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Function
Today, higher velocity
and pressure of piping often requires a sophisticated check
valve rather than conventional swing type valve.
PK tilting disc check valve is designed to handle such higher
velocities, prevent damages due to turbulence and avoid "water
hammer" phenomenon in piping systems, and it is closed quickly
and quietly.
The valve is closed quickly because its pivot (hinge pins) is
shut by a very small arc. Moreover, line fluid flows both over
and under the disc, so that valve closing is cushioned by the
line fluid itself. By virtue of quick and quiet closing ability,
up to now PK tilting disc check valve has earned good reputation
as a "non-slam" check valve.
BODY
Body-cover joints of swing-check valves are machined as follows;
Class 150 : Male and female.
Class 300 and 600 : Male and female.
Class 900 and 1500 : Ring joint.
We can supply any kind of gasket per customer requirements.
SEAT RING
Seat rings are welded into valve bodies in order to prevent
turbulence and avoid damage due to corrosion seats, forged or
rolled in one piece for all dimensions, heat treated to obtain
the required surface hardness, and perfectly cleaned before
assembly.
END CONNECTIONS
Our standard production covers valves with;
FLANGED ENDS(RF) that conform to ASME B16.5 and face to face
dimensions that conform to ASME B16.10, with a raised face
serrated finish or, on request, with any other finish;
BUTT-WELDING ENDS(BW) with end to end dimensions that conform to
ASME B16.1 0; (Customer must specify the schedule required, or
class of pipe, or diameter and bore.)
RING-JOINT FLANGED ENDS(RT J) that conform to ASME B16.5 and
with end to end dimensions to ASME B16.1 0; Other Special end
connections are supplied to customer requirements. |
