Coalescer/Separator

Temperature?

Pressure?

FCS Group II Class C is from API 1581

http://www.techstreet.com/cgi-bin/detail?doc_no=API|Spec_1581&product_id=235864

can anybody provide info on the material specs of the vessel? we do not have copy of API 1581.

FCS Group II Class C generally refers to the material classification used in the project or company specification rather than a universal ASTM or ASME material designation. For water separators, the shell material is commonly Carbon Steel such as ASTM A516 Grade 70, ASTM A36, or SA-516 Gr.70, depending on the design pressure, temperature, and applicable code (usually ASME Section VIII Div. 1).

If your drawing only specifies FCS Group II Class C, you'll need to refer to the project's Material Specification (MS) or Piping Material Class/Engineering Standard, where this code is mapped to the actual material grade.

If you can share the project specification or the equipment datasheet, I may be able to help identify the exact material.