Back To Top
HF Alky Repair
Hydrofluoric Acid Alkylation (HF Alky) process valves

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.

Refineries that demand precise testing and repair of valves choose to partner with Midwest Valve Services.

Historically, double-ported sliding-stem valves have been used in Hydrofluoric Acid Alkylation (HF Alky) units. Newer valve designs utilize the post-guided trim of the EZ-type valve and the V-ball-type control valve, used for most applications up to NPS 4. For valves NPS 6 and larger, it is desirable to use a V-ball-type control valve solution. However, shifting from an A-body to a V-ball-type valve is a significant change in control valve selection. Midwest Valve can handle repairs of both types, as well as others.

Plan your next turnaround or shutdown with a trusted partner who sets the scope and details to your specifications.
Understand the status and repair history of your valve assets before an uplanned outage or event results in expensive downtime.
Contact us today to talk to an expert about your HF Alky valve repair needs and how we can help you reduce downtime and increase your operation's productivity.
CALL US TOLL-FREE, 24 / 7 / 365