Magnetic latch for pressure relief valve

摘要

A magnetic latch for a pressure or vacuum relief valve is disclosed. The pressure or vacuum relief valve includes a cover hingedly connected to a body and a valve seat defined on the body. The latch includes a housing having an open end and connected to either the valve cover or the body. A magnet is mounted within the housing. A striker plate is connected to the other of the valve cover or body in a position to engage the open end of the housing and to be spaced by a gap from the magnet in the valve closed position. The gap between the striker plate and the magnet is adjustable by varying the position of the housing relative to its mounted position. A spring is positioned between the striker plate and the cover or body and biases the striker plate toward the housing in the valve closed position to provide self-alignment and via its adjusting screw to ensure proper engagement of the striker plate with the open end of the housing.