Samson 3351, Mounting And Operating Instructions

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EB 8039 EN 7
Design and principle of operation
DN 100 version
DN 15 to 80 version
with handwheel
Fail-open R = 47 mm
Fail-close R = 64 mm
DN 15 to 50
Version with bellows seal
Detailed view:
connection for
control pressure
with G ¼ female
thread
A
6
5.7
5.4
5.6
5.5
3.2
3.1
5
5.2
4.2
4
4.3
4.1
5.1
5.9
3.3
3
5.8
A
A B
1.1
1.2
2
3
1
R
5.8
5.7
7.3
7.1
7.4
7.2
7
Fail-open Fail-close
Fail-close Fail-close Fail-open
Fig. 1: Functional diagram of Type 3351 Pneumatic On/off Valve