Samson 42-36 E - Page 25

EB 3018 EN 3-9
Design and principle of operation
Table 3-3: Materials · Material number according to DINEN
Type2423E Valve balanced by a bellows
Pressure rating PN16 PN25 PN16, 25 and 40
Valve body
Cast iron
EN-GJL-250
Spheroidal graphite
iron
EN-GJS-400-18-LT
Cast steel
1.0619
Cast stainless
steel 1.4408
Forged stainless
steel 1.4404
1)
Seat 1.4104, 1.4006 1.4404
Plug
Up to DN100 1.4104, 1.4006
2)
1.4404
DN125 to 250 1.4301, 1.4404 with PTFE seal
Plug stem 1.4301
Metal bellows 1.4571 · DN125 and larger: 1.4404
Bottom section P265GH 1.4571
Body gasket Graphite on metal core
Type2423E Valve balanced by a diaphragm
Pressure rating PN16 PN25 PN16, 25 and 40
Valve body
Cast iron
EN-GJL-250
Spheroidal graphite
iron
EN-GJS-400-18-LT
Cast steel
1.0619
6)
Cast stainless
steel 1.4408
6)
–
Valve seat Red brass
3) 4)
Plug (standard version)
Red brass
3) 5)
· With EPDM soft seal, max. 150°C or with PTFE soft seal, max.
150°C
Pressure balancing
Balancing cases made of sheet steel DD11 · EPDM balancing diaphragm, max.
150°C
7)
Type2426 Actuator
Diaphragm cases 1.0332 1.4301
Diaphragm EPDM with fabric reinforcement · Special version for mineral oils: FKM
7
)
Guide bushing DU bushing PTFE
Electric actuators
Materials
Type5827 Electric Actuator
Type3374 Electric Actuator
uT5827
uT8331-3
1)
DN15, 25, 40 and 50 only
2)
Optionally with soft seal with standard K
VS
coefcients
3)
Special version 1.4409
4)
DN65 to 100: 1.4006
5)
DN65 to 100: 1.4104/1.4006
6)
DN125 to 250 only
7)
Special version with FKM and two diaphragms