DUKER 3004 Руководство по эксплуатации - Страница 7
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5. Operation
The valve is shut by turning it clockwise and is opened by turning it in the opposite direction. Manual power
suffices to operate the valves. Use of extensions to increase actuating torque is not permissible, since this
will cause damage to the valve.
Operating torques
The stated operating torques are the max. permissible torques for full differential pressure at the actuating
stem, these are described in EN 1074-2.
nominal diameter
DN
80
100
150
200
250
300
6. Service and Maintenance
The valves do not require regular maintenance work. However, when a pipeline section is inspected, the
valve may not show any leakage to the outside.
The valve should be checked for tightness and proper function at least once per year.
Issue 02
max.
operating torque
as per EN 1074-2
MOT Nm
80
100
150
200
250
300
Düker GmbH, www.dueker.de
no. of turns for
closing
16
20
30
34
42
51
stem square
mm
17
19
19
24
27
27
7