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  • MAIN FEATURES

    MAIN FEATURES

    High capacity (Cv) | High rangeability | Tight shut-off | Special design for sensitive control | Compact design | Low emission stem packing | Fast operating time | Fire-safe design

  • Multi-stage ball valves

    Multi-stage ball valves

    Multi-stage ball valves are designed to operate against high pressure drops providing excellent control capability and noise attenuation during a long service life.

  • CFD ANALYSIS, FLOW CALCULATION & TESTING FACILITIES

    CFD ANALYSIS, FLOW CALCULATION & TESTING FACILITIES

    DAFRAM calculation software is the primary instrument for sales dept. engineers to evaluate a preliminary solution before the fine tuning activity carried out during engineering phase.

  • LIGHT SERVICE

    LIGHT SERVICE

    Reduced Flow Ball (RFB): Trunnion mounted, reduced bore | Up to 48” | ANSI 150 to 4500 - API 2000 to 20000
    Hemisphere-molded Ball (HMB): Segmented ball, trunnion mounted | Up to 20” | ANSI 150 to 2500 - API 2000 to 10000

  • MEDIUM SERVICE

    MEDIUM SERVICE

    V-Shaper Ball (VSB): V-port seat, trunnion mounted | Up to 48” | ANSI 150 to 4500 - API 2000 to 20000
    Disk Controller Ball (DCB): Trunnion mounted with drilled disk | Up to 48” | ANSI 150 to 4500 - API 2000 to 20000

  • SEVERE SERVICE

    SEVERE SERVICE

    Stream Tuner Ball (STB): Multistage ball, trunnion mounted | Up to 48” | ANSI 150 to 2500 - API 2000 to 10000
    Noiseless Ball (NLB): Special multistage ball, trunnion mounted | Up to 48” | ANSI 150 to 2500 - API 2000 to 10000

Slide control

Models overview

Details
Category: Control Ball Valves

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

 

ico pdf Download DAFRAM Control Ball Valves Catalogue

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