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Velan - Model BTE, BTF, TSB, BTX and TXB Series -Top Entry Trunnion Ball Valve
Top-entry trunnion ball valves are the perfect solution for both offshore and onshore systems. Convenience of operation and maintenance are essential features of our design simplifying in-line disassembly for trim inspection or internal repairs even where space is restrictive. Our valves also offer excellent corrosion resistance and superior sealing performance at both high and low pressures. Valves are manufactured in a single forged or cast piece and configured with two independent seats for a bi-directional sealing and are manufactured in accordance with customer specific requirements and international standards.
Series
- BTE-BTF-TSB-BTX-TXB
Valve design
- based on API 6D or API 6A or API 6DSS and customer requirements
Temperature range
- -150 to 662°F (-101 to 350°C)
Size
- NPS 2 - 56 (DN 50-1400)
- NPS 1.13/16 –16.3/4 (DN 46-425)
Pressure rating
- ASME 150-ASME 2500
- API 5000-API 15000
Face-to-face
- As per API 6D standard/As per API 6A standard
- End connections
RF, RTJ as per B16.5 &B16.47
- BW, Butt Welded as per B16.25
- Hub connection
- 6B, 6BX as per API6A
Body design
- Forged or cast one-piece
Seat design
- Soft or metal seated with hard facing on ball and seats
- Self relieving seats
- Double piston seats
Features
- Double block and bleed design (DBB)
- Secondary seals in pure Graphite
- Anti-static device
- Anti-blowout stem
- O-ring/lip seal configuration
- Emergency sealant injection on seats and stem available
- Low fugitive emission stem packing available
- CRA overlay on all dynamic sealing areas or on all wetted parts available
- Special maintenance tool for in-line seat disengagement
- Stem extension for underground installations available
Operator
- Manual: wrench or gear with padlocking
- Actuated: Pneumatic/ Hydraulic/Electric
Testing & certifications
- Compliance with API 6D & ISO 5208 & API 598 inspection and testing
- Compliance with API 6A inspection and testing
- Compliance with API 6DSS Inspection and testing
- Fire safe and fire tested as per API 6FA/607
- SIL 3 Certification as per IEC61508
- Fugitive Emission as per ISO15848
- PED 2014/68/UE
- Available as per API 6A standard:
- Product specification levels PSL 1, 2, 3, 3G, and 4
- Performance requirement levels PR1, PR2
- Design validation as per PR2F