VAHN-TECH Top Entry Ball Valves are used in pipelines and critical process applications. These valves are fully in-linefiled repairable, thus eliminating long down times. The bolted construction allows disassembly on-site for inspection and possible repair. Ball and Seats can be removed and replaced in-line. The valves have standard design features such as a built-in cavity relief mechanism, anti-static, emergency sealant injection, drain and vent.
Standard Features
- Trunnion-mounted design.
- Triple-barrier stem seals.
- Anti-blowout stem design.
- Stem emergency grease fitting.
- Factory-positioned external stops for a permanent reference to open and closed positions.
- Low-friction, metal-backed, self-lubricating PTFE sleeve bearings and thrust washers.
- Double-piston effect (DPE) seat rings (double-sealing barrier in both directions)
- Double block-and-bleed capability
Specifications
| Design Standard | API 6D / ISO 14313 / ASME B16.34 |
| Size Range | 2” – 48” |
| Flow Bore | Full Bore / Reduce Bore |
| Pressure Rating | Class 150 – 1500 |
| Working Temperature | -46˚C ~ +608˚C -50˚F ~ +1126˚F |
| End Connection | ANSI B16.5 - Flange ASME B16.25 - Butt-Weld |
| Face-to-Face | ASME B16.10 |
| Fire Safe | API 607 |
| Test & Inspection | API 598 / API 6D |
