Hydrofluoric Acid Alkylation (HF Alky) process valves
Because the HF alky process occurs in the presence of an acid such as sulfuric acid (H2SO4) or hydrofluoric acid (HF) as catalyst, specialized valves and materials are required. Depending on the acid used, the unit is called a sulfuric acid alkylation unit (SAAU) or hydrofluoric acid alkylation unit (HFAU). Repair and testing of valves used in this process is not for most shops, but Midwest Valve Services has a successful track record of partnering with major refineries to produce like-new results.