CCUS

Design requirements:
Side-entry or Top-entry
Stem extension (min. design temp. -50°C)
Soft or metal seated, self-relieving, DBB
Solids entrapment protection: seat & cavity protection
Grease injection system for trunnion bushes, stem & seat
Vent & drain: RTJ flanged to body

Material selection:
CS (3mm c.a.) + Overlay Inc625 on sealing areas
Springs in Inc718
Peek inserts, Lip-seals, V-pack (Norsok M-710 tested)
Auxiliary HNBR (FKM not allowed), graphite fire-safe
Bushes Inc625+Ptfe (Bronze not allowed)

Testing requirements:
Seat gas testing (ref. API 6D, 6A PSL3G)
Fugitive emission class A(HS), Mesc 77/312
Functional Testing (including HIPPS)