4 pressure-temperature diagram, Pressure-temperature diagram, Series rss/f – Richter RSS/F Series Bellows-Sealed Control Valves User Manual
Page 5
Series RSS/F
Page 5
9260-060-en
Revision 03
TM 7168
Edition 06/2008
Pipe screws, flanges to ASME Class 300
Flange nom.
size
Screws
Tightening torque
[mm]
[inch]
[ASME]
[Nm]
[in-lbs]
25 1“ 4
x
M“
15 133
40
1½“
4 x ¾“
25
221
50 2“ 8
x
M“
15 133
Cover screws ISO/DIN
Flange nom.
size
Screws
Tightening torque
[mm]
[inch]
[ISO/DIN]
[Nm]
[in-lbs]
15
½“
4 x M10
30
266
20
¾“
4 x M10
30
266
25
1“
4 x M10
50
442
40
1½“
4 x M12
50
442
50
2“
4 x M12
50
442
65
--
4 x M12
50
442
80
3“
8 x M12
50
442
100
4“
8 x M12
50
442
Cover screws ASME
Flange
nom. size
Screws
Tightening torque
[mm] [inch]
[ASME]
[Nm]
[in-lbs]
15 ½“ 4
x
N"
30 266
20 ¾“ 4
x
N"
30 266
25
1“
4 x ½“
50
442
40
1½“
4 x ½“
50
442
50
2“
4 x ½“
50
442
80
3“
8 x ½“
50
442
100
4“
8 x ½“
50
442
Seat
Screws not greased
Flange nom.
size
Tightening
torque
[mm] [inch]
[Nm]
[in-lbs]
15 ½“ 3 26
20 ¾“ 3 26
25 1“ 6 53
40 1½“ 12 106
50 2“ 16 142
65 2½“ 16 142
80 3“ 28 248
100 4“ 30 265
1.4 Pressure-temperature
diagram
According to AD 2000
According to ASME B 16.42
When used in the area of application of ASME or
ANSI/ISA, the low temperature of ASTM A395 is
limited to -20°F (-29°C).
When used in the minus temperature range,
the regulations applicable in the country in
question must be observed.