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Valve & Automation provide solutions to this tough industry where most valves do not last more than a few weeks on abrasive slurries. Machinery and plant must be capable of dealing with media with a high amount of solids, abrasive material, corrosive chemicals as well as high velocities. Engineers and plant operators must be able to have complete control over their operation and select pipeline equipment that is reliable and able to withstand these harsh conditions. Linear and rotary valves must be able to operate for long periods without getting jamming or clogging. Replacing of parts and routine maintenance must be done quickly easily to reduce downtime and the impact on production. V&A are able to offer butterfly valves, control valves, knife gate valves, chemical handling valves or positioners for rotary or linear valves.

For waste water and water with impurities the NAF-Torex butterfly valve is an ideal option for isolation, on/off or control. On chilled water plants flow control needs are met with the NAF-Setball ball sector valve and the V&A K-Max rotary plug valve. Deep level mining has many challenges including how to protect high pressure multi-stage pumps while operating at under minimum flow conditions. Installing a Schroeder Automatic Recirculation Valve (ARC Valve) will protect these valuable pumps from overheating, cavitation leading to excessive noise and instability while operating under minimum flow conditions. On milling plants valves see very high wear due to this harsh operation and the Stafsjö SLV Slurry Knife Gate Valve will help to solve problems experienced on other valves. Cyclones will separate minerals and will benefit from the Stafsjö SLV Slurry Knife Gate Valve or the Stafsjö HG Through Going Knife Gate Valve. Chemicals used in mineral separation will require Richter Fully Lined Valves to isolate and control them. The Richter Fully Lined Valves would be ideal for demin water applications on steam plants. For tailings plants where materials are separated from the valuable minerals the Stafsjö SLV Slurry Knife Gate Valve with its replaceable seats will assist with quick and easy maintenance. The Stafsjö MV Knife Gate Valve would be ideal for waste water to light slurry applications when fitted with a polyurethane seat while the Stafsjö HG Through Going Knife Gate Valve would be used on difficult slurry applications when fitted with chromed blade and polyurethane seats. The harshest applications are more suited to the Stafsjö SLV Slurry Knife Gate Valve where it’s replaceable seat will ensure that no flowing media comes into contact with any metal components while in the fully open position. The valve blade completely withdraws from the flowing media and the internal seats form and extension to the pipeline. With the large range of brackets for positioners available we are able to fit the V&A iCON Valve Positioner to almost any rotary or linear valve on the market today.


Slurries

M = Manual    O = On/Off    C = Modulating Control


Application / Media % Solids M O C V&A Solution
Series Type
Bin & Tank Isolation High Stafsjö SLV Slurry Knife Gate Valve
Cyclones High Stafsjö SLV Slurry Knife Gate Valve
High Stafsjö HG Through Going Knife Gate Valve
Low Stafsjö MV Knife Gate Valve
Filter Press High Stafsjö SLV Slurry Knife Gate Valve
High Stafsjö HG Through Going Knife Gate Valve
Low Stafsjö MV Knife Gate Valve
Floatation Cell High Stafsjö SLV Slurry Knife Gate Valve
High Stafsjö HG Through Going Knife Gate Valve
Lime Systems High Stafsjö SLV Slurry Knife Gate Valve
Milling High Stafsjö SLV Slurry Knife Gate Valve
High Stafsjö HG Through Going Knife Gate Valve
Pump Isolation High Stafsjö SLV Slurry Knife Gate Valve
High Stafsjö HG Through Going Knife Gate Valve
Low Stafsjö MV Knife Gate Valve
Roaster / Autoclave High Stafsjö SLV Slurry Knife Gate Valve
High Stafsjö HG Through Going Knife Gate Valve
Low Stafsjö MV Knife Gate Valve
Sludge Stafsjö WB Knife Gate Valve
Tailings High Stafsjö SLV Slurry Knife Gate Valve
Thickener Underflow High Stafsjö SLV Slurry Knife Gate Valve

Mining Process

M = Manual    O = On/Off    C = Modulating Control


Application / Media % Solids M O C V&A Solution
Series Type
Air - Compressed Clean Resilient Seated Butterfly Valve
Boiler - Blow down Clean Arca Artes Ecotrol Globe Control Valve
Chemical Feed Clean Richter Lined Ball, B/Fly, Safety Valves
Chlorine Gas (Wet) Clean Richter Lined Ball, B/Fly, Safety Valves
Demin Water Clean Richter Lined Ball, B/Fly, Safety Valves
Hydrochloric Acid Clean Richter Lined Ball, B/Fly, Safety Valves
Metal Sulphate Clean Richter Lined Ball, B/Fly, Safety Valves
Sampling Valves - Chemical Clean Richter Lined Ball, B/Fly, Safety Valves
Sodium Hydroxide Clean Richter Lined Ball, B/Fly, Safety Valves
Sulphuric Acid Clean Richter Lined Ball, B/Fly, Safety Valves
Boiler - Feedwater Clean Resilient Seated Butterfly Valve
Clean NAF Torex HP Butterfly Valve
Clean Eccentric Plug Control Valve
Clean Arca Artes Ecotrol Globe Control Valve
Clean NAF Torex HP Butterfly Valve
Non Return Clean NAF Swing check
Pump Protection Clean Schroeder Minimum flow recirculation valves
Steam Clean NAF Torex HP Butterfly Valve
Clean Eccentric Plug Control Valve
Clean Arca Artes Ecotrol Globe Control Valve
Clean Zwick Triple Eccentric / Triple Offset Rotary Process Valve
Valve Positioners Clean V&A iCon Rotary & Linear Control
Water - Chiller Plant Clean Eccentric Plug Control Valve
Clean NAF Setball “V” Ball Sector Valve
Clean NAF Torex HP Butterfly Valve
Water - Process Low Resilient Seated Butterfly Valve
Medium Eccentric Plug Control Valve
Medium NAF Setball “V” Ball Sector Valve
Low NAF Torex HP Butterfly Valve
Medium Stafsjö MV Knife Gate Valve
Low Stafsjö WB Knife Gate Valve
Water - Raw Clean Resilient Seated Butterfly Valve
Low Stafsjö WB Knife Gate Valve
Water - Sludge Low Stafsjö WB Knife Gate Valve