1 name plate, ce and body markings, 2 tightening torques, Name plate, ce and body markings – Richter KNP-D/F Series Ball Valves (ISO/DIN) User Manual
Page 4: Tightening torques, Series kn/f, knp/f, kn-d/f, knp-d/f
Series KN/F, KNP/F, KN-D/F, KNP-D/F
Page 4
520-050-en
Revision 10
TM 8361
Edition 10/2011
Wear parts :
Seat rings
Packing components
Ball/stem unit
Al
2
O
3
-ball
Stem
Options :
Richter ENVIPACK double packing
for particularly high safety requirements, self-
adjusting.
On request, monitoring and flushing connection.
Ball/stem unit extension
Hand lever extension
Limit switches
for remote monitoring of hand and remote-
activated ball valves.
Stainless steel heating jacket
can be retrofitted, suitable for all common heat
carriers.
1.1 Name plate, CE and body
markings
The stainless steel name plate is undetachably riveted
to the body.
If the operator attaches his identification, it must be
ensured that the valve matches the application in
question.
Example of name plate with CE marking:
No CE marking is permissible for the sizes 15, 20 and
25; the name plate therefore has no CE marking.
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 Chapter 8, Flange connection valve /
pipe is leaking.
The following tightening torques are recommended:
Packing screws
Tighten packing gland follower 503 until spring gland
follower 502 is in contact without any gap. In DN 80,
100, 150 and 200 are 2 spring gland followers 502.
Pipe screws
Flange
nom. size
Screws
Tightening
torque
[mm]
[ISO/DIN]
[Nm]
15
4 x M12
6
20
4 x M12
8
25
4 x M12
10
40
4 x M16
20
50
4 x M16
26
80
8 x M16
25
100
8 x M16
35
150
8 x M20
65
200
12 x M20
100
Pipe screws, flanges ISO/DIN drilled to ASME
Class 150
Flange
nom. size
Screws
Tightening torque
[mm] [inch] [ASME]
[in-lbs]
[Nm]
15
½"
4 x ½“
45
5
20
¾"
4 x ½“
55
6
25
1"
4 x ½“
70
8
40
1½"
4 x ½“
135
15
50
2"
4 x N“
220
25
65
2½"
4 x N“
265
30
80
3"
4 x N“
400
45
100
4"
8 x N“
310
35
150
6"
8 x ¾“
710
80
200
8"
8 x ¾“
1020
115