sector shaped google valve

1.The line blind valve is permanently installed in a pipeline and is quickly interchanged between the open and closed positions. 2.The blind valve typically has a locking mechanism that loosens or tightens the blind, and a safety feature which prevents its actuation while in each position. 3.By turning the handwheel, the flange is freed and operators can turn it to their desired position, and the handwheel can be turned back to lock the flange in place. It provides an easier means of changing the blind valve and saves operators valuable time when enacting positive isolation in a system.