- Full or reduced bore
In fully welded ball valves body and closures are welded together; the result is a solid assembly with no leakage paths. A fully welded application is a preferable solution when no maintenance is scheduled on valves and when it is mandatory to avoid any external leakage. A typical application is for underground service or subsea. Welding is performed by highly qualified welders, in accordance with all applicable ASME or EN requirements.
- Standard Features:
- Design according to API 6D, API6A, API 6DSS, B16.34, ASME VIII, ENI ISO 17292
- Ends according to ASME B16.5, ASME B16.47, B16.25, MSS-SP44
- Anti-blowout stem
- Antistatic device
- Double block and bleed
- Self-relieving
- Fire safe according to ISO 10497, API 607, API 6FA, BS 6755-2
- Soft or metal seated, PMSS also available
- Carbon steel, stainless steel, duplex stainless steel and any exotic alloy
- Optional features:
- Ends according to custom design
- One seat self-relieving and one seat double piston effect
- Emergency sealant injection on seat and/or stem sealings
- Bonnet extension
- Stem extension
- Internal lining
- Weld overlay on seat pocket and/or and stem pocket area
- Weld overlay on all wetted parts
