Siemens VAI60.15-15 Скачать руководство пользователя страница 4 | Manualshive

Страница: 4 / 18

Siemens VAI60.15-15 Скачать руководство пользователя страница 4

4
Siemens

CE1N4213en

Smart Infrastructure

2020-02-20

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.

Δp

max

= Differential pressure at a nearly closed ball valve

to largely avoid cavitation

p

1

= Static pressure at the ball valve inlet

P

3

= Static pressure at the ball valve outlet

M

Pump

J

Water temperature

Example with hot water:

Pressure p

1

at ball valve inlet: 500 kPa (5 bar)

Water temperature: 120 °C

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

max

→ 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.

«
...
2
3
4
5
6
...
»

Содержание VAI60.15-15

Страница 1: ...60 T For use in heating ventilation and air conditioning plants as shutoff or change over ball valve In closed circuits Ball valve body made of brass UNS C35330 DZR DN 15 50 kvs 5 96 m3 h Connections with internal threading Rp per ISO 7 1 Rotational angle 90 Can be used with electromotorized rotary actuators GQD 9A GMA 9E with spring return and GSD 9A GDB 9E GLB 9E without spring return ...

Страница 2: ...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 1 Housing 2 Internally threaded connection 3 Seat 4 O ring seal 5 Marble 6 Stem squared 7 Slide clutch 8 O rin...

Страница 3: ...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 ...

Страница 4: ...et P3 Static pressure at the ball valve outlet M Pump J Water temperature Example with hot water Pressure p1 at 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...

Страница 5: ...er valve T m3 h VBI60 15 5L 15 5 VBI60 15 12T 12 1 VAI60 15 15 15 VBI60 20 9L 20 9 VBI60 20 16T 16 1 VAI60 20 22 22 VBI60 25 9L 25 9 VBI60 25 16T 16 1 VAI60 25 22 22 VBI60 32 13L 32 13 VBI60 32 25T 25 1 VAI60 32 35 35 VBI60 40 25L 40 25 VBI60 40 49T 49 1 VAI60 40 68 68 VBI60 50 37L 50 37 VBI60 50 73T 73 1 VAI60 50 96 96 1 kvs Bypass B 50 of kvs A AB DN Nominal size kvs Flow nominal value for chill...

Страница 6: ...5 ALI25VAI60 61 VBI60 25 ALI25VBI60 61 VAI60 32 ALI32VAI60 61 VBI60 32 ALI32VBI60 61 VAI60 40 ALI40VAI60 61 VBI60 40 ALI40VBI60 61 VAI60 50 ALI50VAI60 61 VBI60 50 ALI50VBI60 61 Insulation shells for shutoff and changeover ball valves ALI VAI ALI VBI For dimensions see Section Dimensions 13 Filter Installed upstream of the ball valve Type Stock number Description DN Mesh width mm ALX15 S55845 Z174 ...

Страница 7: ...e 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 Overview of rotary actuators for ball valves Type 1 Operating voltage Positioning Spring return Data sheet Signal Time Function Time GSD141 9A AC DC 24 V Open close 2 30 s N4655 GSD341 9A AC 230 V GQD121 9A A...

Страница 8: ...n ASK77 3 Accessory Kit BV for GDB 1 9E GQD 1A with spring return Auxiliary switch ASK77 5 Accessory Kit BV for GQD 1 9A GSD 1A 1 without spring return ASK77 5 Accessory Kit BV for GSD 1 9A 1 GSDx4x 1A are not compatible with ball valves Product documentation Title Content Document ID Mounting instructions Ball valve VAI60 VBI60 L VBI60 T Mounting instructions M4213 74 319 0883 0 Rotary actuators ...

Страница 9: ...al provisions and comply with the appropriate safety regulations Engineering We recommend installing the ball valve with spring return since temperatures are lower on heating plants which increases the lifespan of the sealing gland on the stem Ensure there is no cavitation see Section Technical design 2 A filter must be installed upstream of the ball valve to increase functional safety Permissible...

Страница 10: ...ser to the pipe to be tightened or loosened Flow direction Make sure that the valve is mounted in the proper flow direction A symbol is applied to the ball valve body VAI60 VBI60 Ball valve Laser marking Position as delivered 90 turned clockwise VAI60 2 port shutoff ball valve A AB 4213Z01 A AB 4213Z02 A AB 100 A AB 0 VBI60 L 3 port changeover ball valve with L shaped B A AB 4213Z03 A B A AB 4213Z...

Страница 11: ...ste Special handling of individual components may be required by law or make ecological sense Adhere to all local and currently applicable laws and regulations Warranty Technical data on specific applications are valid only together with Siemens products listed under Equipment combinations Siemens rejects any and all warranties in the event that third party products are used ...

Страница 12: ... brass DZR 1 CW602N Marble Dezincification resistant hot pressed brass DZR 1 CW602N chrome plated Stem Dezincification resistant hot pressed brass DZR 1 CW602N Sealing gland EPDM O rings Dimensions Weight See Dimensions 13 Internally threaded connection Rp per ISO 7 1 Standards directives and approvals Pressure Equipment Directive DGR 2014 68 EU Pressure accessories Fluid group 2 Range Article 1 p...

Страница 13: ...0 15 15 15 26 31 1 42 Rp 30 8 61 6 27 6 37 6 VAI60 20 22 20 31 38 42 Rp 33 5 67 30 5 40 5 VAI60 25 22 25 39 42 5 42 Rp 1 38 4 76 8 30 5 40 5 VAI60 32 35 32 48 52 42 Rp 1 44 88 34 3 44 3 VAI60 40 68 40 55 61 42 Rp 1 50 9 101 8 39 8 49 8 VAI60 50 96 50 67 74 42 Rp 2 58 1 116 2 52 8 62 8 1 Ball valve body extends above threaded connection Type H Weight GSD 9A GQD 9A GDB 9E GMA 9E GLB 9E mm kg VAI60 1...

Страница 14: ... Rp 1 54 8 109 6 39 8 49 8 VBI60 50 37L 50 67 68 9 105 9 42 Rp 2 65 7 131 4 52 8 62 8 VBI60 15 12T 15 26 34 49 5 42 Rp 33 3 66 6 27 6 37 6 VBI60 20 16T 20 39 39 8 61 05 42 Rp 40 2 80 4 30 5 40 5 VBI60 25 16T 25 39 44 8 66 5 42 Rp 1 42 7 85 4 30 5 40 5 VBI60 32 25T 32 48 52 6 78 6 42 Rp 1 49 6 99 2 34 3 44 3 VBI60 40 49T 40 55 57 1 87 6 42 Rp 1 54 8 109 6 39 8 49 8 VBI60 50 73T 50 67 68 9 105 9 42 ...

Страница 15: ...56 95 65 27 21 100 ALI20VAI60 VAI60 20 22 20 56 95 66 32 27 105 ALI25VAI60 61 VAI60 25 22 25 56 95 80 37 34 108 ALI32VAI60 61 VAI60 32 35 32 86 100 95 47 43 130 ALI40VAI60 61 VAI60 40 68 40 95 102 98 50 48 140 ALI50VAI60 61 VAI60 50 96 50 105 96 110 56 61 160 Type H Weight GSD 9A GQD 9A GDB 9E GMA 9E GLB 9E Insulation shell For ball valve mm g ALI15VAI60 61 VAI60 15 15 300 300 300 300 300 15 ALI20...

Страница 16: ...0 61 VBI60 15 15 100 50 70 34 21 100 ALI20VBI60 VBI60 20 20 115 55 80 40 27 120 ALI25VBI60 61 VBI60 25 25 115 55 80 40 34 120 ALI32VBI60 61 VBI60 32 32 125 55 95 45 43 150 ALI40VBI60 61 VBI60 40 40 125 55 95 45 48 150 ALI50VBI60 61 VBI60 50 50 145 60 110 54 61 170 Type H Weight GSD 9A GQD 9A GDB 9E GMA 9E GLB 9E Insulation shell For ball valve mm g ALI15VBI60 61 VBI60 15 300 300 300 300 300 21 ALI...

Страница 17: ...2M03 Type DN b c G L H kvs Weight mm Inch 1 mm kg ALX15 15 12 38 G 54 27 3 5 0 178 ALX20 20 15 43 G 67 34 5 8 0 290 ALX25 25 16 53 G 1 79 41 9 1 0 410 ALX32 31 17 64 G 1 98 51 19 0 680 ALX40 40 18 70 G 1 106 57 24 0 874 ALX50 50 20 85 G 2 122 69 36 1 428 1 ISO 228 1 ...

Страница 18: ...ange without notice Document ID CE1N4213en Edition 2020 02 14 Revision numbers Type Valid from rev no Type Valid from rev no Type Valid from rev no Shutoff ball valve VAI60 Changeover ball valve VBI60 L Changeover ball valve VBI60 T 2 port 3 port 3 port VAI60 15 15 A VBI60 15 5L A VBI60 15 12T A VAI60 20 22 A VBI60 20 9L A VBI60 20 16T A VAI60 25 22 A VBI60 25 9L A VBI60 25 16T A VAI60 32 35 A VBI...

Отзывы:

Нет отзывов