초록 ▼

The invention, according to the first embodiment depicted, comprises a plate-type valve having a valving element movable between a valve guard and a valve seat. The movable valving element has a plurality of flow ports formed therein each of which communicates with a port formed in the valve guard.

The invention, according to the first embodiment depicted, comprises a plate-type valve having a valving element movable between a valve guard and a valve seat. The movable valving element has a plurality of flow ports formed therein each of which communicates with a port formed in the valve guard. Too, the valve seat has ports formed therein, but the latter are out of registry with the valving element and valve guard ports. Accordingly, with the element closed upon the valve seat, fluid flow through the valve is prevented, and with the valving element removed from the seat, fluid flow is accommodated. Movement of the valving element away from and then onto the valve seat subjects the ends of the ports in the valving element to fatigue, failure and fracture. The valve seat has a circular recess formed therein, whereat the periphery of the valving element would impact, and loosely set in the recess is an impact ring. Accordingly, the shock of impact of the plate-type element on closing is less likely to precipitate fatigue and failure of the port ends; the periphery of the valving element impacts upon the impact ring, and the latter dissipates the impact forces.

대표청구항 ▼

A plate-type valve, comprising: first means defining a valve seat; and second means defining a valve guard fixed in spaced-apart relation to the valve seat; wherein one of said first and second means has means defining a flat bearing surface for receiving valving means thereon; said seat and guard h

A plate-type valve, comprising: first means defining a valve seat; and second means defining a valve guard fixed in spaced-apart relation to the valve seat; wherein one of said first and second means has means defining a flat bearing surface for receiving valving means thereon; said seat and guard have openings formed therethrough to accommodate a fluid flow therethrough; and further including valving means, interposed between said seat and guard, and independently movable therebetween (a) to accommodate removal of said valving means from said bearing surface, and to permit impacting closure of said valving means onto said bearing surface, and (b) for occluding and exposing given ones of said openings to inhibit, and to permit, fluid flow therethrough, respectively; wherein said valving means has an outermost periperal edge; said bearing surface encompasses a given area and has a given perimeter; said one means further has a recess formed about said given perimeter; and further including means set in said recess for impacting, point-contacting engagement thereof by said peripheral edge of said valving means upon the latter closing upon said bearing surface at an angle relative thereto, thereby to dissipate impacting forces of said valving means.