3 VALVE DESCRIPTION
Revision status: 03/05/2022 7 Index number: D0-116
From DN 125 to DN 300.
Centering via grooves or outer diameter of
housing.
From DN 15 to DN 100.
High pressure version up to 160bar.
Centering over the outer diameter of the
body.
From DN 15 to DN 100.
Plastic version.
Centering over the outer diameter of the
body.
3.2 Intended use
Disco check valves are valves used to prevent backflow in piping systems. AWS check
valves are characterized by their simple design as well as their short face-to-face length
(according to DIN EN 558, series 49 and series 52). They provide an optimal solution where
wafer connections are required. In addition to the standard design, valves can also be
supplied with a wide range of special opening pressures (additional option S07), so that an
extremely wide range of applications can be covered. For further special options, please read
the sales documents.
The above-mentioned check valves are suitable for use in pipeline systems for the transport
of liquid and gaseous fluids, as well as in systems where particularly high requirements are
placed on the material. The valves are not suitable for solids.
3.3 Description of function
Disco check valves are medium-controlled backflow preventers and open when the opening
force of the medium is greater than the closing force of the disc. In case of failure (e.g. pump
failure) or backflow of the medium, the valve closes automatically.
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