Danfoss ASV-PV DN 50, ASV-PV DN 65-100, MSV-F2 DN 50-100 Data sheet

Data sheet

Automatic balancing valves

ASV-PV DN 50 -100 (3rd gen.)

Description / Application

ASV-PV

DN 50

ASV balancing valves are used for dynamic hydronic balance in heating and cooling systems. One of the major challenges in heating and cooling systems is a lack of good hydronic balancing, caused by differential pressure, which is changing constantly and unpredictably in the system. This often results in complaints about poor indoor comfort, noise and high energy bills.

ASV automatic balancing valves ensure an optimal pressure differential for control valves as well as the correct flow within the individual risers at all times. The ASV automatically creates an optimal hydronic balance within the installation, whether under full or partial load. This balance is never disrupted.

F low limitation

By using combination of pressure controller ASV and settable terminal’s unit valve, f low limitation is established.

F low limitation for each terminal unit prevents underf lows on distant units and overf lows on others thus allows efficient pumping.

Lower noise emission

Differential pressure limitation provides the pressure over the control valve not to increase at partial loads thus noise emission will be lower. (This is the reason why DIN 18380 requires control of differential pressure by partial load.)

No balancing method needed

F low limitation is achieved by adjusting each hydronic loop separately without inf luencing others, which consequently results in one time adjusting process. No special balancing method is needed so commisioning cost can be saved.

ASV-PV

DN 65-10 0

Partner valve

MSV-F2

DN 50-10 0

Control valve authority

Controlling differential pressure over the control valve means that authority is high – which allows an accurate and stable control as well as energy saving.

Zone balancing

By installing the ASV sets you can divide the piping system in pressure independent zones. This allows a gradual connection of zones to the main in new constructions or at renovation without using an additional balancing method. There is no need to perform a new commissioning every time the system is changed because the hydronic balance is done automatically.

ASV-PV valves are settable in different ranges:

• 5-25 kPa setting is mostly used for radiator application,

• 20-40 kPa setting is used for fan coil, chilled beam and f lat station applications,

• 35-75 kPa setting is used for f lat station and fan coil, chilled beam application,

• 60-100 kPa setting is used for large terminal unit application (air handling units, fan coils, etc.).

Using ASV valves it is possible to optimize pump head while independent pressure zones allow to keep authority of terminal unit’s valve high.

ASV balancing valves are designed to guarantee high quality of the automatic balancing by:

- a pressure released cone,

- an adapted membrane for every valve dimension which provide constant quality performance for all sizes,

- spring with linear characteristic that makes setting required ∆p easy.

VD.A6.E7.02 | 1

Data sheet Automatic balancing valves ASV

Description / Application

(continuous)

ASV valves DN 50 is supplied with external thread only. Threaded or weld tail pieces can be supplied as an accessory. Dimensions DN 65-100 are supplied as f langed valves.

ASV balancing valves have integrated service functions such as shut-off.

ASV-PV can be equipped with plug for f low measuring. In that case measuring plugs need to be ordered separately and

There are two basic configurations when using ASV partner valves (MSV-F2):

• partner valve outside the control loop (Fig. 1). Recommended configuration: it results in best performance since whole controlled pressure range is available to the riser. Flow limitation is done on each terminal unit in the riser.

MSV-F2, by connecting impulse tube to downflow test plug.

mounted on the valve as follows:

• on top of drain connection (DN 50),

• on the f lange connection before the valve is filled with water (DN 65-100).

ASV-PV valves are to be mounted in return pipe, in combination with partner valves mounted in f low pipe. As a partner valve MSV-F2 is recommended.

• partner valve inside control loop (Fig. 2).

Offers flow limitation on the riser however

part of the controlled pressure range is used by pressure drop on partner valve (pi). It is recommended when flow limitation on each terminal units is not possible.

MSV-F2, by connecting impulse tube to up-flow test plug.

Fig. 2 Setting of ASV-PV = priser + piFig. 1 Setting of ASV-PV = ∆priser

Fig. 3 ASV in riser / typical heating application (general e xample)

ASV valves are to be used in heating systems to control the differential pressure in risers. To limit the f low for every radiator, the thermostatic radiator valve with pre-setting facilities (feature) is used together with a constant pressure provided by the ASV, thus providing balanced heat distribution.

Controlling differential pressure over the riser means also that the valve authority over the thermostatic radiator valves is high – which allows an accurate and stable temperature control and saves energy.

2 | VD.A6.E7.02

Data sheet Automatic balancing valves ASV

Description / Application

(continuous)

Fig. 4 ASV in manifold for f loor heating system

ASV valves are to be used in f loor heating systems. To limit the f low for every loop valves with an integrated f low limiting or presetting function should be used together with a constant pressure provided by an ASV-PV valve.

Fig. 5 ASV with fan coil

The ASV valves are to be used in systems with fan coils, induction devices and air-heaters to secure an automatic hydronic balance by the means of differential pressure control in branches or at every coil.

ASV-PV valves can control the differential pressure in several ranges if different pressure is needed.

Fig. 6 ASV with air handling unit

The ASV valves are to be used in air handling units to secure an automatic hydronic balance by the means of differential pressure control at every unit.

VD.A6.E7.02 | 3

Data sheet Automatic balancing valves ASV

Sizing

Thread

F lange

≤ Q ≤ Q

min

Fig. 7

Column diagram for sizing ASV valves at ∆ pv = 10 kPa. For different ∆pv values use diagram A in Appendix.

We recommend to size the diameter of ASV-PV valves by using Fig 7. Maximum f low rates are based on 10 kPa differential pressure over the valve which allows effcient pumping and saves energy.

10 kPa

Connection between valves size and pipe size

Kv values per particular dimension were designed to cover f low range according to VDI 2073 with water velocity of up 0.8 m/s, at differential pressure of 10 kPa over the valve. As long as the

water velocity in the pipe is between 0.3 and 0.8 After ASV-PV valves have been sized the same dimension of partner valve MSV-F2 valve should

m/s dimension of the valve should be equal to

pipe dimension. be selected.

This rule is derived out of the fact that Kv values

Example:

per particular dimension were designed to cover

f low range according to VDI 2073 at differential Given:

pressure of 10 kPa over the valve. Pipe f low 3000 l/h, pipes DN 50

Solution: Horizontal line intersects the column for the valve DN 50 which can therefore be selected as required size.

For detailed sizing see examples on pages 9. For different pv (differential pressure over the valve) see diagrams in Appendix A.

4 | VD.A6.E7.02

Data sheet Automatic balancing valves ASV

Ordering ASV-PV balancing valve, inclusive in the box:

2.5 m impulse tube (G ⁄ A) drain connection (G ⁄ A) and adapter 0 03L8151

Typ e DN

(m⁄h) (kPa)

50 20

ASV-PV balancing valve, inclusive in the box:

2.5 m impulse tube (G ⁄ A), adapter ASV large 003Z0691 and 003L8151

Typ e DN

(m⁄h) (kPa)

65 48

80 63 003Z0624

100 76.0 003Z0625

65 48

80 63 003Z0634

100 76.0 003Z0635

65 48

80 63 003Z0644

100 76.0 003Z0645

MSV-F2 Partner valve with shut-off, flowlimitation and test plugs.

Typ e DN

15 3.1

20 6.3 003Z1086

25 9.0 00 3Z1087

32 15. 5 003Z1088

40 32.3 00 3Z1089

50 53.8 0 03Z10 61

65 93.4 003Z106 2

80 122 .3 003Z1063

100 200.0 003Z1064

For more inform ation see MSV-F2 datasheeet

(m⁄h)

G 2 ⁄

∆p setting range

5-25 003Z0 611

20-40 003Z0621

35-75 003 Z0631

60 -100 003Z0641

∆p setting range

20-40

35-75

60 -100

DN20

Code No.

003Z0623

003Z0633

003Z0643

Code No.

003Z1085

Connection

External

thread

ISO 228/1

Connection

F lange

EN 10 92-2

MAX.

(°C) (bar)

130 16

Accessories and spare parts

Description Comments/connection Code No.

Shut off knob for MSV-F2

Differential pressure measuring connector

DN 50 00 3Z0179

DN 65 -100 0 03Z0180

For drain connection 003L8143

1.5 m 00 3L8152

Impulse tube, with O-rings

2.5 m 003Z0690

5 m 00 3L8153

Plastic impulse tube with connectors and adapters

Adapter large ASV

Plug for connecting impulse tube

O-ring for impulse tube

Recommende d for use with MSV-F2, connected to me asuring hole, it allows conne ction of impulse

tube from ASV w hile retaining measurement f unctionality.

Recommended for use wit h MSV-F2, connected to measuring h ole. Can also be used for connec ting

impulse tube d irectly on the pipe.

Set of 10 pieces.

Total 15 meter of impulse tu be

For making set of 10 pieces 4)003Z0689

G ¼-R ¼; G ⁄ 003Z0691

G ⁄-R ¼ 003L8151

2.90 × 1.7 8 00 3L8175

Fitting

For valves with external thread Danfoss offers threaded or welded tailpieces as accessory.

Materials

Nut brass

Tailpiece welding steel

Tailpiece threaded brass

Typ e Comment to pipe to valve Code No.

Tailpiece threaded

(1 pcs.)

Tailpiece

welding

(1 pcs.)

DN 50 (2 ¼˝) 00 3Z0274

DN 50 (2 ½˝) 003Z0278

DN 50 (2 ¼˝) 003Z0272

DN 50

DN 50 (2 ½˝) 003Z 0276

VD.A6.E7.02 | 5

+ 11 hidden pages