Ball valves are most widely used valves in the world. Main advantages aver Needle valve or Globe valves are
1. Ball Valves gives full flow in open position.
2. No throttling or pressure drop across the valve.
3. Useful even for high-density fluid.
4. Contaminated particles dose not affect the flow
5. Full flow at ¼ turn.
'PRIME' make ball valves has been divided into two categories namely Instrument Ball Valve and Process Ball Valve.