Brochure

combines the efficiency of a rotary valve, with the energy absorbing capability of special trim, to provide
improved performance for demanding applications. The Fisher rotary attenuator design can be utilized in liquid
service to reduce cavitation and vibration effects.
The Vee-Ball with rotary attenuator has high application versatility and provides long service life.
Precise contouring of the V-notch ball provides an approximately equal percentage inherent flow characteristic,
which is optimal for most flow control applications.
n 1-stage trim
n ASME Class 150, 300, 600
n NPS 4, 6, 8, 10, 12, 14, 16, and 20
n 52 bar (750 psi) pressure drop limit
18 | Fisher
®
Cavitation-Control Technologies
Vee-Ball
™
Control Valve with Rotary Attenuator
PRODUCTION: Water treatment process.
APPLICATION: Greywater ow control.
CHALLENGE: Standard ball valve was cavitating, causing pipe vibration plus problems with the valve-
mounted instrumentation.
SOLUTION: NPS 10 Vee-Ball control valve with rotary attenuator.
RESULTS: The rotary attenuator eliminated vibration and noise caused by vibration, and instrument
issues were resolved.
PROVEN RESULTS