Samson 3381 Series, Mounting And Operating Instructions, Page: 13 / 48

EB 8084 EN 3-1
Design and principle of operation
3 Design and principle of oper-
ation
3.1 Design
Type 3381-1:
− Single attenuation plates mounted be-
tween the valve or a pipe expander and
the pipe flange (see Fig. 3-1).
Type 3381-R:
− Reduced construction using less material:
single attenuation plates with reduced di-
ameter and possibly reduced thickness,
clamped between the valve or a pipe ex -
pander and the pipe flange (see
Fig. 3-2).
Type 3381-3-X:
− Silencer with two to five attenuation
plates located in one housing. An addi-
tional pipe expander is not required (see
Fig. 3-3).
Fig. 3-1: Type 3381‑1: Attenuation
plate downstream of pipe
expander
Fig. 3-2: Type 3381‑1R: Reduced construction with
attenuation plate downstream of the pipe
expander