Large forged bolted bonnet valves
Velan large forged bolted bonnet valves are built for high pressure and high-temperature needs, with a proven track record in thermal and nuclear power plants, as well as oil and gas applications worldwide. Reliable and durable for the toughest environments.
Fugitive Emissions
API 622 qualified packing options available.
Design
Body and bonnet are made from high-quality forgings throughout the size range. Available in flexible wedge gate, parallel slide gate, globe stop-check, globe needle-disc, y-pattern, piston check, swing check, and tilting disc check.
Bonnet
Stronger leakproof bolted body-bonnet joint tightness with a higher bolting torque. Recommended over pressure seal valves for any applications with pressure below 500 psi (34.5 bar). Options for lip seal weld on bonnet for greater emissions control.
Guiding System
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 250-320 |
| 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, API 594, API 600, API 603, API 609, API 623, API 622, API 624, API 598 |
