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| SLANTING DISC CHECK (PIVOT OFF CENTER) | ||
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The Slanting Disc Check is a unique valve, Fig. 4, for example, the main body is two
(2) pieces to allow a greatly enlarged flow area thru the disc and seat section.
The disc pivots off center with approximately 30% of the disc area above the
pivot point to offer resistance against the 70% disc area below the pivot point.
Hence, this type check has built in non-slam shut off characteristics.
The shut off seating angle is 55 degrees. The disc swings open thru this 55 degree seat angle, traveling a short distance, stopping at 15 degrees off the horizontal. Hence, the disc travels only a short distance allowing minimal reverse flow and non-slam shut off. This type valve is available with hydraulic controls and disc position indicators. |
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