wT 1209/11
Page 4
Note:
If the line and valve are subsequently insulated, the insulation should only
extend upto the head flange on the body side so that access to the bonnet hexagon
nuts is not impeded.
Since the valve body can remain in site for repairs and maintenance work, the
valve insulation does not need to be removable.
Klinger accepts no liability relating to guarantees, warranties and product liability legislation for damage
caused by incorrect installation and failure to observe the commissioning regulations.
Operating Instructions for KLINGER PISTON VALVES (KVN Model)
Klinger piston valves must be closed clockwise and opened anti-clockwise.
Especially when closing the valve, the hand wheel should be turned until it adjoins on the bonnet. Unlike
globe valves, piston valves do not require increased final torque. Due to the design of piston valves, a
seal may be achieved before the closed position is reached. To protect the valve rings, piston valves
must always be closed as far as they will go.
Because Klinger piston valves can also be used to regulate and to throttle, the above does not apply
when opening the valve or setting it to the open position for regulating or throttling purposes.
Through flow characteristics for valve throttle positions are available from Klinger on request.
If a valve starts being untight, check the tightening torques of the bonnet fastening nuts (27) referring to
the
table on page 11
and tighten if necessary.
The valve has to be in
CLOSED
position, except valves adjusted with
KX-GT valve rings
may remain
also in OPEN position.
Klinger accepts no liability relating to guarantees, warranties and product liability legislation for damage
caused by failure to observe the operating instructions.
Recommended Preventative Maintenance to Obtain the Best Possible Service Life
from KLINGER VALVES
As with all spindle-operated mechanisms, regular lubrication can substantially prolong the useful life of
the spindle (9). In addition, less effort is required to operate the hand wheel when the spindle is well
lubricated.