Samson 2404-2, Mounting And Operating Instructions

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EB 2540 EN 3-7
Design and principle of operation
Table 3-4: Materials for main valve · Material numbers according to ASTM and DIN EN
Type 2406 as main valve
Body
A126B, A216 WCC, A351 CF8M · EN-GJL-250, 1.0619,
1.4408
Valve seat 1.4404/316L
Plug 1.4404/316L
Plug seal EPDM · NBR · FKM
Operating diaphragm, balancing
diaphragm
EPDM · NBR
4)
· FKM
Internal parts, guiding parts 1.4404/316L
Diaphragm cases 1.0332 (1.4301/stainless steel body)
Actuator springs 1.4310
3)
Type 2422 Valve (main valve) with Type 2420 Actuator
Body A126B, A216 WCC, A351 CF8M · EN-GJL-250, 1.0619,
1.4408
Valve seat and plug NPS 8 to 10 (DN 200 to 250): CF3M (1.4409)
NPS 12 and 16 (DN 300 and 400): 304 or 410 (1.4301) 1)
Plug seal EPDM · NBR · FKM
Operating diaphragm, balancing
diaphragm
EPDM · NBR · FKM 2)
Internal parts, guiding parts 1.4404/316L
Diaphragm cases 1.0332 (1.4301/stainless steel body)
Actuator springs 1.4310
3)
1)
NPS 12 and 16: optionally 1.4404/316L
2)
NPS 8, 10 and 12 (DN 200, 250 and 300) only
3)
Versions for sour gas service (NACE): Hastelloy
®
4)
Not for NPS 2½, 3 and 4/DN 65, 80 and 100