Abstract: A fool proof slide gate valve wherein a slide gate valve body houses a gate which is constructed to encompass a wedge and its related components whereby when an external force is transmitted to said wedge, the gate effectively opens flow or closes flow to a medium flowing through a conduit connected to said fool proof slide gate valve, during which time of operation the gate remains sealed at all times preventing exposure of the component parts to the medium flowing through the conduit and other environmental matter and debris.