Body & Bonnet: integrated stainless steel forging or casting, with excellent strength and anti-cryogenic property.
Disc: forging type with heat treatment and cryogenic treatments, STL overlay on seat sealing.
As for soft seate construction, the seat overlay STL, disc material with PCTFE insert, guaranting the good sealing.
Stem Nut: C95200, with better chemical property and smooth turning.
Fastners: all the fastners are fully threaded type under cryogenic temp.it is effectively avoid fastners long deformation and sealing failed.
Clean: all the cryogenic valves are oil-degreased before assembling.