Richter GUT/F Series Overflow Valves - Manual (Page 4)

Series GUT/F
Page 4
9530-071-en Revision 10
TM 8361 Edition 10/2011
1.2 Tightening torques
All screws greased, tighten in diametrically
opposite sequence!
The tightening torques for pipe screws and body
screws mentioned must not be exceeded. For an
exception, see Section 8, Flange connection valve /
pipe is leaking.
The following tightening torques are recommended.
Pipe screws, flanges to ISO/DIN
Flange
nom. size
Screws Tightening torque
[mm] [ISO/DIN] [Nm] [in-lbs]
25 4 x M 12 10 90
Pipe screws
flanges to ASME Class 150 or flanges ISO/DIN drilled
to ASME Class 150
Flange
nom.size
Screws Tightening torque
[mm] [inch] [ASME] [Nm] [in-lbs]
25 1“ 4 x ½“ 8 70
Pipe screws
Flansche nach ASME Class 300
Flange
nom.size
Screws Tightening torque
[mm] [inch] [ASME] [Nm] [in-lbs]
25 1 4 x M“ 15 133
Cover screws ISO/DIN
Flange
nom. size
Screws Tightening torque
[mm]
[inch
]
[ISO/DIN] [Nm] [in-lbs]
25 1“ 4 x M 10 50 442
Cover screws ASME
Flange
nom. size
Screws Tightening torque
[mm] [inch] [ASME] [Nm] [in-lbs]
25 1“ 4 x ½“ 50 442
1.3 Screw-in tool for valve seat
Nominal size
Article No.
[mm] [inch]
25 1“ 9568-96-1001
1.4 Pressure-temperature diagram
The diagram shows the max. admissible pressure /
temperature loading of the body.
When used in the minus temperature range,
the regulations applicable in the country in
question must be observed.
For applications under -10 °C (14 °F) to -60 °C (-76
°F) a special material must be selected for the spindle.
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).
Test pressure p1
Back pressure p2