A ball valve, one type of quarter turn valve, is quite literally a ball placed in a passageway through which fluid flows. The ball has a hole through it, by which the valve opens and closes. When the ball is positioned so that the hole runs the same direction as the passageway, the fluid simply flows through the hole, and the valve is open. However, when the ball is positioned so that the hole is perpendicular to the passageway, the fluid cannot pass through, and the valve is closed. The ball is controlled from outside the valve, often with a handle that is turned 90 degrees, or a quarter turn, back and forth to open and close the valve.Because of the nature of the ball valve, it works very well for situations in which a flow needs to be completely shut off, such as the shut-off valve on the main pipeline.


Sizes Pressure Material Design Automation
1/2 inch Class 150 ASTM A216 WCB  Floating Ball  Lever
3/4 inch Class 300 ASTM A216 WCC  Trunnion Mounted Ball  Wheel
1 inch Class 600 ASTM A105  Fully Welded Body  Wormgear
2 inch Class 900 ASTM A105N  Orbit Ball Valve  Electric
3 inch Class 1500 ASTM A216 LCB  Segment Ball  Pneumatic
4 inch Class 12500 ASTM A216 LCC  Double Block and Bleed  Hydraulic
6 inch   ASTM A350 LF2  Bore  Gas Over Oil
8 inch   ASTM A350 CF8M  Full Bore  Application
10 inch   ASTM A350 CF3M  Reduce Bore  Metal to Metal
12 inch   ASTM A182 F304  V Port  Cryogenic
16 inch   ASTM A182 F316  Multi Port  High Pressure
18 inch   F51  Connection  
20 inch   F55  Flanged End  
22 inch      BW End  
24 inch      SW End  
26 inch      Thread End  
28 inch      Wafer End  
30 inch      Clampe End  
36 inch      RJT End