Abstract: A pneumatic safety valve prevents dangerously rapid outflow of pressurized air in the event that an air hose ruptures or a pneumatic tool is accidentally decoupled from the hose downstream of the valve. The valve has an internal air conduit in fluid communication with the inlet and outlet ports. The air conduit cooperates with a pivotal flap that selectively closes to prevent a sudden discharge of air in the event of a hose rupture or an accidental decoupling of the pneumatic tool from the hose. By containing the highly pressurized air and preventing the air from rapid discharge, the valve prevents the air hose from flailing or whipping violently, thus eliminating the physical dangers to operators and other personnel in the vicinity of the rupture. This simple and inexpensive valve ensures safe containment of hose ruptures or of accidental disconnections of the pneumatic tool from the high-pressure hose.

Abstract: A pneumatic safety valve prevents dangerously rapid outflow of pressurized air in the event that an air hose ruptures or a pneumatic tool is accidentally decoupled from the hose downstream of the valve. The valve has an internal air conduit in fluid communication with the inlet and outlet ports. The air conduit cooperates with a pivotal flap that selectively closes to prevent a sudden discharge of air in the event of a hose rupture or an accidental decoupling of the pneumatic tool from the hose. By containing the highly pressurized air and preventing the air from rapid discharge, the valve prevents the air hose from flailing or whipping violently, thus eliminating the physical dangers to operators and other personnel in the vicinity of the rupture. This simple and inexpensive valve ensures safe containment of hose ruptures or of accidental disconnections of the pneumatic tool from the high-pressure hose.

Abstract: An improved hose rupture valve is disclosed for preventing the excessive and dangerous flow of fluid through a high pressure hose when the hose is ruptured or the pneumatic or hydraulic tool at the end thereof is accidentally decoupled downstream of the valve. The valve comprises a housing containing a cylinder having a pivotally mounted vane. During normal operation, the vane is held in an open position by biasing means such as a spring. When the hose downstream of the valve is ruptured or accidentally decoupled from the pneumatic or hydraulic tool, the pressure within the cylinder suddenly decreases relative to the pressure within the housing and the vane pivots into a closed position to prevent the excessive flow of fluid through the outlet port of the valve.