11. There is normally a bung or stopcock that allows draining of the crankcase before starting. 12. Finally, it is of vital importance to make sure that the stopcock is tightly closed. 13. Special glass stopcocks are made for vacuum applications, such as in use with vacuum manifolds. 14. Stopcock grease is always used in high vacuum applications to make the stopcock air-tight.15. Stopcock grease is always used in high vacuum applications to make the stopcock air-tight. 16. Two types of valves used in laboratory glassware are the stopcock valve and the threaded plug valve. 17. Its inside was made up of cylindrical chambers connected by pipes and fitted with stopcocks and valves. 18. Valves are fitted and the installations protected by lockable stopcock covers normally fitted flush with the ground. 19. He goes crazy and ends up breaking the stopcock causing a flood in the whole fire station. 20. The soft grade is for large stopcocks and ground joints, desiccators, and for lower temperature use.
