Mining Application
Tailings Pipeline, Pump & Spigot Isolation
Extend maintenance intervals and ensure environmental protection with valves engineered for high pressure and high solids tailings.
Maximize Mill Uptime With Reliable Tailings Management
Mill waste, or tailings, are abrasive and cause severe wear on piping components as they are collected and delivered to the tailings storage facility (TSF). Tailings applications often see the highest solids content slurry, and highest pipeline volume, and can have a wide range of pressures. Isolation valve performance and life span have a direct impact on mill throughput and operating costs.
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Recommended Products
The following products are capable of providing zero leakage shutoff through high pressure, high solids content slurry. These valves are engineered for an extended cycle life in abrasive media and rapid, on-site repair to maximize uptime.
The Clarkson KGA+ heavy duty slurry valve offers improved seals, full flange body options, and simplified design for easier maintenance. It provides optimal performance in various conditions and100% isolation.
- Improved secondary seal: Capable of being lubricated without disassembly, simplifying valve maintenance.
- Double-seated design: Provides bi-directional flow and shut-off, ensuring 100% isolation and zero downstream leakage.
- Unobstructed flow: Eliminates turbulence and minimizes pressure drop across the valve while preventing solids from collecting and obstructing gate closure.
Size Range
NPS 3 - 60 (DN 80 - 1500)
Temperature Rating
Up to 400 °F (180 °C)
Pressure Rating
100 psi
Emerson’s Clarkson KS1 is a true bi-directional, zero – leakage ASME Class 150 knife gate valve, specifically designed to handle the challenges of severe service applications. Engineered to prolong valve longevity and maintenance intervals, the KS1 aims to offer a lower total cost of ownership.
- True bi-directional, zero leakage performance for severe services
- Patented gate edge seal system eliminates leakage through top of valve
- Heavy cross-section, precision-molded elastomer seat increases sealing surface area to maintain zero-leakage performance for more cycles
Size Range
DN 50 - 750 (NPS 2 - 30)
Temperature Rating
205°C (400°F)
Pressure Rating
ASME Class 150
Emerson’s Clarkson KS3 Knife Gate Valve is a high-performance, bi-directional valve specifically designed to meet the rigors of severe service applications. This ASME Class 300 valve is characterized by its exceptional zero-leakage performance, ensuring extend valve life and service intervals, leading to a lower total cost of ownership.
- True bi-directional flow and zero leakage shut-off - ensures that the valve effectively controls the flow of fluid in both directions, without any leakage
- Heavy cross-section precision-molded elastomer seat - provides more surface area for superior isolation
- Full round port and seat design - offers lower pressure drop across the valve and a longer service life in abrasive applications, enhancing the overall performance and durability of the valve.
Size Range
NPS 3 - 30 (DN 80 - 750)
Temperature Rating
Up to 400 °F (205 °C)
Pressure Rating
ASME Class 300
Expert Insights
Andy Coxall
Improving Tailings Management in Mining Operations
Andy Coxall joins podcast host Jim Cahill to discuss the challenges in tailings management, the problems with valves not suited for this severe-service application, and why severe-service knife gate valve technology such as the Clarkson KS1 is the best choice for these challenging slurry applications.
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Alek Duerksen
Tailings Valve Difficult Choices
Alek Duerksen’s Global Mining Review article, Making the Difficult Choices, describes the difficulties of tailing disposal and provides suggestions for choosing the proper automated isolation valves for this application.
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