Samson 3251, Mounting And Operating Instructions, Page: 21 / 60

EB 8052 EN 21
Design and principle of operation
Valve
NPS 8 10 12 14 16 20
DN 200 250 300 – 400 500
H8 for
actuator
1000 cm²
in 16.46
On request
mm 418
1400-
60 cm²
in 16.46
On request
mm 418
1400-
120 cm²
in 19.80 19.80 25.59 25.59 25.59 25.59
mm 503 503 3) 650 650 650 650
2800 cm²
in 19.80 19.80 25.59 25.59 25.59 25.59
mm 503 503 3) 650 650 650 650
2x2800 cm²
in 19.80 19.80 25.59 25.59 25.59 25.59
mm 503 503 3) 650 650 650 650
H2 (NPS 4
and larger
with foot)
Class 150
in 9.84 12.21 14.57
On request
16.34
On request
mm 250 310 370 415
Class 300
to 600
in 10.63 11.82 15.35
On request
mm 270 300 390
Class 900
in
On request
mm
Class
1500
in
On request
mm
Class
2500
in
On request –
mm
1)
NPS 10, Class 150 to 300: 17.40” or 442 mm
2)
NPS 10, Class 600 to 900: 20.43” or 519 mm
3)
H8 = 25.59“ or 650 mm with 250 mm seat bore