Samson 33-7, Mounting And Operating Instructions

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3-2 EB 2551-2 EN
Design and principle of operation
10
10.1
1
2
3
11
6
7
p
1
p
2
p
1
p
S
p
1
p
2
p
S
12
4
5
8
8.1
8.2
9
1
Main valve
2 Seat
3 Plug
4
Plug stem
5 Balancing bellows
6
Operating diaphragm
7 Positioning springs
8 Pilot valve
8.1 Filter
8.2 Set point springs
9
Set point adjuster
10 Control line for upstream pressure p
1
10.1 Control line for upstream pressure p
1
11 Control line for downstream pressure p
2
12 Control line for control pressure (p
S
)
Fig. 3-1: Functional diagram of Type 33-7