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 VAT Gate Valve, 14046-PE44-1016 US $675.00 
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 VAT Valves Stainless Vacuum Gate Valve: F02-68785-02 R US $1,999.99
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 KNIFE GATE VALVE 8IN STAINLESS GATE STEEL BODY PNEUMATIC AIR ACTUATOR 31188 US $750.00
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 LOT OF 2pcs. NIBCO # F-617-0-4 CAST IRON 125 SWP 200 WOG GATE VALVES, NEW US $225.00
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 VAT Gate Valve 6" Series F14-97425/0024 US $1,499.00
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 HVA High Vacuum Apparatus stainless steel gate valve 6" 122-0601 solenoid 24vdc US $150.00
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 Vat valve slit door 81063-r1 gate door Producer transfer chamber 200mm amat US $175.00
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 BONNEY FORGE 1/2" Gate Valve Class 600 NEW! US $60.00
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 NEW VAT 104482 102473/10252 LAM RESEARCH 796-062304-001 GATE VALVE CONTROL RECTA US $2,199.99
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 ALOYCO 1 INCH CLASS 150 STEAM JACKET GATE VALVE 304 STAINLESS A& B RECON US $379.00
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 14" DIA DEZURIK MANUAL USED KNIFE GATE VALVE US $1,850.00
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 VAT 64244-PE52-AAR1" 6" CONTROL GATE VALVE WITH STEPPER MOTOR US $1,449.99
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 VAT 64244-PE52-AAR1-0001 6" (DN160) CONTROL GATE VALVE WITH STEPPER MOTOR US $1,449.99
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 VAT 14040-PE44-0006 ISO100 GATE VALVE US $899.99
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 Vacuum Research Company Aluminum Gate Valve US $825.00
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 VAT 12040-PA44 Vacuum Gate Valve US $489.38
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 10" Dezurik Manual Knife Gate Valve - Stainless US $449.00
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 Royalvee 8" Sliding Gate Knife Valve Stainless Steel with Air Actuator US $950.00
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 Varian Air Swing Valve 951-5210 Gate Valve 8" ID US $79.00
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 ROVALVE SB1700D10-AC12-AMVZ ACTUATED STAINLESS STEEL KNIFE GATE VALVE ,NEW US $750.00
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 Slide Varian Gate Valve & LN2 Cold Trap Combo US $1,000.00
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 VAT Model: F-60114-154 Pneumatic Gate Valve US $399.99
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 MDC Stainless Steel Gate Valve GV-1500M-P-03 Conflat 2 ¾” 30mm US $551.12
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 Edwards Stainless Steel Gate Valve NGW414000 KF-40 US $551.12
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 12" SALINA VORTEX KNIFE GATE VALVE USED US $1,500.00
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 2" DIA. SWING GATE DIVERTER VALVE US $1,500.00
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 VAT VAT VALVE GATE VAC PNEU DN100 4" ALUM US $2,199.00
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 VAT 01028-KE14 KF-25 gate valve vacuum NW25 NW 25 stainless steel pneumatic US $325.00
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 Mueller 2360 Series Resilient Wedge Gate Valve 10" US $999.00
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 WALWORTH 304162 GATE VALVE 8" US $499.00
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 8" Sartell STAINLESS STEEL KNIFE GATE VALVE US $450.00
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 12" in cast iron check valve shut off Gate valve US $999.00
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 FNW valve company knife gate valve model #65BM US $1,000.00
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 PLATTCO TWIN CYLINDER PNEUMATIC SLIDE GATE VALVE US $750.00
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 USED 8" DEZURIK MANUAL KNIFE GATE VALVE US $800.00
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 NEW ASM/VAT 3552640-01 Assy-Valve-Gate-Pneumatic 01034-KE24-ACT1 US $2,356.14
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 4" DIA. FABRI KNIFE GATE VALVE UNUSED! US $550.00
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 3" DIA. ORBINOX S/S GATE VALVE US $450.00
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 LOT 2 PCS,NEW,VELAN GATE VALVE 1" MODEL # 2054B-02TY,CLASS 800,1975@PSIG & 100F US $199.99
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 (AB01) VAT GATE VALVE 0310X-CA24-AKK3/0273 A-576262 WORKING US $799.99
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 SF EQUIPMENT STAINLESS KNIFE GATE VALVE; 4" MANUAL US $600.00
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 8" SALINA VORTEX KNIFE GATE VALVE US $950.00
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 SF EQUIPMENT KNIFE GATE VALVE; 8" MANUAL US $1,000.00
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 6" DIAMETER SF EQUIPMENT MANUAL KNIFE GATE VALVE US $800.00
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 USED DEZURIK KNIFE GATE VALVE, SIZE 10 US $1,750.00
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 USED DEZURIK KNIFE GATE VALVE, SIZE 6 US $1,450.00
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 4" DIAMETER MANUAL SF EQUIPMENT KNIFE GATE VALVE US $600.00
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 DEZURIK KNIFE GATE VALVE, SIZE 8 US $1,500.00
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 SF EQUIPMENT KNIFE GATE VALVE; 6" MANUAL US $800.00
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 8" PNEUMATIC ACTUATED STAINLESS WEY KNIFE GATE VALVE US $1,250.00
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 VAT MONOVAT Rectangular Gate Valve 0340X-LA24-BHK2 NIB US $2,333.00
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 V-Tex Heated Gate Valve Working US $908.11
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 A89145 VAT Gate Valve 03112-LA24-BCV1/0061 US $49.99
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 USED 6" DEZURIK KNIFE GATE VALVE; MANUAL US $500.00
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 SALINA VORTEX FA10 10" INLET DIAMETER KNIFE GATE VALVE US $650.00
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 2 NEW HVA 21210-0306Z-002 Gate Valve 3 inch, Iso Flange Clamp Style US $1,500.00
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 VAT 12146-PA24 ISO 200 Vacuum Gate Valve: Rebuilt US $1,600.00
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 MDC GV-625V Mini Conflat Gate Valve US $300.00
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 MDC GV-4000V-ASAP-SP Vacuum Gate Valve: Rebuilt US $1,100.00
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 Temescal 5030 6" ASA FIG Vacuum Gate Valve: Rebuilt US $950.00
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 VAT 15236-UE24 Vacuum Gate Valve: Surplus New US $1,050.00
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 HVA 11210-0601 6" ASA Vacuum Gate Valve: Rebuilt US $1,850.00
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 VAT 12040-PA44 Vacuum Gate Valve: Rebuilt-Helium Tested US $800.00
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 HVA 11211-1003R Vacuum Gate Valve, ISO-250, SS: Rebuilt US $2,200.00
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 VAT 02010-BA24 VALVE, GATE US $1,009.00
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 VAT GATE VALVE 03010-na24-1002 US $324.00
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 Applied Materials 3700-02728 SEAL BONNET DN100 SERIES 12 GATE VALVE AMAT US $58.00
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 LOT OF 2pcs. FIVALCO QUINGDAO MISC. GATE VALVES , NEW SURPLUS US $175.00
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 Rotolok Sunco Double Dump Flap Gate Tipping Valve US $1,950.00
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 MATCO 4" CAST IRON 200 WCP RW10RS SCREW END GATE VALVE , NEW US $100.00
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 Jenkins 125S 200 WOC 8 Inch Gate Valve US $1,200.00
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 HO-2 MILWAUKEE VALVE 2 1/2 GATE VALVE 200WOG 125S US $74.00
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 8" DEZURIK MANUAL KNIFE GATE VALVE…USED US $800.00
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 8" DEZURIK MANUAL USED KNIFE GATE VALVE US $800.00
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 VAT 300mm GATE Valve 0310X-CA24-AKK2/0006 US $499.00
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 8" DIA. L&M TECHNAFLOW S/S GATE VALVE RESILIENT SEAT US $950.00
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 VAT Vacuum Model: F25404-03 Gate Valve US $499.99
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 Used 6 in. Gate Valve. US $500.00
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 AMAT VALVE GATE PNEU ACTR. 1.0ID 10 3870-02563 US $3,098.98
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 New VAT Vacuum Gate Valve 12144-YA24-AJP1 /0085 US $1,186.50
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 10" DeZurik Slide Gate Valve US $850.00
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 FIRE MAIN GATE VALVE 8" US $399.00
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 USED 8" SALINA VORTEX STAINLESS SLIDE GATE VALVE US $850.00
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 Applied Materials Manual Control Gate Valve 0010-10010 US $350.00
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Gate Valve
Gate Valve - FBV
Repair Cylinder For Less by Krisel Ko
When it comes to building and construction, people today are becoming extra careful when it comes to the engineering and manufacturing efficiency, simply because lives may depend on it. This is a tough job, and the equipment needed for such should be as strong and as durable as it should be.
Manufacturing industry equipments such as cylinders, pumps and motors needed for construction are done with thorough planning for a specific design, but sometimes these designs fail due to maintenance or life expectancy. According to statistics, about 25% of mechanical equipment fails because of its design. Assuming that this applies to hydraulic cylinders, the ratio would be one is to four for such cylinders that are not designed decently for the particular application that they are working on. Yes, it would do the job it is asked for, but not with an acceptable service life.
When seen in the manufacturer’s perspective, cylinders are as typical as motors and pumps combined. If, for example, a certain industry equipment company operates a lot of hydraulic equipment, then it is likely possible that hydraulic cylinder repair costs would be on the top part of one’s overall maintenance costs. If one has a cylinder that needs frequent repair, then one may need to look at design-related problems which may arise at any given time of use. Some problems include bent rods, ballooned tubes, insufficient bearing area, and rod finishing.
Bent rods are a familiar cause of rod seal failures. Such bending of cylinder rods can be caused by insufficient rod diameter or material strength, improper cylinder mounting arrangement, or the combination of all three. Once the rod bends, extra load is placed on the rod seal, therefore resulting in the premature failure of the seal. With the use of the Euler formula, the permissible rod loading for a cylinder in an application can be checked out.
Hydraulic cylinder repair is done when the ballooning of the cylinder tube occurs. This is caused by inadequate wall thickness and/or material strength for the cylinder’s operating pressure. Once the tube balloons, the endurance between the tube wall and the piston seal is lost and high pressure fluid goes around the seal.
Premature failure of the seals and deformation will result when insufficient bearing area is seen. Definitely, hydraulic cylinder repair is needed for this, since excessive load is placed on the rod and piston seals. Another problem is of the rod finish, because the surface finish of the cylinder rod may have a huge impact on the life of the rod seal. If the roughness of the surface is too low, seal life can be reduced through incapable lubrication. If such surface is too high, contaminant ingression is increased, and an unacceptable level of leakage may be expected.
To be able to extend the service life of a cylinder, consider the surface of the cylinder rod as a lubricated wear surface and treat it for that reason. Alternative rod surface treatment such as black nitride or high velocity oxygen fuel metal spraying can be used in order to increase the life of the rod and its seals.
MEA Incorporated is a world leading organization that is composed of actuators designers, engineers and manufacturers of valves and actuator including hydraulic actuator, gate valve, hydraulic cylinder, hydraulic control valves, electric cylinders, hydraulic power units, valve actuator, fccu and etc.
Article Source: http://www.earticlesonline.com/Article/Repair-Cylinder-For-Less/597573
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Frequently Asked Questions...
What is O S & Y Gate valve and how is it different from a normal Gate valve?
Can somebody please explain me What is O S & Y Gate valve and how is it different from a normal Gate valve. How does O S & Y valve function.
Answer:
Outside Screw and Yoke (OS & Y). used mainly in fire prevention.
