Series 642
DESCRIPTION OF PRODUCT
605593EC
Edition 2017-11-24
7/113
1.6.2
Valve unit
Description
Pressure range at 20
°
C (unheated on delivery)
•
DN63…200
•
DN250…400
1 × 10E-8 mbar to 2.0 bar (abs)
1 × 10E-8 mbar to 1.2 bar (abs)
Leak rate to outside / seat at 20
°
C (unheated on delivery)
1 × 10E-9 mbar ls
-1
Differential pressure on the gate
•
Valve closed
- DN63…200
- DN250…400
•
During closing / opening
≤
2.0 bar
≤
1.2 bar
≤
30 mbar
Cycles until first service (unheated and under clean conditions)
•
Pressure control
•
Isolation cycles
1’000’000
200’000
Admissible operating temperature
•
Valve body
•
Ambient
≤
150°C
≤
1
50°C
Mounting position (valve seat to face chamber is recommended)
•
DN63…350
•
DN400
Any
Horizontal only (optional in vertical position with
extended closing time, fewer cycles)
Process side materials
body / plate
Stainless steel: 304 (1.4301)
other parts
Stainless steel: 301 (1.4310), 304 (1.4301),
420 (1.4034), 420D (1.4037), 430 (1.4016)
Seals
plate
FKM (e.g. Viton
®
)
rotary feed through
FKM (e.g. Viton
®
)
bonnet
FKM (e.g. Viton
®
) (DN63…200 vulcanized)
Operating time (s) for:
DN 63
2½"
DN 80
3"
DN 100
4"
DN 160
6"
DN 200
8"
DN 250
10"
DN 320
12"
DN 350
14"
DN 400
16"
Open / close
4
4
6
6
6
10
10
10
10
Pressure control
(throttling)
3
3
3
5
5
9
9
9
9
Min. controllable
conductance (ls
-1
)
[N
2
molecular flow]
0.65
0.8
1
1.6
2
2.5
3.2
3.5
4
Max. Conductance (ls
-1
)
[N
2
molecular flow]
440
800
1700
5000
12000
22000
30000
40000
50000
Weight (approx.)
kg
14
14
17
28
34
62
112
120
155
lbs
31
31
37
62
75
136
246
264
340
Valve position indication
Visual (mechanical and on controller)
Dimensions
Refer to dimensional drawing of specific valve
ordering number (available on request)
