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Val-Matic Tilted Disc Check Valves from HMA Flow & Industrial achieve maximum strength by utilising large-diameter pins constructed from high tensile materials. These materials provide superior wear and gall resistance as a result of their high Brinnell Hardness (BHN), together with a selected difference in hardness between mating parts.
Although lubrication is not essential to the operation of the Val-Matic Tilted Disc Check Valves from HMA Flow & Industrial, grease fittings are used to assure even longer life and greater dependability. A unique connection provides an accurate indication of the disc position at all times. Standard on sizes 6″” and larger.
Superior wear and gall resistance are achieved through the use of materials having a high BHN, together with a selected difference in hardness between the disc and seat rings. Leak-tight seating is attained at all working pressures by utilizing a 20° seating angle, which provides excellent sealing characteristics. This angle is, by nature, self-releasing, and therefore prevents any binding of the disc and seat.