1
(Two words) They are quick opening/closure valves.
2
(Two words) The tilting disc check valve, as check valve is opened when flow goes through one direction and closes at backflow.
4
(Two words) Its operation is slow, but it gives accuracy and stability to position the closure member, which is necessary in some control valves.
5
Types of valves (Quarter-turn).
7
These valves are suitable for regulating flow and pressure. They are prepared to work against all column water pressure without cavitation.
9
Types of valves (Multi-turn).
10
Type of movement.
11
International Association of Plumbing and Mechanical Officials.
12
This valve is achieved throttling the flexible tube of the valve named elastic sleeve which is the only part in contact with the medium.
13
American Society for Testing and Materials.
14
American National Standards Institute.
15
International Organization for Standardization.
