Application
The valve is intended to prevent reverse flow
and strokes of the service fluid. If necessary,
the valve can be permanently closed. For use
with water, steam, non-aggressive liquids and
gases for service pressures and temperatures:
Flow direction is from under the disc.
Connecting and face-to-face dimensions
Face-to-face dimensions DIN 3202.
Dimensions of inlet and outlet body flange
face "C"-shaped or "D"-shaped as per
DIN 2501 and DIN 2545.
Material
Body, yoke cast steel (42 2643)
Gland follower malleable iron
Stem stainless steel
Disc to DN 50 stainless steel
Disc from DN 65 carbon steel
Seat stainless steel
Gland packing asbestos-free
Installation
The valve can be installed only into horizontal
pipeline.
Operation
The valve can be closed by handwheel. When
the stem is in its uppermost position, the valve
works automatically, using the pressure of the
service fluid on the disc, which closes to
prevent reverse medium flow.
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