Burkert Type 2658 User Manual
Page 13

13
TechnicalData
name and material of the individual parts
position
Components
Material
1
Insert
PVC-U
2
Handle
PVC-U
3
Shaft O-ring
EPDM-FKM
4
Shaft
PVC-U/PP/PVC-C/PVDF
5
Ball seat
PTFE
6
Ball
PVC-U/PP/PVC-C/PVDF
7
Body
PVC-U/PP/PVC-C/PVDF
8
Support O-ring for ball seat EPDM-FKM
9
Radial seal O-ring
EPDM-FKM
10
Socket seal O-ring
EPDM-FKM
11
Support for ball seat
PVC-U/PP/PVC-C/PVDF
12
End connector
PVC-U/PP/PVC-C/PVDF
13
Union nut
PVC-U/PP/PVC-C/PVDF
16
Spring for lock (optional)
Stainless steel
17
Safety handle block for lock
(optional)
PP-GR
25
Position indicator
POM
26
Dual Block Locking device
POM
6.2.2. pressure-temperature graphs
The fluidic data is dependent on the material properties of the plastic
ball valve.
Information on the chemical resistance of thermoplastic and
elastomer materials can be found in our table of resistances
At operating temperatures above 20° C reduce the operating
→
pressure depending on the material as follows:
bar
PVC
16
14
12
10
8
6
4
2
0
20
40
60
°C
PVC
Fig. 4:
english
Type 2657