RAILWAY TANK CAR SHUTOFF-DRAIN DEVICE Russian patent published in 2006 - IPC B61D5/00 B65D90/64 

FIELD: transport engineering.

SUBSTANCE: invention relates to devices for discharging liquid and viscous products from railway tank cars. Proposed shutoff-drain device has drain neck 9 with independently controlled main and backup rotary disk gates and end plug. In open position of main and backup disk gates, their working disks are arranged at different sides from axis of tank car drain neck. Barrel of tank is connected by flange 6 to flanged housing 7, 8 of main and backup rotary disk gates to form tank drain neck 9 by connected housings. Beads 12 and 13 are made on connecting surfaces of flange 6, and mating grooves 14 and 15 are made in housing 7 and 8 for mating with beads of flange through sealing gaskets 16 and 17. Shielding half-rings-lips 29 and 30 are secured in housing 7 and 8. Ring collector 35 of liquid product with directed draining device is secured on plug.

EFFECT: improved operation reliability and safety.

5 cl, 6 dwg