Patent ID: 6076471
Filing Date: 2000-06-20
Classification: B61D,B65D,F16K

Abstract:
A manway cover assembly engageable with the manway nozzle of a railroad tank car, comprising:a housing connectable to the tank car, said housing having a top surface, a bottom surface and a cavity therein;a safety vent attachable to said housing and defining a fluid flow path including an inlet and an outlet, said safety vent having a flow restrictor disposed therein for substantially blocking the fluid flow path under normal service conditions while permitting flow from the inlet to the outlet under abnormal pressure surge conditions, said safety vent further having a surge protector disposed in said cavity of said housing having an elongated member extending downwardly toward the tank car and terminating at a distal end; anda tube connected to said housing, said tube extending downwardly toward the tank car and surrounding said elongated member.