Application
Self-acting valve preventing from reflux of
transported medium. It is used for water,
steam, gases and other non-aggressive liquids
for working pressures and temperatures:
Swing check valve is not a shut-off valve. If
tightness is required, shut-off valve must be
also inserted into the pipeline.
Technical description
Swing check valve is a full bore valve. Disc
fits on the seat sealing surface and is carried in
an arm revolving on a special hinge pin. Valve
bonnet is inclined up to DN 400, for DN 500
and DN 600 is flat.
Connection
Flanges as per DIN 2501 and DIN 2526,
Form C. Face-to-face dimensions as per
DIN 3202/F6. Basic connecting dimensions
are given in the table.
Materials
Body, bonnet, disc cast iron (GG-20)
Pin stainless steel (13Cr)
Sealing surfaces brass
Testing
Swing check valve is tested as per DIN 3230.
Installation
Valve can be installed either into horizontal or
vertical position. In vertical pipeline disc must
be in upper position and flow direction must
be upwards and follow the arrow on the body
Control
Self-acting by the pressure of working
medium on the valve disc which in the closed
position avoids reverse flow of medium.
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