High frequency metal seated ball valve
×
Consult
Working condition
| Pressure Rating | CLASS 150 to CLASS 1500 (PN 10 to PN 260) |
| Nominal Size | NPS ½ to NPS 16 (DN 15 to DN 400) |
| Seat Leakage Class | ANSI FCI 70-2 CLASS VI or higher |
| Applicable Media | Gas phase |
| Temperature Rating | Up to 220°C |
| Cycling Life | 100,000 to 1,000,000 cycles per year |
| Stroking Speed | Typically 1–3 seconds (faster speeds available upon request) |
| Actuation Methods | Pneumatic, Hydraulic |
Pain Points and Proposal
1. External Leakage: packing wear due to frequent opening/closing without any compensation, finally external leakage occur.
2. ① High-frequency opening and closing as well as high-speed movements are likely to cause bonding of metal sealing pairs, resulting in premature damage.
② Solid powders in the medium tend to accumulate in the spring chamber, causing the valve's opening and closing torque to gradually increase, thus leading to jamming.
③ Ultra-fine particles easily accumulate in bushings, bearing pocket, seats, etc., causing scratches on the stem surface, increased valve torque, or even cannot operate the valve.
3. Internal Leakage:
① High-frequency cycling and rapid actuation easily cause premature damage due to metal to metal "bite" by sealing surface pairs.
② Wrong dimensional tolerance chain design leads to inconsistent product quality.
2. Bow-groove ball design
3. Hardened flow-path liner
Reference
-
● CLASS 150lb & 300lb, sizes from 1.5” to 10”;
● Antewei supplied all 25 pneumatic valves;
● Commissioned in May 2020, operating flawlessly to date.