Mining & Resources
Heavy-duty knife gate, pinch and isolation valves built to survive abrasive slurry, tailings and process duties, engineered for wear life and uptime in the harshest plants.
Few duties are tougher on a valve than mineral processing. Abrasive ore slurry, dense tailings and corrosive process liquors chew through standard components, and every unplanned shutdown to change out a valve costs production. The answer is purpose-built equipment designed around wear life, clean shearing and easy maintenance.
Purple Valves supplies the heavy-duty knife gate, pinch and isolation valves that run the slurry, tailings and dewatering circuits of modern mines, with abrasion-resistant materials and replaceable wear parts that keep plants running between scheduled outages.
Common Challenges in Mining & Resources
Abrasive and high-solids slurry
Tailings and ore slurry are relentlessly abrasive. Valves need hardened or elastomer-lined wear surfaces and a design that shears through settled solids rather than jamming on them.
Sealing on solids-laden media
Solids prevent conventional seats from sealing. Knife-edge gates and full-bore flexible sleeves are designed to cut through and isolate slurry without packing the seat with grit.
Maintenance cost and downtime
Wear is inevitable, so the real measure is how quickly and cheaply a valve is restored. Replaceable sleeves, seats and gates keep change-outs fast and predictable.
Recommended Valve Types
Slurry Knife Gate Valves
The mining workhorse: a sharp gate shears through abrasive ore slurry and settled solids for reliable on/off isolation on large-bore slurry and gravity drain lines.
Ask us about availabilityPinch Valves
A flexible elastomer sleeve is the only wetted part, so abrasive paste, tailings and backfill never touch the body, ideal for both isolation and control of the most punishing slurries.
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Heavy-Duty Ball & Isolation Valves
Full-bore isolation for process water, reagents and pipeline duties where a robust, tight-shut-off valve is required away from the slurry circuit.
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Metal-Seated Gate Valves
Hard-faced seats stand up to abrasive media where resilient seats wear quickly, giving dependable isolation across the concentrator and plant.
View 8 productsApplications, Materials & Standards
Key Applications
- Tailings discharge and disposal lines
- Mill, thickener and flotation slurry circuits
- Pulp and concentrate pipelines
- Dewatering and gravity drainage
- Paste and backfill systems
- Process water and reagent distribution
Typical Materials
- Abrasion-resistant elastomer sleeves and liners
- Hard-faced and hardened-steel gates
- Rubber-lined and HDPE-lined bodies
- Duplex and high-chrome internals for severe wear
Standards & Certifications
- MSS SP-81 slurry knife gate valves
- Heavy-duty wall and gate thickness for slurry duty
- ASME B16.5 / B16.47 flange compatibility
- Replaceable wear-component design
Specifying valves for mining & resources?
Tell us your size, pressure class and service conditions and our team will recommend the right valve for the duty, with pricing and availability.