A valve assembly having a reinforced valve seat

F - Mech Eng,Light,Heat,Weapons – 16 – K

Patent

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Details

F16K 3/02 (2006.01) F16K 3/316 (2006.01) F16K 27/04 (2006.01)

Patent

CA 2705559

A knife gate valve includes a valve body defined by a first and second body halves. The valve halves are assembled to define a flow path, a knife gate channel and a seat channel. A knife gate is disposed between the body halves and is adapted to traverse the gate channel. The knife gate is configured to be in an open position to allow process flow through the valve and a closed position to prevent process flow through the valve. A seat assembly is positioned within the channel guide and is defined by a horizontal segment, a pair of vertical segments and a lower segment. The seat assembly is compressed between the first and second valve body halves. At least one reinforcing plate is disposed within a portion of the horizontal segment, such that the horizontal segment maintains its rigidity when the knife gate traverses the seat assembly.

L'invention concerne une vanne à guillotine comprenant un corps de vanne défini par un premier et un deuxième demi-corps. Les demi-corps de vanne sont assemblés pour définir un passage d'écoulement, un évidement de guillotine et un évidement de siège. Une guillotine est disposée entre les demi-corps et est prévue pour traverser l'évidement de guillotine. La guillotine est configurée de façon à pouvoir se trouver en position ouverte afin de permettre à un flux de traitement de traverser la vanne et en position fermée pour empêcher le flux de traitement de traverser la vanne. Un ensemble siège est positionné à l'intérieur du guide d'évidement et est défini par un segment horizontal, une paire de segments verticaux et un segment inférieur. L'ensemble siège est comprimé entre le premier et le deuxième demi-corps de vanne. Au moins une plaque de renfort est disposée à l'intérieur d'une partie du segment horizontal, de telle sorte que le segment horizontal conserve sa rigidité lorsque la guillotine traverse l'ensemble siège.

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