The Industry

Built for Abrasion. Engineered for Uptime.

Mining valves face a unique combination of stresses — high-velocity slurries laden with rock and mineral particles, corrosive process chemistry from leach circuits and SX/EW operations, high-pressure pump discharge, and the remote operating environments where unplanned failure means days of lost production.

For three decades, Miller Valve & Controls has supplied mining operations with valves engineered for the abuse — copper SX/EW, gold heap leach, iron ore tailings, coal washing, oil sands extraction, and the dozens of other mineral processing flows where standard catalog valves don't survive.

Our manufacturer partners specialize in urethane-lined knife gates, ceramic-trimmed ball valves, lined plug valves, and the heavy-duty actuation that mining duty requires. We work with mining engineers, EPC firms, and operations teams to spec valves that match the abrasion, the chemistry, and the cycle life requirements.

Common Applications

Where Our Valves Earn Their Keep

Every mining circuit has its own demands. Here's how we approach the most common — and the valve types we recommend for each.

Slurry Transport

Urethane-lined knife gates and ceramic-trimmed ball valves for high-velocity slurry pipelines. Engineered for long campaigns despite abrasive solids.

Tailings Dewatering

Knife gates for thickener underflow, filter press feed, and tailings dam discharge. Built to handle the worst.

Process Water

Mill water, gland water, and process auxiliary service. Reliable isolation and control for the high-volume utility flows.

Leach Circuits

Acid-resistant valves for copper SX/EW raffinate and electrolyte service. Specialty alloys and lined construction for sulfuric acid resistance.

Cyanide Service

Stainless and lined valves for gold leach circuits, CIP/CIL tanks, and elution columns. Built for safety-critical cyanide handling.

Autoclave Service

High-pressure, high-temperature valves for pressure oxidation, HPAL, and autoclave discharge. Specialty alloys for the conditions inside the vessel.

Air & Oxygen Injection

Oxygen-clean valves for autoclave oxygen, sparging air, and process gas injection. Cleanliness standards delivered.

Reagent Handling

Lime, flocculant, frother, collector, and the dozens of reagents that mineral processing requires. Specialty valves for each chemistry.

Vendor Partners

Trusted Manufacturers for Mining

Our mining valve solutions draw from a curated set of manufacturer partnerships — chosen for their abrasion-resistance expertise, materials science, and remote-site reliability.