7
Mounting
Mounting and operation only by trained, qualified personnel.
Warning
Danger of crushing! Danger of shearing!
During operation of the ball valve, body parts can be crushed or cut in the orifice
of the ball valve.
Do not reach into the orifice of the ball valve.
Before installation, execute a function test.
Ensure that the ball valve can be put correctly into the end position. Ball valves
with detectable operative malfunctions must
not
be installed.
Ensure that the equipment is free of stress during installation.
When mounting a semi-rotary drive, observe the documentation for the semi-
rotary drive.
Avoid additional piping connector forces.
The ball valve is designed for operation with normal stress within piping systems.
Longitudinal or bending forces can occur in piping systems that are subject to tem
perature fluctuations.
Use appropriate mountings on the process valve to avoid such forces.
The piping connectors of the ball valves have a female thread to EN 10226-1 and
must be screwed to the pipeline with appropriate fittings.
Use appropriate sealing material on the pipe connections.
Screw the pipelines into the connecting thread of the ball valve.
Check the connection points for tightness.
8
Commissioning
Make sure that the permissible pressure range of the product is not exceeded
(
Technical data).
The actuating elements of the ball valves are harmonised to the maximum forces
of the shaft and ball. Changes to these components are impermissible and can
cause damage.
9
Operation
Make sure that the permissible limit values are adhered to (
Technical data).
Permissible medium pressures are shown in the pressure-temperature diagram
(
Fig. 5).
The permissible medium pressure sinks as a function of the temperature of the
medium.
1
2
1
Pressure p [bar]
2
Temperature of medium t [°C]
Fig. 5
Pressure–temperature diagram
10
Maintenance and care
The ball valves VZBA are maintenance-free. For operational safety, it is recommen
ded to operate them at least 1 or 2 times per year. Depending on the operating
conditions, the ball valves and connection points should be checked for tightness
at regular intervals.
11
Disassembly and repair
Due to the design of closed ball valves, residual fluid may be retained in the ball
passage.
Before dismantling:
Completely relieve the pressure in the pipeline and the process valve.
Operate the ball valve to completely drain the ball passage.
Especially with harmful media, make sure:
that no one is in front of the outlet orifice when it opens,
the pipeline is completely drained and rinsed before disassembly in order to
avoid risk from dangerous media.
Repair must be performed only by trained personnel using the set of wearing parts
from Festo. Information about spare parts and auxiliary means can be found at
www.festo.com/spareparts.
12
Troubleshooting
Malfunction
Possible cause
Remedy
Leakage at the
switching shaft
Wear of the sealing elements (packing
gland) on the switching shaft
Reset gland nut
(
Fig. 9)
Leakage at the separate
halves of the housing
Housing seal was squeezed when a
threaded connecting sleeve was screwed in
Replace housing
seals
1)
Leakage in the ball
valve through-hole
Spherical seal damaged through solids in
the medium
Replace spherical
seals
1)
1)
Observe the spare parts catalogue in the internet (
www.festo.com/spareparts).
Fig. 6
13
Technical data
General data
VZBA-...-63-32..-...-V4V4T
Process valve connection
Type code Fig. 2
Type of mounting
In-line installation
Manual override
None
Based on standard
EN 10226-1, ISO 5211
Medium
– Compressed air to ISO 8573-1:2010 [-:-:-]
– Inert gases
– Water - no water vapour
– Neutral fluids
– Other media on request
Actuation type
Mechanical
Sealing principle
Soft
Mounting position
Any
Flange hole pattern
Type code Fig. 2
Design
3-way ball valve with L– or T–hole
Type code Fig. 2
Temperature of medium
[°C] –10 ... +200
Process valve nominal
pressure PN
63
Switching position display
Slot direction = flow direction
Direction of flow
Reversible
Information on material
– Seals
PTFE, reinforced PTFE
– Housing
High-alloy stainless steel (1.4408)
– Ball
High-alloy stainless steel (1.4408)
– Shaft
High-alloy stainless steel (1.4401)
Note on materials
Contains PWIS (paint-wetting impairment substances)
CE mark (see declaration of conformity
www.festo.com)
– VZBA-
¼
" to VZBA-1"
no, in accordance with EU Pressure Equipment Directive, art.3,
par.3
– VZBA-1¼" to VZBA-2"
yes, in accordance with EU Pressure Equipment Directive
Fig. 7
VZBA-...-GGG-63-32..-
...-V4V4T
Actu
ation
moment
Flow rate Kv
hole
Inside
diameter
(ID)
Nomi
nal
size
Product
weight
[Nm]
2)
[m
3
/h]
3)
[mm]
4)
(DN)
[g]
L
TG
1)
TE
1)
...-
¼
"-...-63-32L-F0304-
13
4.5
–
–
11.6
8
700
...-
¼
"-...-63-32T-F0304-
–
8
4.5
...-
y
"-...-63-32L-F0304-
4.5
–
–
12.7
10
...-
y
"-...-63-32T-F0304-
–
8
4.5
...-
½
"-...-63-32L-F0304-
4.7
–
–
15
...-
½
"-...-63-32T-F0304-
–
8.3
4.8
...-
¾
"-...-63-32L-F0405-
18
5.1
–
–
16
20
1000
...-
¾
"-...-63-32T-F0405-
–
8.3
4.8
...-1"-...-63-32L-F0405-
22
11.8
–
–
20
25
1600
...-1"-...-63-32T-F0405-
–
22.4
10.9
...-1
¼
"-...-63-32L-F0405-
35
19.6
–
–
25.4
32
2800
...-1
¼
"-...-63-32T-F0405-
–
36.5
18
...-1
½
"-...-63-32L-F0405-
42
33.2
–
–
31.8
40
3800
...-1
½
"-...-63-32T-F0405-
–
62
30
...-2"-...-63-32L-F0507-
68
53.7
–
–
38.1
50
7400
...-2"-...-63-32T-F0507-
–
100
48.8
1)
TG=T-hole, straight flow; TE=T-hole, flow at right angles
2)
Torque required for actuating the tap, pressure-dependent, specified for PN
3)
Flow rate of water at 15 °C and at a differential pressure of 1 bar, measured in accordance with
VDI/VDE 2173
4)
Smallest flow-through diameter
Fig. 8
Tightening torques [Nm]
Size
Connecting sleeve Gland nut
Size
Connecting sleeve Gland nut
¼
"
157
2.5
1-
¼
"
411.9
3.4
y
"
1-
½
"
510
5.9
½
"
206
2"
686.5
¾
"
255
-
1"
323.6
3.4
Fig. 9
