Mining & Minerals Slurry Transport

Severe Service Metal Seated Ball Valves

Severe Service Technology, Inc. SST

Severe Service Technology, Inc.Incorporated in 1997Over 15,000 valves shippedTotal Turnkey OperationsCorporate and Design Offices: Houston, TX Manufacturing, Assembly & Test: Monterrey, Mexico

Industries: Power Generation Process Mining Paper

Our state of the art manufacturing facility is fully equipped with the latest technology inmachining, thermal spraying and testing equipment. Our rigid, quality control standardsensure that our products are manufactured with detailed precision that meet or exceedANSI, AISI, API and MSS-SP-61 requirements.

2Plant: Monterrey, Mexico

16,000 square feetMachining operationThermal Spraying performed on-site3Design Computer Optimized

FEADeflection AnalysisStress AnalysisThermal AnalysisAll Designs via SOLIDWORKS Simulation

Finite Element Analysis4Metal Seated Valves with Special Coatings on Sealing Surfaces

Zero Leakage to API, MSS-SP-61, and ISO Standards and Procedures High Pressure (500+ psi /35+ bar)

High Temperature (up to 1500F /815 C)

Erosive or Corrosive Media (i.e., bitumen, copper, iron ore, gold, silver, and salt water)

What are Severe Service Valves?

Mining & Minerals Industry

Model SSM - Product OverviewSizes: 1/2 to 36ASME Class: 150 to 2500End Connections: RF Flanged, RTJ, Greylock, Buttweld and SocketweldBore: Full and ReducedSide and Top EntryTrim Materials: Metallic and CeramicSealing: Symmetrical (Uni and Bi-directional)Actuation: Lever, Gear, Electric, Pneumatic and Hydraulic

DesignTwo or three piece side-entry floating ball valve design with:Live-load Stem Packing GlandScraper SeatsDownstream Seat RetainerFlush-Out Body cavityISO Mounting PadOptional Portable Flushing System.

Also available in Top-Entry floating ball design with caged trimProvides installation of internals (ball, seats, and springs) while valve remains in pipeline. In certain conditions this design greatly reduces downtime and cost versus removing existing valve.Standard MaterialsItem/PartMaterialsBody / End AdapterCarbon Steel: A105Stainless Steel: Type 304 & 316SeatStainless Steel: 17-4PH (H900)Inconel 718BallStainless Steel: 17-4PH (H900) Inconel 718SpringStainless Steel: 17-4PH (H900)StemStainless Steel: 17-4PH (H900) PackingGrafoilCoatingsHVOF (Tungsten Carbide) and Spray & Fuse

Consult Factory for other materials

Model SSM: Design OverviewBodyEnd AdapterBallSeatSeat

SpringStem Spiral Wound GasketLive-Loaded Packing Gland Spring

Symmetical DesignSeatSeat

Spring SpringDesign can be used for both Uni- and Bi-Directional applications

Reduce requirement for spare valvesHigh-Tech Coatings

High Velocity Oxygen Fueled (HVOF) process; using oxygen, hydrogen and Tungsten Carbide powder at MACH 5 to 53-57 Rc harness

Spray and Fused: Colmonoy (Nickel based) provides very high hardness (50-53 HRC) and extremely good wear and abrasion resistance

Flush-Out Body Profile

Upon initial opening some material will enter body cavity. Upon valve re-opening, material will flush-out downstream of Ball in preferred flow direction

Valve OpenValve ClosedSealing Design

SpringO-Ring eliminates material from getting behind Seat.

E-Ring eliminates material from getting behind SeatSlurrySlurrySlurry

SpringSpring is located above the Seat (not behind Seat) and out of the flow path.

Material: Inconel 718

Slurry Flow

Scraper SeatsKnife edge design assists in removal of particulate matter from Body cavity when valve is cycled

Stem Retention SystemRetention ring prevents bottom of Stem from making direct contact with Ball Slot, thereby eliminating possibility of damage during actuator installation

Codes and StandardsDesigned, Manufactured & TestedAPI 598: Valve Inspection and TestingAPI 608: Metal Ball Valves Flanged, Threaded and Welding EndISO 5208: Pressure Testing of Metallic ValvesMSS-SP-61 TestingASME B31.3 Process PipingASME B16.34 Valves Flanged, Threaded and Welding End

Other local requirements

TestingTested to API 598 and MSS-SP-61Body Hydro at 1.5 times MCWPSeat Tested in preferred direction at 1.1 times MCWP

Product Field ServiceSST will respond within 48 hoursService Plan Troubleshooting

English and Spanish speaking Field Technicians

CustomersDofasco SteelRio Tinto/Quebec Iron and TitaniumSudbury MiningLakefield Research & Dev.Kilborn EngineeringVALE/IncoSNC LavalinCAP Mineria/Hierro Atacama

Mining & Mineral Applications

Autoclaves: SST provides severe service valves for leaching processes (i.e., HPAL) where both high pressure and temperature are present. Valves are also designed for erosive and corrosive applications such as autoclave discharge, vent, isolation, and feed.Roasters: A dry process involving gas-solid reaction at very high temperatures to purify the metal components. Severe service valves are used for isolation and drain.Tailings: A waste slurry product of fine minerals and water which remain after extracted from unusable ore produced by the milling operation. Mining Applications

Tailings: A waste slurry product of fine minerals and water which remain after extracted from unusable ore produced by the milling operation. Floatation Cells / Column Thickeners: A method to separate minerals depending on their ability to attach to air bubbles and carry them to the surface. High Pressure Leaching: Where cyanide is added to a precious metal (i.e. gold) and leaching the mineral into solution. Oil Sands: Severe service valves are used in froth treatment, slurry production processes and steam injection in Steam Assisted Gravity Drain (SAGD) systems.16 Valves

Operating and Standby Pump Stations: Severe service ball valves are used to prevent slurry leaking (zero leakage and full differential pressure) back to an idle pump. Valves can be used for both suction and discharge sides for pump isolation.Choke Stations: Where pressure built up must be reduced or eliminated to maintain safe pipeline operation and provide back-pressure to provide constant flow. Severe service ball valves are used to divert flow to the Choke Station. When closed, the ball valves must provide zero leakage at full differential pressure.Slurry Pipeline Applications

Slurry Pipeline Applications

Isolation Stations: Valves are required to operate in the event of major rupture to the pipeline. Placed at certain intervals, ball valves can isolate sections of the pipeline. It is common to have two valves in series (Cut and Seal) where one is the flowing valve (Cut) and one is the isolation valve (Seal). SSTs full-ported valves are also designed for pig launching and receiving stations.Instrument Isolation: Control and measurement systems are located the length of the pipeline. These small severe service valves are used to isolate instruments for repair, calibration or replacement while the pipeline is in normal operation.High-Pressure Dewatering: Process where high-pressure water is pumped to the surface from underground mining applications.SSTMogasVTINotesASME Class 150 - 2500YesYesYesFull BoreYesYesYesAll theSizes 2 -36"YesYesYesSameFloating BallYesYesYesScraper SeatsYesYesYesBody/Adapter Structure (pieces)2 & 3 2 & 32Ball & Seat Material (Standard)17-4 PH H900410 SSVariesBall & Seat Coating (Standard)Tungsten CarbideChromium CarbideRAM 31 C.C.Ball & Seat Coating (Optional)CC, non-NickelTC, non-NickelTC, non-NickelSimilarCoating ProcessHVOFHVOFRAM 31 (HVOF)Body / End Adapter MaterialForgingForgingForging/CastingLive-Loaded Stem Packing GlandYesOptional onlyYesFlow DesignSymmeticalBi-directionalUni & Bi-directionalSeparate Downstream SeatYesYesNo (intregral with Body)Mate-lapping of Ball and SeatsFull 360 degreeSeat Face (wide)Seat Face (narrow)MajorSpring locationAbove Seat (out of flow path)In Flow PathIn Flow PathDifferenceO-ring to eliminate material flowing behind SeatYes, on both Upstream and Downstream SeatsOn Downstream Seat onlyNo E-Ring to eliminate material flowing behind SeatYes (2)NoNoFlush-Out Body CavityYesNoNo

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