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.
Control
Self-acting by the pressure of working medium on the valve disc
which in the closed position avoids reverse flow of medium.
Various design
L10 - basic
L11 - with lever and counterweight
L12 - with by-pass
L17 - with lever and counterweight and by-pass
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Application
Self-acting valve preventing from reflux of
transported medium. Valves in design -016
are used for aggressive liquids, steam, gases
considering type, temperature and
concentration. Maximum 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 straight flow valve. Disc
fits on the seat sealing surface and is carried in
an arm revolving on a special hinge pin. Disc
is pushed to the sealing surfaces during the
reverse flow. Connection
Flanges as per ÈSN 131060 & 131061. Face-
to-face dimensions as per ÈSN EN 558. Basic
connecting dimensions are given in the table.
Materials
Body, bonnet, disc
cast stainless steel (DIN 1.4410)
Pin stainless steel (13Cr)
Sealing surfaces basic material
Testing
Swing check valve is tested as per DIN 3230,
(ÈSN 133060, part 2). 2. |
