Patent ID: 8894036
Filing Date: 2014-11-25
Classification: F16K,Y10T

Abstract:
1. A snap seat for attachment to a valve body opening to provide a sealing surface against which a displaceable plug seals, the snap seat comprising: an annular strip defining an annular sealing surface, said annular sealing surface being a frustro-conical surface encircling a central axis; and a grip skirt portion integrally joined to the annular strip such that an angle not greater than 90 degrees angle is formed between the grip skirt portion and the annular strip, the grip skirt portion having a plurality of slots that divide the grip skirt portion into sections, wherein the snap seat assumes an initial state in which the annular sealing surface faces away from the central axis and the sections of the grip skirt portion are non-diverging, the snap seat being resiliently deformable so as to invert into a clamping state in which the annular strip is inverted so as to face towards the central axis and the sections of the grip skirt portion diverge for gripping an undercut portion of the valve body opening.