Patent ID: 8733381
Filing Date: 2014-05-27
Classification: E03B,F16K,Y10T

Abstract:
1. A system for protecting a fluid supply from a contaminant, the system comprising: an anchor check valve having an inlet end and an exit end, the anchor check valve including a flapper in communication with a sealing surface, wherein fluid can flow through the anchor check valve from the inlet end to the exit end but is prevented from flowing through the anchor check valve from the exit end to the inlet end; a dry-barrel fire hydrant in proximate fluid communication with the anchor check valve, the dry-barrel fire hydrant having a valve operating mechanism; and a hydrant shoe coupled to the anchor check valve, the hydrant shoe having a valve assembly adjustably connected to the valve operating mechanism of the dry-barrel fire hydrant; wherein the anchor check valve includes a first mechanical joint arranged at the inlet end of the anchor check valve and a second mechanical joint arranged at the exit end of the anchor check valve; wherein the first mechanical joint includes at least a first non-threaded male portion extending within an inner portion of a pipe of a fluid supply, a first shoulder portion having an outermost diameter greater than an outermost diameter of the first non-threaded male portion, and a first flange portion, the first shoulder portion being disposed between the first flange portion and the first non-threaded male portion; and wherein the second mechanical joint includes at least a second non-threaded male portion extending within an inner portion of the hydrant shoe, a second shoulder portion having an outermost diameter greater than an outermost diameter of the second non-threaded male portion, and a second flange portion, the shoulder portion being disposed between the second flange portion and the second non-threaded male portion.