Pressure seal valves
Velan gate, globe, and check pressure seal valves are designed for high pressure and high temperature applications, proven in thermal and nuclear power plants worldwide. Trusted for HP steam services, they’re also ideal for hydrocarbon and petrochemical processing, ensuring reliable performance.
API 622 qualified packing and ISO 15848-1 fugitive emission options available.
Body and bonnet are made from high-quality forgings throughout the size range. Available in flexible wedge gate, parallel slide gate, stop globe, y-pattern, stop check, piston check, swing check, and tilting disc check.
Pressure seal design increases the bonnet gasket loading force as internal pressure increases for use in high temperature/pressure applications. Velan's innovative live loaded bonnet bolting maintains constant load on seal gasket and is standard on NPS 6 (DN 200) and up.
Close attention is paid to body and disc guide tolerances to minimize the potential for galling, binding, and/or gouging during valve opening and closing. For stainless valves and high temperature service, hard-faced grooves are precision-guided within welded-in machined guides.
| Pressure | ASME 150-4500 |
|---|---|
| Pressure | PN 2.5-400 |
| Size | NPS 2-60 (DN 50-1500) |
| Tests and Design Standards | ASME B16.10 Flanged Long or Short Pattern, ASME B16.11, ASME B16.20, ASME B16.25, ASME B16.34, ASME B16.47, ASME B16.5, ASME Section III, ASME Section VIII, ASME Section IX, EN 1092, EN 1333, EN 12516-2, EN 12266-1&2, ISO 15848-1, MSS SP-144, API 594, API 600, API 603, API 609, API 623, API 622, API 624, API 598 |
