Samson 2357-3 Mounting And Operating Instructions page 18

Design and principle of operation
Table 3-1: Technical data · All pressures in bar (gauge)
Type
Pressure rating
K coefficient
VS
Set point range
Fail-safe action
Excess pressure
function
Temperature range
Weight, approx.
Conformity
Version for liquid hydrogen
1)
Table 3-2: Materials · Material numbers according to DIN EN
Type
Body
Tubular plug
Plug
Bellows
Set point spring
Body gasket
A, B
C
Connections
Non-return
unit
3-6
2357-3
– Process medium in the gas
phase –
2 to 10 bar · 8 to 26 bar · 25 to 40 bar
5 bar above the set point
CC754S-GM (brass)
– Special version in the liquid phase –
PN 40
3.2
12 bar above the set point
0.5 bar above the set point
(–274 °C) –196 to +200 °C
1)
3.5 kg
·
2357-3
1.4301
1.4301 ∙ PTFE soft seal
1.4571
Stainless steel 1.4310
PTFE
M40x2
M26x1.5 male thread
M40x2
2357-3
1.4404
1.4301
Welding ends 26.9 x 2
M26x1.5
EB 2559 EN