Abstract: Embodiments of a gate valve equalization system comprise: a gate valve; a gate; a preloading valve arrangement; a floating coupler assembly; a relief valve arrangement; and a means for control. The preloading valve arrangement permits fluid to enter the valve body from the upstream side of the gate. The means for control serves as a control interface allowing engagement of the floating coupler assembly and opening/closing of the gate valve. Engagement of the floating coupler, engages the assembly relief valve arrangement and allows redistribution of fluid pressure and circulation of fluid from one side of the gate to opposing side of the gate within the gate valve.

Abstract: A preloading gate valve system is defined by preloading valve assembly integrated into a gate valve. The preloading gate valve system comprises: a gate valve; a gate; a preloading valve arrangement; and a means for control. The gate valve has an upstream cavity and a downstream cavity, and a gate disposed within the gate valve, wherein the gate is movable between open and closed position of the gate valve. The preloading valve arrangement defines an at least one preloading cavity and an at least one preloading valve. The at least one preloading cavity permits fluid to enter the gate valve through the at least one preloading cavity, through the at least one preloading valve, and into the gate valve. The means for control serves as a control interface allowing opening/closing of the gate.

Abstract: Embodiments of a gate valve equalization system comprise: a gate valve; a gate; a preloading valve arrangement; a floating coupler assembly; a relief valve arrangement; and a means for control. The preloading valve arrangement permits fluid to enter the valve body from the upstream side of the gate. The means for control serves as a control interface allowing engagement of the floating coupler assembly and opening/closing of the gate valve. Engagement of the floating coupler, engages the assembly relief valve arrangement and allows redistribution of fluid pressure and circulation of fluid from one side of the gate to opposing side of the gate within the gate valve.