Ss Ball Valves

ball valves
A one-way valve that is opened and closed by pressure on a ball that fits into a cup-shaped opening
(ball valve) any valve that checks flow by the seating of a ball
(Ball valve) A ball valve is a valve with a spherical disc, the part of the valve which controls the flow through it. The sphere has a hole, or port, through the middle so that when the port is in line with both ends of the valve, flow will occur.
(Ball Valve) A simple non-return valve consisting of a ball resting on a cylindrical seat within a liquid passageway.

ss
Social security
Saints
Schutzstaffel: special police force in Nazi Germany founded as a personal bodyguard for Adolf Hitler in 1925; the SS administered the concentration camps
The Schutzstaffel (, Protection Squadron), abbreviated SS—or with stylized "Armanen" Sig runes —was a major Nazi organization under Adolf Hitler and the Nazi Party.
Shortstop
United States Secret Service: the United States intelligence agency that protects current and former presidents and vice presidents and their immediate families and protects distinguished foreign visitors; detects and apprehends counterfeiters; suppresses forgery of government securities and