Ball Valves

Ball Valve
... A ball valve is a valve with a spherical disc, the part of the valve which controls the flow through it ... a hole, or port, through the middle so that when the port is in line with both ends of the valve, flow will occur ... When the valve is closed, the hole is perpendicular to the ends of the valve, and flow is blocked ...

Valve - Images
... Globe valve A valve controlled by a wheel Large butterfly valve Cast iron butterfly valve Cast iron butterfly valve Hastelloy ball valve Stainless steel gate valve ...

Three-way and Four-way Ball Valves
... Three-way ball valves have an L- or T-shaped hole through the middle ... It is easy to see that a T valve can connect any pair of ports, or all three, together, but the 45 degree position which might disconnect all three leaves no ... The L valve can connect the center port to either side port, or disconnect all three, but it cannot connect the side ports together ...