Patent ID: 7743786

Claim:
A shut-off control device for a fluid flow line for automatically shutting off fluid flow in response to a predetermined increase in force of fluid flow, comprising: a housing having an interior flow path including an inlet end and an outlet end; a valve seat located at the outlet end; a ball stop assembly located in the housing spaced between the inlet end and the outlet end, wherein the ball stop assembly includes an adjustable stop member and a plurality of projections positioned between the inlet end and the outlet end of the housing and only extend along a portion of the housing from adjacent the outlet end to a position approximately in line with the adjustable stop member, and wherein the adjustable stop member extends through the housing from an exterior of the housing to an interior of the housing for adjustment thereof from the exterior of the housing; a compressible ball located in the interior flow path in the housing and being positioned during normal operation behind the ball stop assembly at the inlet end; and whereby a predetermined fluid flow force will cause the compressible ball to be compressed to a shape and size allowing the compressible ball to pass through an opening in the ball stop assembly and engage the valve seat at the outlet end stopping fluid flow through the shut-off control device; and wherein the housing includes an interior wall having inwardly projecting rails extending substantially an entire length of the housing and shaped and dimensioned to support the compressible ball as it moves past the ball stop within the housing by limiting side-to-side motion or the turbulence of the compressible ball to stabilize the compressible ball within the housing such that upon activation the compressible ball is stable and it can react as designed to shut off the flow of water out of the shut-off control device.