RAILWAY VEHICLE AIR MAIN ANGLE COCK Russian patent published in 1999 - IPC

FIELD: railway transport; pneumatic brake systems. SUBSTANCE: angle cock has body 1 with inlet hole 2, intermediate outlet hole 3, hole 4 of angle branch pipe 5 and atmosphere hole 6, shutoff member with drive and extreme position stops. Shutoff member is made in form of rotary ball plug 21 with curvilinear through channel 22. Curvilinear channel 22 is made to provided alignment of pair of its outlet holes in each corresponding operating position of rotary ball plug 21 with outlet hole of inlet union 9 and hole 4 of angle branch pipe, or with hole 4 of angle branch pipe and intermediate outlet hole 3 with simultaneously hermetically closing intermediate outlet hole 3 or outlet hole of inlet union 9, respectively. EFFECT: simplified design, enhanced reliability and convenience in use and servicing of unified angle cock. 12 cl, 5 dwg