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design: api609-83
flange dimension: asme b16.5
face to face: asme b16.10-1992
pressure test: api 598-82
parts name parts material
body wcb/304/316/cf8m
disc wcb/304/316/cf8m
stem 316/2cr13/1cr18ni9ti
sealing 316/ptfe
packing graphite/ptfe
.