초록 ▼

A manway cover assembly to cover an opening of a tank car, defined by an upstanding manway nozzle. The manway cover assembly comprises a manway cover housing, a safety vent and a manway nozzle gasket. The safety vent includes a body mounted on the manway cover housing. The safety vent further includ

A manway cover assembly to cover an opening of a tank car, defined by an upstanding manway nozzle. The manway cover assembly comprises a manway cover housing, a safety vent and a manway nozzle gasket. The safety vent includes a body mounted on the manway cover housing. The safety vent further includes a surge protector and a rupture disk. The rupture disk is designed to open at a known pressure and allow controlled venting of the pressure in the car. The manway cover housing defines a bore which contains the surge protector of the safety vent. The manway cover housing includes a tube extending downwardly and surrounding the surge protector.

대표청구항 ▼

[ What is claimed is:] [1.] 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

[ What is claimed is:] [1.] 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.