Valve sealing arrangement and a valve seat
AssigneeNeles Finland Oy
InventorsTommi Bergström, Pietari Skott, Antti Kuitunen
Life of this patent
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Abstract
A valve sealing arrangement, including a valve body, and a closing member including a closing member contact surface, and a seat, having a center axis, and provided with a sealing portion with a first sealing surface for making contact with the closing member and a back sealing portion with a second sealing surface for making contact with a surface of the valve body. The seat also includes a bellows between the first sealing surface and the second sealing surface wherein the bellows including bellow members wherein adjacent bellow walls form either inwardly open fold or outwardly open fold and wherein one or more of the bellow members extends in a direction that is oblique to the center axis of the seat.
Claims13
A valve sealing arrangement, comprising:
- a valve body, and
- a closing member comprising a closing member contact surface, and
- a seat, having a center axis, and provided with a sealing portion with a first sealing surface for making contact with the closing member and a back sealing portion with a second sealing surface for making contact with a surface of the valve body, wherein
- the seat is further provided with a bellows between the first sealing surface and the second sealing surface wherein the bellows comprises bellow members wherein adjacent bellow walls form either inwardly open fold or outwardly open fold, and
- one or more of the bellow members extends in a direction that is oblique to the center axis of said seat wherein
- at least one of the bellow members is an arrow-like bent bellow member comprising two folds, or fold sections, which extend in different directions.
A valve seat, comprising:
- a sealing portion with a first sealing surface for making contact with a closing member and
- a back sealing portion with a second sealing surface for making contact with a surface of a valve body, wherein
- the seat is further provided with a bellows between the first sealing surface and the second sealing surface wherein the bellows comprises bellow members wherein adjacent bellow walls form either inwardly open fold or outwardly open fold, and one or more of the bellow members extends in a direction that is oblique to the center axis of said seat, wherein at least one of the bellow members is an arrow-like bent bellow member comprising two folds, or fold sections, which extend in different directions.
Dependencies are inferred from the claim text.