Paddle blind
A paddle blind, or spade, is a handled solid plate inserted between two flanges to provide a physical line block. It has no open-flow section and its companion concept is the paddle spacer; it is therefore distinct from a blind flange, which is itself an end-closing flange. Dimensions, thickness, facing, material and installation clearance must match the existing joint.
Application and duty
Physical line blocking between two flanges using an identifiable solid plate