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DE - LIGHT SERVICE

MODELDESIGNSIZESRATINGSAPPLICATION & DESIGN
LIGHT SERVICE
Reduced Flow Ball (RFB) Trunnion mounted, reduced bore Up to 48” ANSI 150 to 4500
API 2000 to 20000
Basic control capability
Tight shut-off
Suitable for low differential pressures
Hemisphere-molded Ball (HMB) Segmented ball, trunnion mounted Up to 20” ANSI 150 to 2500
API 2000 to 10000
Light control capability
Tight shut-off
Suitable for low differential pressures
Unidirectional

MEDIUM SERVICE

MODELDESIGNSIZESRATINGSAPPLICATION & DESIGN
MEDIUM SERVICE
V-Shaper Ball (VSB) V-port seat, trunnion mounted Up to 48” ANSI 150 to 4500
API 2000 to 20000
Good control capability (V shape designed to meet process conditions)
Tight shut-off
Fair cavitation resistance
Unidirectional
Disk Controller Ball (DCB) Trunnion mounted with drilled disk Up to 20” ANSI 150 to 4500
API 2000 to 20000
Good control capability (Drilled disk designed to meet process conditions)
Tight shut-off
Moderate cavitation resistance
Light noise reduction
Unidirectional
Vibration control
Suitable for gas application

SEVERE SERVICE

MODELDESIGNSIZESRATINGSAPPLICATION & DESIGN
SEVERE SERVICE
Stream Tuner Ball (STB) Multistage ball, trunnion mounted Up to 48” ANSI 150 to 2500
API 2000 to 10000
Multistage ball (stage number, hole configuration and general trim design are chosen to meet process conditions; the design is carried out by means of CFD analysis and validated by laboratory measurement)
Tight shut-off
Good control capability
Vibration control
Good cavitation resistance
High differential pressure for gas service
Noise reduction
Noiseless Ball (NLB) Special multistage ball, trunnion mounted Up to 20” ANSI 150 to 2500
API 2000 to 10000
Multistage ball (stage number, hole configuration and general trim design are chosen to meet process conditions; the design is carried out by means of CFD analysis and validated by laboratory measurement)
Tight shut-off
Good control capability
Vibration control
Excellent cavitation resistance
High differential pressure for gas service
Noise reduction

 

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