wT 2575/11
Page
8
KLINGER ball valves are basically MAINTENANCE FREE!
During long periods of non-operating, the valves have to be drained. In case of leakage the screws of
the body have to be retightened. Please check table No.1 for the required torque values!
KLINGER recommends operating the valve
minimum six times
a year to increase the service life!
Table 1: Tightening torques and wrench sizes (SW)
Tolerances for tightening torques of stuffing box nut: + 10 %
Tolerances for tightening torques of body screws:
±
10 %
Screw thread lubricated with special grease paste: MOLYKOTE 1000
Material codes of KLINGER Ballostar
KHE ball valves
The material codes (m.c.) characterise the materials of body and flange end piece.
Used Materials:
DIN
ANSI
Carbon steel: GS – C25N
1.0619
WCB
Stainless steel: G-X 6Cr NiMo 1810
1.4408
CF8M
1)
Approval in cryogenic temperature range acc. to pressure-/temperature-diagram wT 2455/2 (13.05.96)
(Application limits acc. to AD-Merkblatt W 10 – technical sheet for the acceptance of facilities)
Size
DN
NPS
15
½”
20
¾”
25
1”
32
40
1 ½”
50
2”
65
2 ½”
80
3”
100
4”
125
-
150
6”
200
8”
Tightening torque of
stuffing box nut
5 15
15
25 25 20 20 40 40 40
o.r.
o.r.
Tightening torque of
body screws
9 20
20 40 60 60 80 110
120
o.r.
o.r.
SW of stopper screws
8 10
10
13 13 13 13 19 19 19
o.r.
o.r.
SW of body screws
10 13 13 17 19 22 19 24 24 24 o.r. o.r.
SW of stuffing box nut:
DIN-version
ANSI-version
16
5
/
8
”
22
7
/
8
”
22
7
/
8
24
15
/
16
”
24
15
/
16
”
36
1
7
/
16
”
36
1
7
/
16
”
46
1
13
/
16
”
46
1
13
/
16
”
50
-
50
2”
65
2
9
/
16
”
SW of operating stem
8 11
11
14 14 17 17 22 22 27
27 36
o.r. = on request
Symbol
Body/end piece
Internal parts
Colour/surface treatment
VIII
Carbon steel
Without copper alloy
black - phosphated
Xc
Stainless steel
Stainless steel
blanc - pickled
