Knife gate valves
20Pages

PLANT 1 PLANT 3 MONTREAL, CANADA 109,000 sq. ft. (10,126 m > 2 ) > 1 ⁄ > 4 4֔ (8100mm) forged gate, globe & check valves, ASME ֑N stamp, ISO 9001:2000 WILLISTON, VERMONT, U.S.A. 155,000 sq. ft. (14,400 m > 2 )2Җ24 (50Ԗ600mm) forged and cast steel gate, globe and check valves, ASME Nђ stamp, ISO 9001:2000 PLANT 2 & 7 MONTREAL, CANADA 170,000 sq. ft. (15,800 m > 2 ) 260֔ (501500mm)forged and cast steel gate, globe, check, ball, knife and butterfly valves 3֖36 (80Ԗ700mm) ASME Nђ stamp, ISO 9001:2000 PLANT 4 & 6 GRANBY, CANADA 186,500 sq. ft. (17,325 m LYON, FRANCE 160,000 sq. ft. (14,900 m > 2...

Cast stainless steel body and investment cast yoke. In fabricated valves, leakage of corrosive medium dueto neglected maintenance on the packing, or line pressure surges causes corrosion and failure of most carbon steel or cast iron components. > An all stainless steel valve offers better corrison resistance than cast iron lined valves. The total cost of ownership becomes more attractive than the initial savings.: > The groove around the seat permits the gate to push particles aside and prevents clogging. When the valve is open the flow cleans the groove. > Rugged one-piece body...

Many times the cycle life of a standard knife gate valve. > ● Bonnetted design. Standard body-bonnet joint with an efficient non-asbestos reinforced fiber or PTFE gasket. Standard packing chamber with 125 RMS wall finish, burnished non-rotating stem and PTFE or graphite packing rings. > ● Long-life leakproof stem seal. > U.S. Patent # 5295661 No dewatering of stock, unlike standard knife gate valves. > ● Virtually no contamination of the environment. > ● Easy repacking in-line. (Valve should be de-pressurized when repacking in-line.) TIGHTER SEATS WITH PATENTED TORQUE CLOSURE OF KNIFE > ●...

During closure, the stem slides down pushing the knife into contact with thetwo bottom lugs. The taperstem head then transfers a vertical closing force to a lateral force which positively seats the knife against the seat face. Stem force, not line pressure, maintains seating contact in this unique design, ensuring tight seating in both directions (see alternative seat designs on page 10). During the opening and closing cycle, the guides ensure proper alignment of the knife. ● Handwheel torque oractuator force provides positive seat-knife closure. > ● Patented knife stemconnection. Unlike...

In stainless steel or othermaterials are available to divert the flow of abrasive slurries and protect valve seat from abrasion.Typical applicationsinclude dry solids, storage bins, bottom valves, mining slurries, fly ash, filters, cyclons, etc. The cone is installed between valve and pipe flange. > Flow data on page 12. > ● Live-loading and leak-off Handwheel, quick lever,chain wheel, bevel gear, on-off cylinder actuators, positioning cylinder actuators, electric actuators. 10 For very fine slurry lines,purge connections are recommended. Purging is used to prevent packing of material in...

● Thicker knife. Our valves have thicker, stronger knives, toprevent deflection under heavy pressure and to ensure a tight seal.The minimum knife thickness for Velan knife gate valvesare based on the ASME VIII formula for plate thickness. > ● Precision-machined, bottom and top edges provideshearing action for pulp stock and slurry. > ● Lapped seating face for maximum tightness. > For specific Knife Gate Valve thicknesses see tables on pages 3, 4, 5, 8 & 9 Easy seat maintenance due toreplaceable seat retainer ring on standard knife gate valves from 836֔ and bolted bonnet knife gate valves...

Due to unique torque closure of its seat, theVelan Bolted Bonnet Knife Gate Valve is an ideal solution for low pressure, high cycling, environmentally sensitive services and bidirectional applications. > Multiple pump discharge isolation with pressure 70-90 psi (4.8-6.2 bar) white water. Centrifical cleaner isolation. Pressure around 25-35 psi (1.7-2.4 bar) 2.5% pulp. Post refiner line isolation. Pump discharge shutoff5% pulp at 70 psi (4.8 bar) cycling over 75 times a day. Filter isolation installation. 13 >

OӔ OR DIAMOND PORT, FULL PORT, 150 PSIG (10.3 BAR) > MODEL ITEMAB KnifeT316T317ELC BodyT316T317ELC BoltStainless steelPacking PTFE-impregnated asbestos or PTFE-impregnated synthetic yarn Packing flangeT304T304 StemT304 Stainless steel YokeT304 Stainless Steel Stem nut Ni-resist or Bronze HandwheelDuctile iron Linear flow from low to full opening. > Non-plugging bonnet and throttle orifice. > Machined seat allows tight shutoff. > Beveled gate provides positive shearing action. > Port closure directly proportional to stem travelfor throttling. > Throttles dense solutions of paper mill stock...

ASME B16.5 CLASS 150, TYPE 34 > PARTMATERIAL BodyCF8MCG3M Seat ringCF8MCG3M DiscCF8MCG3MGasketPTFE or reinforced fiber BoltSS 304 NutSS 304 (self-locking) > Manufactured in corrosion-resistantstainless steel. > Precision machined tilting disc and seat for tight shutoff in reverse flow direction. > Designed with an off-center pivot to prevent the disc from slamming againstthe seat and to aid operation at lowpressure differentials. > Can be installed in both the horizontal or vertical positions, provided fluid flowis upward. > SIZE Rugged construction, simple andlightweight. > mm...