Richter RSS/F Series Bellows-Sealed Control Valves - 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.