Siemens VAG61 Series User manual

N4212en Smart Infrastructure

2019-06-04

ACVATIX™

2-port and 3-port control ball valves, PN 40, with externally

threaded connection

VAG61.., VBG61..

For use in heating, ventilation, and air conditioning plants as control or shutoff

valve. In closed circuits.

●Ball valve body made of brass CW602N (DZR)

●DN 15...50

●kvs 1...63 m3/h

●Flat sealing, externally threaded connections G..B, as per ISO 228-1

●Fitting sets ALG.. with threaded connection

●Rotational angle 90°

●Can be combined with electromotoric rotary actuators GQD..9A, GMA..9E with

Spring return and GSD161.9A, GDB..9E, GLD161.9E, GLB..9E without spring

return

●For applications with auxiliary functions (e.g. auxiliary switchs, potentiometers,

standard rotary actuatorsfrom the DAC product range can also be combined)

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Features

●Moderately price:

Optimized flow rates mean smaller ball valves can be selected. Low torque means you

can combine them with small, less expensive rotary actuators.

●Long life expectancy:

Maintenance-free construction, also thanks to low friction stem and polished ball made of

chrome-plated DZR brass.

●Simple mounting:

The brackets, premounted on the actuators, means you can mount them on the ball

valves without tools.

Technical design

Design

4214Z010

1 Housing 2 Connection with external threading

3 Seat 4 O-ring seal

5 Marble 6 Stem, squared

7 Slide clutch 8 O-ring seal

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Sizing

Flow diagram:

6,3

2,5

1,6

Low

--- Δpmax for VAG61.. and VBG61.., for details, see table on equipment combinations

Δpmax = Maximum permissible differential pressure over the ball valve, valid for the entire

positioning range of the ball valve rotary actuator unit; if low noise operation is desired, we

recommend a maximum permissible differential pressure of 200 kPa

Δpv100 = Differential pressure over the fully opened ball valve and over the control path at a volume

flow V100

100 = Volume flow through the fully opened ball valve

100 kPa = 1 bar ≈10 mWS

1 m

/h = 0.278 l/s water at 20 °C

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Ball valve characteristic curve

Through-port

Flow rate kv/ kvs

0,8

0,6

0,4

0,2

90°

Rotational angle

Flow characteristics

0…100 % -> A ─AB equal percentage, ngl = 3.9 per VDI / VDE 2173

3-port

Flow rate kv/ kvs

0,8

0,6

0,4

0,2

90°

Rotational angle

Through-port

0…100 % -> A ─AB equal percentage, ngl = 3.9 per VDI / VDE 2173

Bypass

0…100 % -> B ─AB linear, kvs greater than 70 % of A ─AB

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Cavitation

Cavitation increases wear and tear of the ball and seat and results in unwanted noise.

Cavitation can be prevented by not exceeding the differential pressures as per the flow

diagram and maintaining the static pressures depicted below.

0 100 200 300 400 500 600 700 800 900

1000

1100

1200

1300

2500

2000

1500

1000

500

140°C

120°C

100°C

80°C

Δpmax =Differential pressure at a nearly closed ball

valve to largely avoid cavitation

p1= Static pressure at the ball valve inlet

P3= Static pressure at the ball valve outlet

M Pump

J Water temperature

Example with hot water:

Pressure p1at ball valve inlet: 500 kPa (5 bar)

Water temperature: 120 °C

The above diagram clearly indicates that the maximum permissible differential pressure is

Δpmax →200 kPa (2 bar) at a nearly closed ball valve.

Note on chilled water applications

To prevent cavitation in chilled water circuits, sufficient counter pressure must be supplied to

the ball valve outlet, e.g. using an additional butterfly valve downstream of the ball valve.

Maximum permissible differential pressure over the ball valve: See 80 °C curve in the above

diagram.

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Operating pressure and operating temperature

Liquids:

Operating

pressure [bar]

Operating temperature [°C]

Operating pressure and medium temperature per IS0 7005

(Observe all local and applicable laws).

Type summary

Type Stock number Type Stock number DN kvs Sv

2-port 3-port

VAG61.15-1 S55230-V100 ─ ─ 15 1.0 > 500

VAG61.15-1.6 S55230-V101 VBG61.15-1.6 S55230-V120 1.6

VAG61.15-2.5 S55230-V102 VBG61.15-2.5 S55230-V121 2.5

VAG61.15-4 S55230-V103 VBG61.15-4 S55230-V122 4.0

VAG61.15-6.3 S55230-V104 VBG61.15-6.3 S55230-V123 6.3

VAG61.20-4 S55230-V105 VBG61.20-4 S55230-V124 20 4

VAG61.20-6.3 S55230-V106 VBG61.20-6.3 S55230-V125 6.3

VAG61.20-10 S55230-V107 ─ ─ 10

VAG61.25-6.3 S55230-V108 ─ ─ 25 6.3

VAG61.25-10 S55230-V109 VBG61.25-10 S55230-V126 10

VAG61.25-16 S55230-V110 ─ ─ 16

VAG61.32-10 S55230-V111 ─ ─ 32 10

VAG61.32-16 S55230-V112 VBG61.32-16 S55230-V127 16

VAG61.32-25 S55230-V113 ─ ─ 25

VAG61.40-16 S55230-V114 ─ ─ 40 16

VAG61.40-25 S55230-V115 VBG61.40-25 S55230-V128 25

VAG61.40-40 S55230-V116 ─ ─ 40

VAG61.50-25 S55230-V117 ─ ─ 50 25

VAG61.50-40 S55230-V118 VBG61.50-40 S55230-V129 40

VAG61.50-63 S55230-V119 ─ ─ 63

DN = Nominal size

kvs = Flow nominal value for chilled water (5…30 °C) through a fully opened ball valve at a

differential pressure of 100 kPa (1 bar)

Sv= Rangeability kvs / kvr

kvr = The smallest kv value at which the characteristic curve tolerances can be maintained at a

differential pressure of 100 kPa (1 bar)

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Accessories

Fittings

Type Article number Description

ALG..2 BPZ:ALG..2 2 piece fittings set for 2-port valves, existing of 2 cap nuts, 2 insert nuts,

and 2 flat seals.

ALG..2B are fittings made of brass for media temperatures up to 100 °C

ALG..2B S55846-Z1..

ALG..3 BPZ:ALG..3 3 piece fittings set for 3-port valves, existing of 3 cap nuts, 3 insert nuts,

and 3 flat seals.

ALG..3B are fittings made of brass for media temperatures up to 100 °C

ALG..3B S55846-Z1..

Insulation shells

Insulation shells are available for heating/cooling insulation as a separate accessory:

Type Material Density Thermal conductivity at tm 40 °C Operating

temperature

ALI..V..G.. Polyethylene foam 29 kg/m30.0372 W/mK -10 °C…100 °C

Ball valve Insulation shell Stock number Ball valve Insulation shell Stock number

VAG61.15.. ALI15VAG60/61 S55845-Z162 VBG61.15.. ALI15VBG60/61 S55845-Z168

VAG61.20.. ALI20VAG60/61 S55845-Z163 VBG61.20.. ALI20VBG60/61 S55845-Z169

VAG61.25.. ALI25VAG60/61 S55845-Z164 VBG61.25.. ALI25VBG60/61 S55845-Z170

VAG61.32.. ALI32VAG60/61 S55845-Z165 VBG61.32.. ALI32VBG60/61 S55845-Z171

VAG61.40.. ALI40VAG60/61 S55845-Z166 VBG61.40.. ALI40VBG60/61 S55845-Z172

VAG61.50.. ALI50VAG60/61 S55845-Z167 VBG61.50.. ALI50VBG60/61 S55845-Z173

Insulation shells for shut off and changeover ball valves

ALI..VAG.. ALI..VBG..

For dimensions, see Section Dimensions

Filter

Installed upstream of the ball valve:

Type Stock number Description DN Mesh width [mm]

ALX15 S55845-Z174 Filter with internal threading 15 0.5

ALX20 S55845-Z175 Filter with internal threading 20 0.8

ALX25 S55845-Z176 Filter with internal threading 25 0.8

ALX32 S55845-Z177 Filter with internal threading 32 0.8

ALX40 S55845-Z178 Filter with internal threading 40 0.8

ALX50 S55845-Z179 Filter with internal threading 50 0.8

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Equipment combinations

Type Rotary actuators

GQD..9A GSD161.9A GDB..9E GMA..9E GLD161.9E GLB..9E

Δpmax ΔpsΔpmax ΔpsΔpmax ΔpsΔpmax ΔpsΔpmax ΔpsΔpmax Δps

[kPa]

VAG61.15.. 350 1400 350 1400 350 1400 350 1400 350 1400 350 1400

VAG61.20..

VAG61.25..

VAG61.32-10 - - - - - - 1000 1000 1000

VAG61.32-16 - - - - - -

VAG61.32-25 - - - - - -

VAG61.40-16 - - - - - - 800 800 800

VAG61.40-25 - - - - - -

VAG61.40-40 - - - - - -

VAG61.50-25 - - - - - - 600 600 600

VAG61.50-40 - - - - - -

VAG61.50-63 - - - - - -

VBG61.15.. 350 ─350 ─350 ─350 ─350 ─350 ─

VBG61.20.. ─ ─ ─ ─ ─ ─

VBG61.25-10 ─ ─ ─ ─ ─ ─

VBG61.32-16 ─ ─ ─ ─ ─ ─ ─ ─ ─

VBG61.40-25 ─ ─ ─ ─ ─ ─ ─ ─ ─

VBG61.50-40 ─ ─ ─ ─ ─ ─ ─ ─ ─

Δpmax = Maximum permissible differential pressure over the valve ball control path, valid for the entire

positioning range of the ball valve rotary actuator unit; if low noise operation is desired, we

recommend a differential pressure of 200 kPa

Δps= Maximum permissible differential pressure (closing pressure) at which the ball valve rotary actuator

unit securely closes against the pressure

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Overview of rotary actuators for ball valves

Type 1) Operating voltage Positioning Spring return Data sheet

Signal Time Function Time

GQD131.9A AC/DC 24 V 3-position 30/15 s 2) Yes 15 s N4659

GQD161.9A DC 0…10 V

GSD161.9A AC/DC 24 V DC 0…10 V 30 s ─ ─ A6V10636056

GDB331.9E 3) AC 230 V 3-position 150 s ─ ─ N4657

GDB131.9E 3) AC 24 V

GDB161.9E 3) DC 0…10 V

GDB141.9E AC/DC 24 V 2 or 3 point 150 s - - -

GDB341.9E AC 100-240 V -

GDB161.9E AC/DC 24 V 0/2…10 V A6V10636150

GMA131.9E AC/DC 24 V 3-position 90/15 s 2) Yes 15 s N4658

GMA161.9E DC 0…10 V

GLD161.9E AC 24 V / DC 24…48 V DC 0/2…10 V 30 s ─ ─ A6V11171770

GLB331.9E 3) AC 230 V 3-position 150 s ─ ─ N4657

GLB131.9E 3) AC 24 V

GLB161.9E 3DC 0…10 V

GLB141.9E AC/DC 24 V 2 or 3 point 150 s - - A6V10636203

GLB341.9E AC 100-240 V

GLB161.9E AC/DC 24 V 0/2…10 V

1) Actuator type: Electromotive

2) Open/close

3) While stock lasts

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Ordering

Please indicate material, article type, order text, and quantity; example:

Material Article type Order text Quantity

VAG61.25-16 VAG61.25-16 Ball valve, externally threaded, 2-port 2

GLB161.9E GLB161.9E Actuator for ball valve, NSR 2

Delivery

Ball valves, rotary actuators, and mounting kits are not assembled and are delivered in

individual packaging.

Applications with auxiliary functions

A standard actuator with corresponding functionality can be used if a ball valve application

requires a rotary actuator with auxiliary functions (e.g. auxiliary switch or potentiometer). In

this case, mounting kit ASK77.x is required in addition to the rotary actuator.

Follow the mounting instructions when mounting.

Rotary actuator Options Order text: Mounting kit

GMA..1E

(with spring return) Potentiometer, auxiliary switch ASK77.2 Accessory Kit BV for GMAxx1.9E

GDB..1E / GLB..1E

(without spring return) Potentiometer, auxiliary switch ASK77.3 Accessory Kit BV for GLBxx1.9E

GQD..1A

(with spring return) Auxiliary switch ASK77.5 Accessory Kit BV for GQDxx1.9A

GSD..1A 1)

(without spring return) Auxiliary switch ASK77.5 Accessory Kit BV for GSDxx1.9A

Note

1) GSD141.1A (S55499-D281) and GSD341.1A (S55499-D282) are not compatible with ball

valves.

Product documentation

Related documents such as environmental declarations, CE declarations, etc., can be

downloaded at the following Internet address:

http://siemens.com/bt/download

Notes

Safety

DANGER

There is a risk to operating personnel and device when working on the unit

Failure to comply with these safety notes can result in personal injury and damage to

property from pipe pressure, electrical voltage, or device in operation.

wNote the following when servicing a ball valve/rotary actuator:

●Switch off both pump and operating voltage.

●Close shutoff valves.

●Release pressure in the pipes and allow them to cool down completely.

●Disconnect electrical connections from the terminals as needed.

●The rotary actuator must be properly installed prior to recommissioning the ball valve.

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