Patent ID: 7575018
Filing Date: 2009-08-18
Classification: F16K,Y10T

Abstract:
1. An alignment device for maintaining the relative alignment between a gate valve assembly and a valve bonnet positioned over the gate valve assembly wherein the valve bonnet has an interior surface, and the alignment device comprises: a pair of substantially identical components wherein the components are securely connectable to each other when the alignment device is attached to the gate valve assembly; each one of the components comprises: a body that has a peripheral portion with a peripheral wall, the peripheral portion is adjacent to the interior surface of the valve bonnet when the valve bonnet is positioned over the gate valve assembly; and the body has a transverse edge, the transverse edge contains an opening that receives a part of the gate valve assembly when the components are connected together wherein the peripheral wall has an exterior surface, and the exterior surface has a pair of acutely disposed surfaces that intersect at an apex and the apex defines a flat surface, and at least a portion of the apex is in contact with the interior surface of the valve bonnet.