The Clarkson KGD wafer style slurry knife gate …

1 Clarkson KGD wafer style slurry knife gate Valve 2 thru 24 Copyright 2006 Tyco Flow Control. All rights Total Flow Control Solutions Flow ControlGeneral applications Mining Power Pulp and paper Alumina Chemical CementTechnical dataSize range: 2 thru 16 rated to 150 psi:18 thru 24 rated to 90 psiSleeve: Gum rubber standardTemperatures : Standard sleeve rated to 160 F, up to 300 F with proper elastomerselectionThe Clarkson KGD wafer style slurry knife gate valve offers value and high performance in a compact Patented, field replaceable elastomersleeves available in a wide range of elastomers to meet variedapplications. Dynamic self-adjusting secondaryseal. Long lasting lubrication. No metal parts in contact with theflowing slurry . Unobstructed flow eliminates turbulence, minimizes pressure dropacross valve. 100% Isolation; bubble-tight shut-offresults in absolutely zero downstreamleakage.

2 Double-seated design provides bi-directional flow and shut-off. No seat cavity where solids can collect and prevent full gate closure. No gate or stem packing is required,eliminating packing leakage andmaintenance. Adaptable frame (yoke) designfeaturing a top-removal stem nut, canbe field modified to an air cylinder orbevel gear in the field without welding. Open-Closed lockout bracketsstandard, ready for optional factorysupplied or customer supplied is either a trademark or registered trademark of Tyco International Services AG or its affiliatesin the United States and/or other countries. All other brand names, product names, or trademarks belongto their respective KGD wafer style slurry knife gate Valve 2 thru 24 Copyright 2006 Tyco Flow Control. All rights the KGD sleeves workSplash containmentThe KGD valve incorporates a built-inclean-out area at the base of the clean-out area may be enclosedby an optional, removable drain plate thatis provided with ports to drain away anyaccumulated solids that may prevent fullgate closure.

3 Flush water can both enterand exit the clean-out area through theports or enter through a flush port at thetop of the valve body. With the drain platein place, any solids, slurry , or flush waterejected from the valve can be handled in acontrolled configuration Ductile iron body housings 316stainless steel gate Universal body housing drilled andtapped to match ANSI Class 150 companion flanges High tear strength gum rubber sleeveswith integral support rings Gum rubber secondary sealSecondary sealThe one-piece, self-adjusting, molded elastomer secondary seal eliminates any leakagebetween the knife gate and top of the valve body in any orientation. The seal also preventsany outside contaminants from getting inside the valve. It is dynamically self-adjusting,eliminating the need for continual adjustment required with conventional style packing. Thesecondary seal is also used to lubricate the gate as it cycles through the seal, providingsmoother gate movement and longer seal life, as well as reducing the force required toactuate the lubricant is held inside a series of rib cavities built into theseal, each time the gate passes through the seal, a small amount of the long-lastinglubricant is released.

4 The seal is replaceable and can be changed while the valve is in Various gate materials 316L SS 317L SS 317L MN Alloy 20 17-4 PH Jessop 700 Hastelloy C-276 Others Feralium 255 316 SS body housing (4 thru 12 ) Sleeves (see page 3) Drain plate Actuators (see page 4) Stem covers Control accessories Metric flange drillingOpen position: gate positioned aboveseals Tight fit between sleevescontains internal pressure Metal parts not in contactwith slurry Unobstructed port areaeliminates turbulence,minimizes pressure dropacross valve No seat cavity wheresolids can collect andprevent full gate closureMatching sleeves are placed in theKGD valve housing to seal against thegate when the valve is closed and sealagainst each other when the valve isopen. This tight seal contains theinternal line pressure, precluding directpressure against the secondary the gate moves from open to closedposition, it separates the facingsleeves.

5 The unique KGD sleeveassembly provides positive sealingaction when the valve gate is closedand when the gate is open; the sleevesprovide an unobstructed port andprotect metal parts from the position: gate travels completelythrough sleeves to provideblind flange shutoff andexpel solids 100% Isolation-bubbletight shut-off results inabsolutely zerodownstream leakage Double-seated designprovides bi-directional flowand shut-off Tight fit between sleevesand gate contains internalpressure Controlled stroke preventsgate from penetrating toofar, minimizing stress onsleeveLubricantContact RibsClarkson KGD wafer style slurry knife gate Valve 2 thru 24 Copyright 2006 Tyco Flow Control. All rights KGD wafer style slurry knife gate ValveWafer style , slurry knife gate valve shall be, packingless, rubber-lined, bi-directional valve suitable for a wide range ofindustrial full port design shall have no internalobstructions and will provide a blind flange shut-off when the gateis closed.

6 The valve s sealing surface is to be between two rubbersleeves that are compressed into the ductile iron valve housings. Thesleeve will be molded with an integral stiffener ring that locates thesleeve in the valve housing and helps the sleeves resist the highshearing forces present when the gate is driven between them. Valveshall have a one-piece, molded, replaceable elastomer secondaryseal to eliminate any leakage between the knife gate and top of thevalve body in any orientation and prevent any outside contaminantsfrom getting inside the valve. It shall be dynamically self-adjusting,eliminating the need for continual adjustment. The secondary sealshall retain a Silicon-based lubricant to lubricate the gate as it cyclesthrough the seal, providing smoother gate movement and longer seallife, as well as reducing the force required to actuate the gate . Thestainless steel gate shall be completely withdrawn from the processflow when in the open position, and can be inspected and replaced,if necessary, without taking the valve out of service.

7 When the valveis in the closed position, the downstream sleeve can be replacedwhile the upstream portion of the valve is still holding pressure. Thevalve body housing to be full flanged, universal type, standard drilledand tapped to suit ANSI with optional PN10 or PN16 orothers, as required. Valve is equipped with a heavy steel fabricatedhandwheel frame (yoke) which can be converted to bevel gear orcylinder operator in the field without welding, complete with a 304stainless steel rising stem. All nonferrous exterior surfaces shall bepainted to factory Clarkson KGD slurry knifegate valve from Tyco Valves & frame (yoke) designed toaccept top removal stem nut, bevelgear or cylinder actuator withoutweldingStandard open and closedlockout/tagout positionsThe stainless steel gate is completelywithdrawn from the process flow inthe open position and can beinspected or replaced without takingthe valve out of service316 stainless steel gate is standardDynamic self-adjusting secondaryseal retains long lasting internallubricationPatented, field replaceable elastomersleevesUnobstructed flow area, fully linedwith elastomer sleeves, no metal tometal contact, no guides or wedgesDouble sleeved design provides a blind flange shut-off when the gate isclosed.

8 Tight fit between sleevescontains internal pressureNo need for flange gasketsUniversal cast ductile full-flangedbody housing to suit ANSI ,PN10 or PN16 as requiredLockwashers used on all boltingClean-out areaControlled stroke prevents gate frompenetrating too far into the sleevs inthe closed position. This minimizesstress on sleeve, reduces chances sleeve materialsGum Rubber:This category includes allnatural gum elastomers, both filled andunfilled and synthetic Polyisoprene. Hashigh tensile strength, superior resistance totear and abrasion and good resistance toheat build-up. Maximum continuousoperating temperature 160 :Advantages, excellentresistance to heat, ozone and sunlight,very good flexibility at low temperature,good resistance to alkalis, acids, andoxygenated solvents and superiorresistance to water and steam. Limitations,poor resistance to oil, gasoline, andhydrocarbon based solvents. Maximumcontinuous operating temperature 300 and Nitrile-HTP:Advantages, verygood resistance to petroleum basedgreases/oils,silicone greases/oils andnonoxidizing chemicals.

9 Good resistancehydrocarbon based ,Inferior resistance to ozone andoxygenated solvents. Maximum continuousoperating temperature 225 F for HTP and200 F for standard :Advantages, good low-tempproperties, good abrasion resistance,excellent resistance to corrosive andoxidizing chemicals, moderate resistanceto oil and , poorresistance to aromatic solvents. Maximumcontinuous operating temperature 200 :Advantages, outstandingresistance to high heat, excellentresistance to oil, gasoline and hydrocarbonsolvents. Very good impermeability togases, vapor and oxygen. Limitations, poorresistance to tear and cut growth, very littleresistance to oxygenated continuous operatingtemperature 400 F (Consult factory fortemperatures higher than 400 F).SpecificationFeaturesClarkson KGD wafer style slurry knife gate Valve 2 thru 24 Copyright 2006 Tyco Flow Control. All rights Flow Control (TFC) provides the information herein in good faith but makes no representation as to its comprehensiveness or accuracy.

10 This data sheet is intended only as a guide to TFC products and servic-es. Individuals using this data sheet must exercise their independent judgment in evaluating product selection and determining product appropriateness for their particular purpose and system requirements. TFCMAKES NO REPRESENTATIONS OR WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULARPURPOSE WITH RESPECT TO THE INFORMATION SET FORTH HEREIN OR THE PRODUCT(S) TO WHICH THE INFORMATION REFERS. ACCORDINGLY, TFC WILL NOT BE RESPONSIBLE FOR DAM-AGES (OF ANY KIND OR NATURE, INCLUDING INCIDENTAL, INDIRECT, OR CONSEQUENTIAL DAMAGES) RESULTING FROM THE USE OF OR RELIANCE UPON THIS and Patents Pending in the and foreign countries. Tyco reserves the right to change product designs and specifications without Manual HandwheelBG Manual Bevel GearAC Air CylinderHC Hydraulic CylinderEM Electro-mechanicalRA-RatchetActuationNot e: Not all actuators shown are available on all valve *B2*CDE FGH J K L N PRUniversal flanges drilled and tapped to ANSI B or PN10 and PN16 or others, as minimum dimension required for installed and WeightsMHBGACHCPDCAMEB*NRFGH.