Connection Code No.

G ¾ A

ISO 228/1

pocket, length, connection

170 mm, R ½

255 mm, R ¾

pocket, length, connection

210 mm, R ¾

1) 2)

003H7080

003H7088 003H7089 003H7090

003H7084

Code No.

065-0596

065-0604

Code No.

065-0608

Accessories for valves

Picture Type designation DN Connection Code No.

Weld-on tailpieces

External thread tailpieces

Flange tailpieces

20 003H6909 25 00 3H6910

Conical ex t. thread

20 R ¾ 003H6903 25 R 1 003H6904

20 003H6 916 25 0 03H6 917

acc. to

EN 10226-1

Flanges PN 25, acc. to EN 1092-2

R ½ 003H6902

003H6908

003H6 915

2 | AI083486477108en-AT0501 © Danfoss | 2021.04

Data sheet AVQM(T)-WE, (PN 25)

Ordering (continuous)

Example 3 STM / AVT / AVQMT-WE controller: Flow and temperature controller with safety temperature monitor and integrated control valve, DN 15, kVS 2.5; PN 25; setting range 40 … 90 °C; limit range 30 … 110 °C; flow restrictor Δp 0.2 bar; T

150 °C; ext. thread

max

- 1× AVQMT-WE DN 15 controller Code No: 003H6787

- 1× AVT thermostatic actuator, 40 … 90 °C Code No: 065-0598

- 1× STM monitor, 30 … 110 °C Code No: 065-0608

- 1× K2 Combination piece Code No: 003H6855

Option:

- 1× Weld-on tailpieces

Code No: 003H6908

The controller AVQMT-WE will be delivered completely assembled, inclusive impulse tube between valve and actuator. Combination piece K2, thermostats AVT and STM will be delivered separately. Electrical actuator AMV(E) must be ordered separately.

Accessories for thermostats

Picture Type designation PN

Immersion pocket 25

Combination piece K2 003H6855

Not for AVT the rmostatic actuator code numb ers: 065-0604, 065-0605, 065-0606, 065-0607

For

thermostats

AVT

STM

Material Code No.

Stainless steel, mat. No. 1.4571 06 5-4 415

Stainless steel, mat. No. 1.4435 065 -4417

Service kits

Picture Type designation DN

Valve insert

Control valve insert

Type designation For controller

Actuator

AVQM-WE

AVQMT-WE 003H6843

20 6.3 003H6865 25 8.0 003H6866

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

20 6.3 003H6990 25 8.0 003H6991

32 / 40 / 50 12.5 / 20 / 25 0 03H6992

Brass 06 5-4 414

Brass

(m3/h)

2.5 003H6863

4.0 003H6864

2.5 003H6988

4.0 003H6989

∆p settin range

(bar)

0.2

065- 4416

Code No.

003H6 841

Housing of sensor stuffing box

For AVQM-WE and AVQMT-WE controler s

for sensors

AVT R ½ 065-4420

AVT R ¾ 065- 4421

AI083486477108en-AT0501 | 3© Danfoss | 2021.04

Data sheet AVQM(T)-WE, (PN 25)

Technical data

Valve

Nominal diameter DN 15 20 25 32 40 50

kVS value of dp controller Range of

max. flow setting

p bar

MCV

= 0.2

Avalib le p required for Q

m3/h

min

max

bar 0.6 0.6 0.5 0.5 0.8 0.8/0.61)0.8/0.6

2.5 4.0 6.3 8.0 12. 5 16/2 01)20/25

0.07 0. 07 0.16 0.2 0.4 0.8 0.8

1.6 2.4 3.5 4.5 10 10.5/121)12/ 14

Stroke mm 5 7 10 Control valve authority 1 (100%) in the range of flow setting Control characteristic Logarithmic Cavitation factor z ≥ 0.6 ≥ 0.55 ≥ 0.5 Leakage acc. to standard IEC 534 % of k

≤ 0.02 ≤ 0.05 Nominal pressure PN 25 Min. differential pressure Max. differential pressure 20 16

bar

see remark

Medium Circulation water / glycolic water up to 30% Medium pH Min. 7, max. 10 Medium temperature

Connections

valve External thread Flange tailpieces Weld-on, ex ternal thread and flange ⁄

C 2 … 150

Materials

Ductile iron

Valve body Red bronze CuSn5ZnPb (Rg5)

EN-GJS-400-18-LT

(GGG 40.3) Valve seat Stainless steel, mat. No. 1.4571 Valve cone Dezincing free brass CuZn36Pb2As Sealing DP, CV EPDM

Pressure relieve system

Control valve insert Valve insert

Piston

Note:

DP - diff. pressu re controller, MCV - control valve

Flanged version

For flows smal ler than Q

max

min











 



MCV





4 | AI083486477108en-AT0501 © Danfoss | 2021.04

Data sheet AVQM(T)-WE, (PN 25)

Technical data (continuous)

Actuator

Typ e AVQM -WE, AVQMT-WE

Actuator size cm Nominal pressure PN 25 Flow restrictor diﬀ. pressure bar 0.2

Materials

Housing

Upper housing of actuator Stainless steel, mat. No.1.4301

Lower housing of actuator Dezincing free brass CuZn36Pb2As Diaphragm EPDM Impulse tube Copper tube Ø 6 × 1 mm

AVT Thermostatic actuator

Setting range X

°C

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

mm/°K Max. adm. temperature at sensor 50 °C above maximum setpoint Max. amb. temperature at thermostat °C 0 … 70 Nominal pressure sensor Nominal pressure immerison pocket

PN 25

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

Materials

Temperature sensor Cooper

Ms design Brass, nickel-plated

Immersion pocket

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

for senso r 170

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

0.2 (170 mm); 0.7 (255 mm)

STM Safety temperature monitor (actuator)

Limit range X

Time constant T acc. to EN 14597 s max. 100 Gain K

Max. adm. temperature at sensor 80 °C above maximum setpoint Max. amb. temperature at thermostat °C 0 … 70 Nominal pressure sensor Nominal pressure immerison pocket Capillary tube length m 5

Materials

Temperature sensor Cooper

Immersion pocket

Ms design Brass, nickel-plated

Stainless steel design mat. No. 1.4435 Handle for temp. setting Polyamide, glass fiber-reinforced Scale carrier Polyamide

°C 20 … 75 / 40 … 95 / 30 … 110

mm/°K 0.3

PN 25

No Cavita tion noise

T=150 °C

T=130 °C

T=110 °C

T=70 ° C

Manometric Pressure downstrem [bar]

Cavitation noise

Cavitation area for cavitation factor z = 0.6

Manometric Pressure upstrem [bar]

AI083486477108en-AT0501 | 5© Danfoss | 2021.04

Data sheet AVQM(T)-WE, (PN 25)

Application principles

Combinations

AVQM-WE / AMV(E)

- Flow controller with electrical actuator

AVT / AVQMT-WE / AMV(E)

- Flow and temperature controller with electrical actuator

STM / AVQMT-WE / AMV(E)

- Flow controller with safety temperature monitor and electrical actuator

STM / AVT / AVQMT-WE / AMV(E)

- Flow and temperature controller with safety temperature monitor and electrical actuator

6 | AI083486477108en-AT0501 © Danfoss | 2021.04

Data sheet AVQM(T)-WE, (PN 25)

Installation positions

Flow and temperature controller with integrated control valve (with AVT or STM)

Up to medium temperature of 100 °C the controllers can be installed in any position.

Electrical actuator

Note!

Installation positions for electrical actuators AMV(E) have to be observed as well. Please see relevant Data sheet.

Temperature sensor

The place of installation must be chosen in a way that the temperature of the medium is directly taken without any delay. Avoid overheating of temperature sensor. The temperature sensor must be immersed into the medium in its full length.

Temperature sensors 170 mm R½

- The temperature sensor may be installed in any position.

For higher temperatures the controllers have to be installed in horizontal pipes only, with a pressure and temperature actuator oriented downwards.

Temperature sensor 255 mm R¾

- The temperature sensor must be installed as shown on the picture.

Pressure temperature diagram

② EN-GJS -400-18-LT (GGG 40. 3) PN 25 ① CuSn5ZnPb (Rg5) PN 25

Maximum allowed operating pressure as a function of medium temperature (according to EN 1092-3).

AI083486477108en-AT0501 | 7© Danfoss | 2021.04

Data sheet AVQM(T)-WE, (PN 25)

Design

1. Control valve insert

2. Adjustable flow restrictor

3. Valve body

4. Valve insert

5. Pressure relieved valve cone

6. Valve stem

7. Built-in spring for flow rate

control

8. Control drain

9. Control diaphragm

10. Union nut

11. Impulse tube

12. Upper casing of diaphragm

13. Lower casing of diaphragm

14. Thermostat AVT, STM

15. Thermostat stem

16. Bellows

17. Setting spring for

temperature control

18. Handle for temperature

setting, prepared for sealing

19. Scale carrier

20. Capillary tube

21. Flexible protected pipe (at

255mm only)

22. Temperature sensor

23. Immersion pocket

24. Sensor stuffing box

25. Housing of sensor stuffing

box

26. Safety spring

AVT 255

AV T 170 STM

AVQM-WE

STM

AVT / AVQMT-WE

8 | AI083486477108en-AT0501 © Danfoss | 2021.04

Data sheet AVQM(T)-WE, (PN 25)

Function Flow and temperature controller with integrated

control valve (AVQM-WE, AVQMT-WE)

Flow volume causes pressure drop across

the adjustable flow restrictor. Resulting pressures are being transferred through the impulse tubes and/or control drain in the actuator stem to the actuator chambers and act on control diaphragm for flow control. The flow restrictor diff. pressure is controlled and limited by means of built-in spring for flow control. Control valve closes on rising differential pressure and opens on falling differential pressure to control max flow.

Additionally the electrical actuator will

operate from zero to set max. flow according to the load.

Safety Temperature Monitor (STM)

- Function The safety temperature monitor is

proportional temperature controller which controls temperature and protects the system against exceeding temperatures. The valve cone is soft sealed and pressure relieved.

In case the temperature at the temperature

sensor exceeds the adjusted set point, safety temperature monitor interrupts energy supply by closing the valve. As soon as the temperature at the temperature sensor drops, the valve opens automatically.

Handle for limit setting can be sealed.

- Extended safety function

If there is a leakage in the area of the

temperature sensor, the capillary tube, or the thermostat, the valve closes by a safety spring in the safety thermostat. In this case safety temperature monitor (actuator) must be replaced.

- Physical Function Principle

The safety temperature monitor operates

in accordance with the liquid expansion principle. The temperature sensor, the capillary tube and the bellows are filled with liquid. As the temperature at the temperature sensor rises, the liquid expands, the thermostat stem moves out and closes the valve.

Temperature Controller (AVT)

- Function

By increasing of medium temperature control

valve cone moves towards the seat (valve closes), by decreasing of medium temperature valve cone moves away from the seat (valve opens).

Handle for temperature setting can be sealed.

- Physical Function Principle

Medium temperature changes cause pressure

changes in temperature sensor. Resulting pressure is being transferred through the capillary tube to the bellows. Bellows moves thermostat stem and opens or closes the valve.

Settings

Flow setting

Flow setting is being done by the adjustment of the flow restrictor position. The adjustment can be performed on the basis of flow adjustment diagram (see relevant instructions) and/or by the means of heat meter.

Temperature setting (AVT)

Temperature setting is being done by the adjustment of the setting spring for temperature control. The adjustment can be done by means of handle for temperature setting and/or temperature indicators.

Limit setting (STM) Limit setting is being done by the adjustment of the setting spring for temperature control. The adjustment can be done by means of handle for limit setting and/or temperature indicators.

Data sheet AVQM(T)-WE, (PN 25)

Adjustment diagram Temperature setting

Relation between scale numbers 1-5 and closing temperature.

Note: The values given are approximate

AVT Thermostat ... 170 mm

AVT Thermostat ... 255 mm

Note:

STM Safety temperature monitor (actuator): temperature scale is already written on the product

Data sheet AVQM(T)-WE, (PN 25)

Dimensions

155

121

AMV(E) 10 +

AVQM-WE (DN 15)

121

AMV(E) 13 +

AVQM-WE (DN 15)

Typ e DN 15 20 25 32 40 50

AMV(E) 10

AVQM -WE H*

AM V(E) 13 295 - - - - -

AMV(E) 2./3. 305 305 308 386 386 386

AM V 150 293 - - - - -

155

AMV(E) 2./3. +

AVQM-WE (DN 15-25)

292 - - - - -

AMV 150 +

AVQM-WE (DN 15-25)

AMV(E) 2./3. +

AVQM-WE (DN 32-50)

Ø125

AVQM (DN 15-25)

Typ e DN 15 20 25 32 40 50

AVQM -WE

L H 109 109 109 15 0 150 15 0 H

Valve weight kg 3.0 3.0 3.2 10.3 11.8 13.9

65 70 75 180 200 230

76 76 79 101 101 101

AVT / AVQMT-WE / AMV(E)

DN 15 20 25

AMV/ E 10

AM V/E 13 445 - -

AMV/E 2.,/3. 455 455 458

Ø125

AVQM (DN 32-50)

442 - -

Ø125

AVQMT (DN 15-25)

Typ e DN 15 20 25

AVQMT -WE

STM / AVQMT-WE / AMV(E)

DN 15 20 25

AMV/ E 10

AM V/E 13 489 - -

AMV/E 2.,/3. 499 499 502

L H 131 131 131 H

65 70 75

76 76 79

486 - -

Data sheet AVQM(T)-WE, (PN 25)

Adjustment diagram Temperature setting

Relation between scale numbers 1-5 and closing temperature.

Note: The values given are approximate

AVT Thermostat ... 170 mm

AVT Thermostat ... 255 mm

Note:

STM Safety temperature monitor (actuator): temperature scale is already written on the product

Data sheet AVQM(T)-WE, (PN 25)

Dimensions

155

121

AMV(E) 10 +

AVQM-WE (DN 15)

121

AMV(E) 13 +

AVQM-WE (DN 15)

Typ e DN 15 20 25 32 40 50

AMV(E) 10

AVQM -WE H*

AM V(E) 13 295 - - - - -

AMV(E) 2./3. 305 305 308 386 386 386

AM V 150 293 - - - - -

155

AMV(E) 2./3. +

AVQM-WE (DN 15-25)

292 - - - - -

AMV 150 +

AVQM-WE (DN 15-25)

AMV(E) 2./3. +

AVQM-WE (DN 32-50)

Ø125

AVQM (DN 15-25)

Typ e DN 15 20 25 32 40 50

AVQM -WE

L H 109 109 109 15 0 150 15 0 H

Valve weight kg 3.0 3.0 3.2 10 .3 11.8 13. 9

65 70 75 180 200 230

76 76 79 101 101 101

AVT / AVQMT-WE / AMV(E)

DN 15 20 25

AMV/ E 10

AM V/E 13 445 - -

AMV/E 2.,/3. 455 455 458

Ø125

AVQM (DN 32-50)

442 - -

Ø125

AVQMT (DN 15-25)

Typ e DN 15 20 25

AVQMT -WE

STM / AVQMT-WE / AMV(E)

DN 15 20 25

AMV/ E 10

AM V/E 13 489 - -

AMV/E 2.,/3. 499 499 502

L H 131 131 131 H

65 70 75

76 76 79

486 - -

Data sheet AVQM(T)-WE, (PN 25)

Danfoss AVQM-WE, AVQMT-WE Data sheet

Specifications and Main Features

Frequently Asked Questions

User Manual