5
0.453
0.984
0.906
0.591
0.177
ød0
ød
l
¾ - 1
0.217
0.193
0.984
1000 - 25 m/m
1½ - 2
0.217
0.256
1.220
1000 - 25 m/m
2½ - 4
0.256
0.327
1.535
1000 - 25 m/m
5 - 8
-
-
-
1000 - 25 m/m
FIgURe 6.2
lock pin and pad lock (inch)
cauTion
Thermal insulation
In a condition where fluid in valve solidifies due to low temperature in jacket, shaft will twist during
traveling of the valve. If solidification is expected, operate the valve after liquefying the fluid by
introducing hot media into the jacket.
Fully opened
Fully closed
the cavity
FIgURe 7
8 abnorMal preSSure riSing
cauTion
Malfunction or damage of sealing material of the ball valves may occur due to abnormal pressure rise
caused by fluid trapped in the cavity (see Figure 7) between the body, ball and seat.
Abnormal pressure rise can be caused by
1. Rapid heating of valve exterior.
2. Exposure to high temperature fluid after the valve is closed.
3. Location near heat source.
Please contact us concerning countermeasures for these problems, e.g. providing a pressure-relieving
hole on the surface of a ball used for high pressure applications.
KTM
Jacketed ball valves
InstallatIon and operatIon manual
locK pin and pad locK diMenSionS (inch)
valve nominal diameter (inch)
pin dimensions
pad lock type
(full bore)
d0
d
l
alpha no.