Every valve has its own limits.

Ball Valves:
1) limited to pressure on the plastic seats.
2) typically used for higher pressure applications
3) more expensive to construct
4) Is larger for the same pipe size
5) unrestricted flow when open

BUTTERFLY VALVES:
1) take less space than ball valves
2) form a tight closing seal
3) a rubber seated butterfly valve requires high torque to remove the vane from the seat
4) have lower pressure limits
5) typically used as control valves
6) less expensive

BALL VALVES

CHECK VALVES

SAFETY VALVES

REDUCING VALVES

BALANCING VALVES