Xomox Corporation

Bernd Krause

William F Scroggin

Wayne L Hoelscher

A recessed seat retainer for a valve is secured in an annular recess on the face of a valve body by a totally internally disposed key system which does not create an external leak path. An annular keyway is formed in the cylindrical sidewall of a seat retainer. A key extends from the cylindrical sidewall of an annular recess formed in an axial face of the valve body. The key is received in the keyway and locks the retainer against axial dislodgement from the valve body.

Valve seat retainer having a full uninterrupted gasket face

A novel seat especially adapted for a butterfly valve is provided which is formed both of metal and 'soft' material so as to furnish a 'bubble tight' seal in normal operating conditions and a metal-to-metal seal in fire situations. The seat is uniquely constructed and is permanently deformed by the disc or closure member of the valve to form a precise size and configuration corresponding to the size and configuration of the disc.

Fire safe seat for a valve

A valve seat especially adapted for a high performance butterfly valve is characterized by flexing axially rather than stretching radially when the seat interfaces with a closure member. In the preferred form, a seat has a support member embedded therein to provide restorative forces which tend to urge the valve seat to a predetermined position in response to axial flexing.

Growing community of inventors

Cincinnati, OH, United States of America

Bernd Krause