Sulfuric Acid
Specialty alloys and lined valves for H₂SO₄ at every concentration. Acid-resistant ball, plug, and globe valves for production, transfer, and battery service.
Engineered for acids, caustics, chlorine, and hydrocarbons — the process streams where zero-leakage and material compatibility aren't optional.
Chemical processing demands more from valves than almost any other industry. Sulfuric acid, caustic soda, chlorine, hydrofluoric acid, hydrocarbons, and the hundreds of specialty intermediates that flow through a typical plant each demand specific materials of construction, specific seat designs, and specific testing — because the cost of getting it wrong is measured in safety incidents, environmental events, and regulatory consequences.
For three decades, Miller Valve & Controls has supplied chemical plant operators, EPC firms, and engineering contractors with valves engineered to the right material, the right design, and the right testing for each application. From bulk chemical production to fine chemicals, polymers to inorganics, we partner with manufacturers who specialize in the materials and designs chemical service demands.
We work with maintenance teams and project engineers to spec valves that hold up — and to deliver them on the timelines plant turnarounds and capital projects require.
Every chemistry has its own demands. Here's how we approach the most common — and the valve types we recommend for each.
Specialty alloys and lined valves for H₂SO₄ at every concentration. Acid-resistant ball, plug, and globe valves for production, transfer, and battery service.
NaOH and KOH valves with stainless, duplex, and nickel-alloy construction. Engineered for the long campaigns and thermal stress of caustic plants.
Dry chlorine, wet chlorine, and sodium hypochlorite valves with appropriate materials and oxygen-clean preparation when required.
Ball and butterfly valves for refined products, intermediates, and feedstocks. API 6D, API 607 fire-safe, and fugitive emissions packages available.
Metal-seated ball and globe valves for plant utility steam, process steam injection, and steam-traced systems. Tight shutoff for energy efficiency.
HF, anhydrous ammonia, ethylene oxide, and the hundreds of specialty media that chemical processing demands. Materials matched to media.
Knife gate and pinch valves for crystallization, filtration, and solids handling in chemical processes. Built to handle the abuse.
Reliable isolation and control for cooling water, demin water, instrument air, and the auxiliary streams that keep production moving.
Our chemical plant valve solutions draw from a curated set of manufacturer partnerships — chosen for their materials science, code compliance, and field-proven performance in chemical service.

PFA & PTFE-lined plug valves for sulfuric, hydrochloric, and caustic service.

Ball valves for hydrocarbons, fire-safe (API 607), and fugitive emissions service.

Specialty alloy gate, globe, and check valves for caustic and high-temperature service.

Triple-offset butterfly valves for steam isolation and chemical process service.

Globe control valves for process flow control, anti-cavitation, and severe service.
Three decades of chemical experience, packaged into a partnership your turnaround and project teams can rely on.
Hastelloy, Inconel, titanium, duplex, super-duplex, PFA-lined, PTFE-lined — we know which materials hold up in your specific service.
API 6D, API 607 fire-safe, ISO 15848 fugitive emissions, NACE MR0175 — we deliver to the standards your spec requires.
Capital projects and turnarounds run on aggressive schedules. We move quickly with engineered orders and stock items alike.
Birmingham-based assembly, testing, and documentation. Domestic accountability and a partner your QA team can audit.
Tell us about your application — chemistry, conditions, codes. Our engineers will help you spec the right valve.
Get in TouchIn loving memory of our founders and friends, Wayne and Lawton Miller