HF Acid Valves and Related Technology
Pacific Valves has been manufacturing valves for this very difficult service for over 50 years. We are considered the pioneers of this type of valve. In fact, we are the only valve manufacturer originally approved by all the major hydro -fluoric acid licensors (U.O.P., Phillips Petroleum and Chevron) in all sizes and pressure ranges.
Primary monel parts are color coded to assure proper material identification.We do not stop here. Before any monel part is assembled into a hydrofluoric acid valve it is acid tested to assure that it is monel. Another important aspect in the manufacture of these valves is the clearances at the critical metal interfaces (wedge/body guides, stem/back seat bushing, etc.). Hydrofluoric acid will react with carbon steel and monel producing a fluoride buildup on the metal surfaces which can render the valve inoperable. These clearances, developed over years of manufacturing experience, testing and research, must be precisely controlled to allow for this buildup. Our experience has enabled us to consistently produce valves that give the best performance for this stringent service.
All of our pressure tests and material checks are witnessed by an inspector who signs off on their accuracy. A laminated card is then attached to the valve with each test and material check indicated, as certification to our customer that these procedures have been followed. Every valve comes with this certification attached to it.
Every Valve is Tested
We test 100% of our hydrofluoric acid valves with kerosene. Our experience indicates that kerosene is the most ideal test media for the following reasons:
It prevents water entrapment; water entrapped in the valve internals will accelerate corrosion.
It assures casting quality; kerosene is less viscous than water thus will locate a casting defect more readily than other test fluids.
It provides seat test reliability; again, the viscosity of kerosene provides a more reliable seat leakage indication.
We test our hydrofluoric acid valves at extended time periods that further assure the quality of the valve performance. In addition, we test our HF Acid valves with Helium at 300 PSI to insure the casting integrity.
Large in-house Inventory
Recognizing the need to continue our service beyond initial installation we have committed to the refiners and licensors that an inventory of hydrofluoric acid valves will be maintained at Pacific Valves. We routinely carry valves in inventory that meet the licensor′s specification for quick delivery to your plant.
When you purchase Pacific hydrofluoric acid valves, you are really getting:
Peace of Mind
You are knowing that you have bought the most reliable product for this very difficult service.
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