Patent ID: 7325783

Claim:
A valve seat, comprising: a tubular member having an outer diameter surface for mounting in a valve body, a rearward end, a flat face on a forward end for sliding contact with a valve element, and a passage having an axis and extending from the rearward end to the face; the face having concentric inner and outer diameter edge portions; an outer flange extending radially outward from the tubular member for relieving bearing stress, the outer flange having a forward side that defines the outer diameter edge portion of the face, the outer flange having a rearward side facing in a rearward direction, the outer flange having a base where the outer flange joins the tubular member and a free outer edge that defines an outer diameter of the face; and an inner flange extending radially inward from the tubular member for relieving bearing stress, the inner flange having a forward side that is located in a common plane with the outer flange and which defines the inner diameter edge portion of the face, the inner flange having a rearward side facing in a rearward direction, the inner flange having a base where the inner flange joins the tubular member and a free inner edge that defines an inner diameter of the face.