PT - LIGHT SERVICE
| MODEL | DESIGN | SIZES | RATINGS | APPLICATION & 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
| MODEL | DESIGN | SIZES | RATINGS | APPLICATION & 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
| MODEL | DESIGN | SIZES | RATINGS | APPLICATION & 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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