Danfoss AVQM Data sheet

Data sheet

Pressure independent control valve with integrated flow limiter AVQM (PN 16) - return and flow mounting

Description

AVQM is a self-acting flow controller with integrated control valve developed for the use in district heating / cooling systems. The controller prevents flow to exceed set max flow. In a combination with electrical actuators AMV(E) and ECL electronic controllers the flow and temperature can be controlled to achieve highest energy savings.

AVQM has a control valve with adjustable flow limiter, connection neck for electrical actuator and a pressure actuator with one control diaphragm.

Controllers are used together with Danfoss electrical actuators:

• AMV 150 1)

• 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 w ith DN 15

controller only.

AVQM combined with AMV(E) 13, AMV(E) 23 (SL) or AMV(E) 33 (SL) has been approved according to DIN 32730.

Main data:

• DN 15-32

• kVS 0.4-10 m3/h

• Flow range 0.015-6.0 m3/h

• PN 16

• Differential pressure over control valve ∆p

0.2 bar

MCV

• Temperature: Circulation water / glycolic water up to 30 % 2 … 150 °C

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

Ordering

Example: Flow controller with integrated control valvefor flow rate 0.7 m3/h; PN 16; T thread

150 °C; ext.

max

- 1× AVQM DN 15 controller

Code No: 003H 6735

Option:

- 1× Weld-on tailpieces

Code No: 003H690 8

AVQM Controller

Picture

DN Q

(mm) (m3/h) (m3/h)

20 3.5 6.3 25 4.5 8.0 32 6 10

max

0.18 0.4

0.4 1.0 003H 6734

0.9 1.6 003 H6735

1.6 2.5 003H6736

2.4 4.0 003H6737

Connection Code No.

Cylindr. ext. thread acc. to ISO 228 / 1

G ¾ A

G 1 A G 1¼ A G 1¾ A

003H 6733

003H6738

003H 6739

00 3H674 0

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

Data sheet AVQM (PN 16)

Ordering (continuous)

Accessories

Picture Type designation DN Connection Code No.

Weld-on tailpieces

External thread tailpieces

Flange tailpieces

20 003H6909 25 00 3H6910 32 0 03 H69 11 15 20 R ¾ 003H6903

Conical ex t. thread acc. to

25 R 1 003H6904 32 R 1¼ 003H6905 15 20 003H 6916 25 0 03H6 917

EN 10226 -1

Flanges PN 25, acc. to EN 1092-2

R ½ 003H6902

Service kits

Picture Type designation DN kVS (m3/h) Code No.

0.4 003H6861

1.0 003H6862

Valve insert

20 6.3 003H6996 25 8.0 32 10

Control valve insert

20 6.3 003H 6891 25 8.0 003H68 92 32 10 003H6795

1.6 003H6863

2.5 003H6864

4.0 003H6865

0.4 003H6886

1.0 0 03H6887

1.6 003H6888

2.5 003H6889

4.0 003H6890

003H6908

003H 6915

003H6867

Type designation Δp setting range (bar) Code No.

Actuator 0.2 003H6825

2 | VD.DB.V9.02 © Danfoss | 2019.02

Data sheet AVQM (PN 16)

Technical data

Valve

Nominal diameter DN 15 20 25 32

value of dp controller

Range of max. flow setting

p

= 0.2 bar

MCV

Available ∆p required for Q

max

min

max

m3/h

Stroke mm 5 7 Control valve authority 1 (100%) in the range of flow setting Control characteristic Logarithmic Cavitation factor z ≥ 0.6 ≥ 0.55 Leakage acc. to standard IEC 534 % of k Nominal pressure PN 25 Min. differential pressure Max. differential pressure 12 Medium Circulation water / glycolic water up to 30 % Medium pH Min. 7, max. 10 Medium temperature ºC 2 … 150

valve External thread

Connections

tailpieces

Materials

Valve body Red bronze CuSn5ZnPb (Rg5) Valve seat Stainless steel, mat. No. 1.4571 Valve cone Dezincing free brass CuZn36Pb2As Sealing DP EPDM Sealing MC V Metal

Pressure relieve system

Control valve insert Valve insert Piston

0.4 1.0 1.6 2.5 4.0 6.3 8.0 10

0. 015 0.02 0.03 0.07 0.07 0.16 0.2 0.16

0.18 0.4 0.9 1.6 2.4 3. 5 4.5 6.0

bar 0.4 0.4 0.5 0.6 0.6 0.5 0.5 0.6

bar

≤ 0.02 ≤ 0.05

see remark

Weld-on and external thread

Flange -

Note:

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

For flows smal ler than Q

max

min











 



MCV





Actuator

Typ e AVQM

Actuator size cm Nominal pressure PN 16 Diﬀerential pressure over MCV - motorized control valve bar 0.2

Materials

Housing Diaphragm EPDM

Impulse tube Copper tube Ø 6 × 1 mm

No Cavitation noise

T=150 °C

T=130 °C

T=80 °C

Cavitation noise

Zinc plated, DIN 1624, No. 1.0338

Manometric Pressure downstrem [bar]

Manometric Pressure upstrem [bar]

Cavitation area for cavitation factor z=0.6

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