Operation
The valve is operated by handwheel (ON 13 3110),
chainwheel (ON 13 3130) or from a stand (ON 13 3140
and ON 13 4142).
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Application
Shut-off valve for water, steam, on special
request also for non-aggressive liquids,
vapours and gases for service pressures and
temperatures:
The valve is not suitable for valve regulation.
Technical description
The valve is yoke-type. Closing disc fits into
sealing surface welded into its body. Stem is
sealed with gland packing in the yoke. In
DN 15-100 valves the flow direction is from
under the disc. For DN 125-200 valves, the
flow direction is from above the disc and
internal bypass reduces pressure difference
before and after the closing element. (pressure
drop).
Connecting and face-to-face dimensions
Face-to-face dimensions as per DIN 3202 F1.
Flange connecting dimensions as per
DIN2501.
Flange faces as per DIN2526, Form C.
Basic connecting and face-to-face dimensions
are given in the table below.
Material
Body, yoke carbon steel (GS-C25)
Stem stainless steel (13Cr)
Disc up to DN 100 stainless steel (13Cr)
Disc for DN 125 and above
carbon steel with weld
overlay (13Cr)
Gland packing asbestos-free graphite
Testing
The valve is tested as per DIN 3230.
Installation
The valve can be installed in any position in a
pipeline depending on the flow direction.
However, the recommended position is with
the stem vertical and the handwheel upwards. |
