Bolted bonnet (BB) design.
Full port or reduced port design.
Back seal design.
Renewable Seat or welding Seat.
Special request: Locking device (Interlock),Position indicator. Limit Switch.
Extend bonnet for cryogenic & underground Service is available.
Standards
Design and Manufacture: API 6D.
Face to Face: ASME B16.10.
Flanged Ends: ASME B16.5.
Test and Inspection: API 6D / API 598.