Samson 41-23 - Page 23

EB 2512 EN 3-7
Design and principle of operation
Table3-4: Materials · Material numbers according to DIN EN
Valve Type2412
Pressure rating PN16 PN 25 PN 40
Max.permissibletemperature 300°C 350°C
Housing
Cast iron EN-
GJL-250
Spheroidal graph-
ite iron
EN-GJS-400-18-LT
Cast steel
1.0619
Stainless steel
1.4408
Seat CrNi steel CrNiMo steel
Plug
Material CrNi steel CrNiMo steel
Seal PTFEwith15%glassber·EPDM·NBR·FKM
Guidebushing CrNi steel
Balancingbellowsandbellows
seal
Stainless steel 1.4571
Actuator Type2413
Diaphragm actuator Bellowsactuator
Diaphragm cases SheetsteelS235JR(St37-2)
1)
–
Diaphragm
EPDM·FKM·NBR·EPDMwith
PTFE protective facing
–
Bellowshousing – 1.5415/1.4301(stainlesssteelonly)
Bellows – 1.4571
1)
In corrosion-resistant version (CrNi steel)
Table3-5: Dimensions in mm and weights in kg
Pressure reducing valve Type41-23
Valve size DN15 DN20 DN25 DN32 DN40 DN50
DN65 DN80 DN100
Length L 130 150 160 180 200 230 290 310 350
Height H1 335 390 510 525
Height H2
Forged steel 53 – 70 – 92 98 – 128 –
Other materials 44 72 98 118
1)
+10%forallothermaterials
2)
Actuatorwithtwodiaphragms:1to2.5bar
3)
Actuatorwithtwodiaphragms:HeightH+50mm