A check valve having a removable seat portion with integral flapper (valving means) is disclosed. The seat portion can be removed through a port in the valve body without breaking any connection of the valve body to the associated fluid flow lines. The seat portion can comprise two sections that secure between them sealing means (e.g., an O-ring) for creating a fluid tight seal when the valving member of the check valve is closed against the seat portion. A fluid tight seal is created between the valve seat portion and valve body by tapers on the valve s...
A removable valve seat for a check valve that has a pivotably mounted valving member movable between open and closed positions, the check valve comprising a check valve body and a valve seat having a first section and a second section, which sections are separable from one another and from the check valve body but which sections are normally attached to one another and to the check valve body, the check valve body and each section having a bore for the flow of fluid therethrough; a portion of the first section normally being next to a portion of the chec...
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