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The PROVAL segmental ball is an eccentric plug, high performance rotary control valve. Designed for use in a wide variety of applications ranging from low pressure, high “Cv” to slurry and pulp services, to oil and gas services. The PROVAL segmental ball can handle shut-off pressure drop up to 50bar. Operating temperatures can from -50°C to 450 °C.
The PROVAL segmental ball control valves consist of a straight valve body with less flow resistance and separable plug with flow guide that rotates eccentric.
Features
· Large capacity
The Proval segmental ball valves provide larger valve capacities than those of the globe valves.
For example, an 8-inch Proval segmental ball valve provided by a 10-inch globe valves.
· Large rangeability
The rangeability of Proval segmental ball valves is 100:1, much larger than that of butterfly valves and that (50:1) of globe valves. Thus, each of Proval segmental ball valves can cover a very wide flow range.
· Excellent shut-off performance
The Proval segmental ball valves render excellent shut-off performance -0.01% of the valves for standard valves for complete shut-off (ANSI B16, 104 Class VI) for valves incorporated with a Teflon seat (=soft seat).
· Compact & Lightweight
The Proval segmental ball valves are more compact and lightweight than globe valves of corresponding sizes and can be installed in various directions, thereby greatly facilitating installation and maintenance.
· Dirty and gummy service
The Proval segmental ball valves employ an open yoke type plug and a through type valves body which ensures no entrapped flow. Thus, they can be used for dirty and gummy service as well as for regular service.
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