Richter KAP-N Series Bottom Drain Ball Valves - Manual (Page 4)

Installation and Operating Manual
Series KA-N, KAP-N, ball and stem
9520-067-en Revision 00
TM 6404 MPE/Wm Page 4 Edition 02/2006
Body identification :
The following are visible on the body according to DIN
EN 19 and AD 2000 A4:
Nominal size
Rated pressure
Body material
Manufacturer's identification
Melt number/Foundry identification
Cast date
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:
Packing screws
The pretension has been reached when the spring
gland follower is bent horizontally.
Pipe screws
Flanges
nom. size Screws
Tightening
torque
[mm] [ISO/DIN] [Nm]
25 4 x M12 12
50 4 x M16 30
80 8 x M16 25
100 8 x M16 30
150 8 x M20 55
Body screws
Nom. size Screws
Tightening
torque
[mm] [ISO/DIN] [Nm]
50/25 4 x M12 35
80/50 4 x M16 45
100/50 4 x M16 45
150/100 8 x M16 60
1.3 Breakaway torques
Test medium: water 20 ° C
Higher breakaway torques may occur with other
media.
DN p in bar
3 6 10 16
max.
admin.
[mm] [Nm] [Nm] [Nm] [Nm] [Nm]
50/25 12 12 12 12 28
80/50 25 30 35 50 100
100/50 25 30 35 50 100
150/100 80 130 200 280 350
1.4 Flow values
Nom. size
[mm]
kv100
[m 3 /h]
50/25 22
80/50 90
100/50 87
150/100 388
1.5 Pressure-temperature-diagram
When used in the minus temperature range,
the regulations applicable in the country in
question must be observed.
A special core material is used for the stem for
operating limits under – 10 °C to – 60 °C.