kuil99
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Vatac globe valve
Vatac globe valve
Vatac is an international leading manufacturer and supplier of industrial valves in the world. Our primary goal is to provide a unique solution
for the services of Oil, Gas, Nuclear, Refinery, Chemical, Marine, Potable Water, Waste Water, Sewage, Power Station and Pipeline Industries.
Vatac has been specialized in the designing and manufacturing of Ball Valves, Gate Valves, bellow globe valve, Butterfly Valves, Through cast globe valve, Knife Gate Valves, bellow valve and Strainers since 1970s. A broad line of materials are offered and fabricated, Steel Material ranges from conventional cast or forged globe valve to special alloy materials like Monel, Inconel, Hastelloy or Duplex steel. Cast Iron Materials in GG20, GG25 or ASTM A126 Gr.
B, Ductile Iron of GGG40, GGG50 or A536. Designing and Manufacturing standards strictly conform to API, ASTM, ANSI, AWWA, JIS, DIN, BS and ISO.
After over 3 decades of development and innovation, Vatac has acquired API 6D and CE certification as well as the quality management system
ISO9001:2000. Vatac today has over 500,000 square feet manufacturing facilities and over 350 employees, through its conviction to provide only the
sound quality products and perfect services to all of customers, Vatac has established itself as one of the leading active player in the valves
industry.
Vatac always places the product quality and customers needs on the utmost position and strives to better serve for our valued customers. We conform
to the latest standards and emphasize on managerial, technical and technological innovation. With an extensive network of sales, service and
distribution, Vatac can respond to customers requests faster and more efficiently, offers an in-time delivery of various requirements for our
customers, can become one of your best partners. Adhering to the tenet "Quality The World Value", Vatac is stepping towards to the first class
manufacturer and supplier of industrial valves and fittings in the world.http://www.vatacvalve.com/Product/GlobeValve_Class_247.html
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kuil99
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Vatac Gate valve
Vatac Gate valves are compact designed and properly machined, which is completely in accordance with most updated International Standards of API
600, ASME B16.34, DIN 3202, GOST or equivalents Vatac offers a broad line of Cast & forged gate valve in both B.B & P.S designs.
A cast gate valve, also known as a sluice valve, is a valve that opens by lifting a round or rectangular gate/wedge out of the path of the fluid.
The distinct feature of a knife gate valve is the sealing surfaces between the gate and seats are planar. The gate faces can form a wedge shape or they can be parallel.
Typical slab gate valve should never be used for regulating flow, unless they are specifically designed for that purpose. On opening the gate valve, the
flow path is enlarged in a highly nonlinear manner with respect to percent of opening. This means that flow rate does not change evenly with stem
travel. Also, a partially open gate disk tends to vibrate from the fluid flow. Most of the flow change occurs near shutoff with a relatively high
fluid velocity causing disk and seat wear and eventual leakage if used to regulate flow. Typical gate valves are designed to be fully opened or
closed. When fully open, the typical gate valve has no obstruction in the flow path, resulting in very low friction loss.
STANDARD FEATURES OF VATAC STEEL GATE VALVES ● LOW FUGITIVE EMISSION SERVICE
Vatac standard Steel Gate Valves are designed and manufactured to ensure leakage of less than 100
ppm (parts per million) of volatile organic compounds. Extensive base line laboratory testing (static and cycle testing) has been performed
establishing critical design parameters necessary to achieve low emission sealing in the Vatac stem packing seal area and in the bonnet gasket sealing
area, In-house testing procedure has been developed and is periodically performed to ensure that standard product design and manufacturing criteria
consistently result in the Vatac Gate Valve meeting a maximum of 100 ppm VOC leakage prior to shipment.
CRITICAL DESIGN AND MANUFACTURING CONTROLS APPLIED TO PRODUCE LOW EMISSION SERVICE GATE VALVES IN VATAC STANDARD PRODUCTS
Stem Straightness and Roundness ■ Stem Surface Finish To Max. 32 Ra
Stuffing Box Surface Finish To Max. 125 Ra ■ Stuffing Box and Gland Cylindricity
Self Centering Gland Design ■ Gland Packing: Die-formed Graphite Rings with Braided
Graphite Top and Bottom Rings.
Bonnet Gaskets
■ Class 150: 316 SS Tanged Clad Graphite ■ Class 300: 316 SS Spiral Wound
■ Class 600 & Higher: Ring Type Joint
LOW EMISSION DESIGN OPTIONS LIVE LOAD PACKING
In services requiring frequent cycling or with high pressure/temperature variations, live loading extends the service life between maintenance periods
by requiring less frequent packing gland adjustments. Belleville springs are employed to provide constant packing gland stress. Lantern Ring and
Double Packing Set Lantern ring with leak-off fitting connection and double packing stack is optionally available for critical services.
PACKING SYSTEM
Vatac Steel Gate valves use a combination of dieformed flexible graphite and interbraided graphite in a predetermined arrangement to ensure an
effective seal. Graphite packing achieves its maximum ability to isolate the atmosphere when it is contained within a chamber that is precise in
finish and dimension. Vatac Gate valves are manufactured with stem finishes better than 32 Ra and stuffing box wall finishes for 125 Ra. In addition,
stem straightness and taper are closely controlled.
AVAILABLE MODIFICATIONS FOR VATAC STEEL GATE VALVES
Packing and Gasket Changes ■ End Connection Modifications ■ Gear Operator Mounting
Trim Changes ■ Actuation ■ Cryogenic Gas Columns ■ Hand Wheel Extensions
Teflon Disc Inserts ■ Drilled & Tapped Body/Bonnet Connections ■ By-Pass
Pressure Equalizing ■ Acid Shields ■ Oxygen & Chlorine Cleaning & Packaging
Weld End Bore Changes ■ Customer Specified Coatings ■ Chain Wheel Operator ■ Block and Bleed
NDE TESTING AVAILABILITY
Dye Penetrant Test ■ Magnetic Particle Test ■ Radiography
PMI (Positive Material Identification) ■ API Performance Testing
O-RING SEAL BLOCK & BLEED GATE VALVES ● FIRE SAFE, VAPOR TIGHT SHUT-OFF
Should fire occur burning or damaging the O-Ring seal, metal to metal seats will provide an effective fire-safe shut-off.
SERVICE RECOMMENDATIONS
Vatac O-Ring Seal Block and Bleed Gate Valves are recommended for hard to hold services such as butane, kerosene, gasoline, propane, diesel oils, fuel
oils, jet fuels, steam, air, natural gas, toluene, hydrogen, helium, and oxygen. Manifold tank farms, LPG areas, and airport fueling facilities
provide excellent opportunities for savings with the O-Ring Seal Gate Valves. For effective double block and bleed service, the line media should be
free of foreign matter and solids in suspension.
Cast Steel Gate Valvehttp://www.vatacvalve.com/Product/GateValve_Class_246.html
Forged Steel
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kuil99
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Vatac Knife Gate Valves
Knife Gate valves is similar to a gate valve, but usually more compact. Often used for slurries or powders on/off control.Knife gate valves can be
used as cut off Valve and Adjustable Valve in some situations. It can be serviced under the Pressure Rating PN1.0~PN2.5Mpa, Service Temperature under
-29~550C, Knife Gate Valves are with A “CUTTING OFF” knife, it can clean the stickers of the sealing surface to clear the Sundries automatically.
Further more, a stainless steel material knife can also prevent the leakage led by corrosion.http://www.vatacvalve.com/Product/KnifeGateValve_Class_253.html
Divided by Diameters, knife gate valve is into non-rising stem (NRS) and rising Stem (OS & Y) type.Inside of a Knife gate valve can be designed as V
type, Tri-angle Type or Pentagon Type Passage. A “V” type Knife can be serviced as adjustable control applications.
Vatac knife gate valve are with advantages of compact structure, reasonable design, material saving, reliable sealing, convenient operation, small
volume, full passage flow, small flow resistance, small weight, easy installation and maintenance.
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kuil99
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Vatac through conduit gate valve
Vatac through conduit gate valve use a combination of dieformed flexible graphite and interbraided graphite in a predetermined arrangement to ensure an
effective seal. Graphite packing achieves its maximum ability to isolate the atmosphere when it is contained within a chamber that is precise in
finish and dimension. Vatac Gate valves are manufactured with stem finishes better than 32 Ra and stuffing box wall finishes for 125 Ra. In addition, stem straightness
and taper are closely controlled.
AVAILABLE MODIFICATIONS FOR VATAC STEEL GATE VALVES http://www.vatacvalve.com/Product/GateValve_Class_246.html
Packing and Gasket Changes ■ End Connection Modifications ■ Gear Operator Mounting
Trim Changes ■ Actuation ■ Cryogenic Gas Columns ■ Hand Wheel Extensions
Teflon Disc Inserts ■ Drilled & Tapped Body/Bonnet Connections ■ By-Pass
Pressure Equalizing ■ Acid Shields ■ Oxygen & Chlorine Cleaning & Packaging
Weld End Bore Changes ■ Customer Specified Coatings ■ Chain Wheel Operator ■ Block and Bleed
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kuil99
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The types of slab gate valve
The types of Gate Valve include valves with Through Conduit Slab, Through Conduit Expanding, Solid Wedge and Flexible wedge gates. Choosing an
appropriate Gate Valve is dependent on the duty and the sealing characteristics demanded by the service; Through Conduit slab gate valve depend on the flowline pressure to effect a seal; whereas Expanding and Wedge Gate Valves are positive shut off valves that force
the Gate onto the seats to effect a seal through increasing the torque and the thrust. In particular, the Flexiwedge is used for simple shut off
duties where high temperatures are involved and to prevent the gate from jamming.
Through Conduit Gate Valves designed to API 6D and 6FA are custom manufactured by Vatac and supplied with Flanged, Butt Weld, Socket Weld, Hub
Connectors, Compact Flange or other proprietary connections. Pressure ratings up to ANSI #2500Lb, temperature ranges from -46 to +175 Deg C and bore
sizes from 2” to 42 . All Vatac Through Conduit Gate Valves have their sealing surfaces hard faced with Tungsten Carbide and can be configured with
either Pneumatic or Hydraulic Actuators. All valves are available in Standard and Exotic Materials.
VATAC THROUGH CONDUIT GATE VALVE FLOW CHARACTERISTICS http://www.vatacvalve.com/Product/SlabGateValve_Class_251.html
Through conduit gate valve with a diversion hole is equal to that of pipelines of the same specification whose characteristics is shown per hereunder
per centum diagram. Through conduit gate valve without a diversion hole with a cavity fly span smaller than that of wedge type gate valves, and it is
regularly cylindrical object. Therefore, characteristics of the valves are similar except that they have a large pressure loss, further more, their
flux adjustment behavior is better than that of the valves with a diversion hole.
APPLICATIONS
▲ Gas Industry Service ▲ Gas Production, Offshore ▲ Oil Production ▲ Oil Transportation
▲ Petrochemical Processing ▲ Petroleum Distribution ▲ Petroleum Production and Refining
STANDARDS COMPLIANCE
▲ API 6D ▲ ASME B16.34 ▲ ASME B16.10 ▲ ASME B16.5
▲ ASME B16.47 ▲ ISO 15156-1 ▲ NACE MR-01-75
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kuil99
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Vatac Resilient Seated Gate Valves
Vatac Resilient Seated Gate Valves are with Main Features as below:http://www.vatacvalve.com/Product/ResilientSeatedGateValve_Class_255.html
▲ Ductile Iron Body & Bonnet with high strength and impact resistance.
▲ Rubber Encapsulated DI wedge to ensure drop tight sealing.
▲ Rubber bonnet gasket for longevity and protection of bonnet bolts.
▲ Stainless Steel Stem with high strength and corrosion resistance.
▲ Back sealing facility to allow for replacement of seals under full operating pressure.
▲ Straight through full bore to avoid debris traps.
▲ Isolated fasteners for corrosion protection.
▲ Wiper ring to prevent impurities from entering the stem sealing system.
▲ Anti friction thrust washer for low operating torques.Integral cast in foot for safe and easy storage.
▲ Full diameter waterway Hand wheel, square cap, operation.
▲ Design and manufactured strictly in compliance to AWWA, DIN, ANSI, ASTM, BS & JIS Standards
Service conditions:
▲ Temperature from-10C to 120C for EPDM seat.
▲ Temperature from-12C to 82C for NBR seat.
▲ Sizes: 3" through 24"
▲ Body Styles: End connections Flanged Ends, Flanged x Machanical Joint Ends, Machnical Joint Ends, Push On Ends
▲ Pressure Class: AWWA150 B, 250B, ANSI 125, ANSI 150, PN6, PN10, PN16
▲ Actuation: Nut, Handwheel, Buried Service, Electric, Hydraulic or E-Hydraulic.
▲ Optional Top Flanges to ISO 5211, Stem Extension for Buried Services
STANDARDS COMPLIANCE:
▲ AWWA C509, UL262, EN1171, DIN 3202 / 3352 F4 or F5, BS 4504
▲ ASME B16.10, BS EN558-1 (DIN 3202-F4 or F5)
▲ ASME B16.1 CLASS 125, ANSI/AWWA C111/A21.11, AWWA C606, EN1092-2, EN12226-1
The Vatac resilient seated gate valve have been solving fluid control problems in water, potable water and general industrial applications for over 30
years. Today Vatac Technologies is putting that experience to work for you in more ways than ever before- meeting your changing needs with dependable Vatac
Gate valves and accessories.
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kuil99
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VATAC WAFER CHECK VALVE DESIGN FEATURES
wafer check valve is one main product range from Vatac, we offer a broad line of wafer checks in both Single Disc & Dual Plate, also in Tilting
Disc. Fabricated from Cast or Ductile Iron, Carbon or Stainless Steel, specials like Duplex, Alum. Bronze. Standards to API 594 or ASME B16.34
VATAC WAFER CHECK VALVE DESIGN FEATURES
▲ LAPPED BODY & DISC SEATS
The heart of each valve is the seat/seal interface. Our valves are manufactured using the most updated machining methods and equipment to achieve
maximum flatness with a fine lapped finish. The end result is valves that easily meet and exceed test requirements of API 598 for metal-seated check
valves
▲ RETAINERLESS BODY DESIGN: The Vatac dual plate check valve s body is essentially a short, heavy wall cylinder with no holes through the body
wall. There is no need for retainers and leakage to the outside is impossible.
▲ INTRINSICALLY FIRE SAFE: With no drilling through the body wall, the Vatac dual plate check valve is intrinsically fire safe.
▲ HIGH TORSION SPRING: For potentially severe applications, a high torsion spring ensures the vatac wafer check closes as quickly as possible.
▲ SUPERIOR HINGE DESIGN: In order to eliminate seat wear during the opening cycle, all vatac wafer dual plate check valves incorporate clearance
between the hinge pin and holders, or hinge pin and disc bore. This clearance allows the disc assembly to lift off the seat prior to disc rotation
preventing the heel of each disc from scraping across the body seat. Conventional designs have an oversize bore in the discs or bearings, allowing
constant side to side movement of discs and increased chance of premature failure.
Vatac offers a broad line of Wafer Check Valves covering Dual Plate, Single Disc, Fully Lugged & Tilting Disc Types, all items are designed and
manufactured strictly to International Standards API 6D, API 594, ASME B16.34 or Equivalent.
▲ Retainerless Body Design: There is no need for retainers and leakage to the outside is impossible.
▲ Lapped Body & Disc Seat: Easily meet or exceed test requirements of API 598 for metal-seated check valves.
▲ High torsion spring loaded design: Ensuring a low craking pressure
▲ Light Weight and small Space: Saving a lot in cost and installation
http://www.vatacvalve.com/Product/WaferCheckValve_Class_249.html
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kuil99
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sleeve plug valve
sleeve plug valve
sleeve plug valve is a kind of plug valve, which utilizes a ported, moving sleeve located between the piston and cylinder wall and rotated or
moved up and down by a gear or camshaft driven actuators. A sleeved plug valve having flow-throttling lug members at the ports in the valve body, such
lug members constituting raised, island like projections from the walls of the valve chamber located immediately adjacent the side edge of the ports
in the direction of throttling or closing plug movement, such lug members extending circumferentially of their respective ports only along such side
edge and having a length which is only a minor portion of the total port circumference, and such lug members having a minimum width at their widest
point which is a function of the maximum port dimension of the valve.
Principle of opening and closing of the valve
process of opening and closing of the valve.When opening the valve,first of all,turn the hand wheel to make the plug lifted and separated with the
sealed surface,the turn the handled by 90 degree to connect the channel of plug th the channel of valve body.So that the valve is opened.When closing
the valve,first of all turn the handle by 90 degree to mark the channel of plug vertical to the channel of valve body,and then the hand wheel to
descend the plug.So that the valve is closed.
A well established name in the Indian market, we are engaged in manufacturing and supplying highly efficient Teflon Non Lubricated Sleeve Plug Valve. We are manufactured using premium grade of
raw material with excellent performance. These are available in various quality attributes.
http://www.vatacvalve.com/Product/PlugValve_Class_250.html
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kuil99
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Eccentric Plug Valve Features and Benefits Analysis
Eccentric Plug Valve Features and Benefits Analysis
Welded Nickel Seats
The eccentric plug valve Seat is produced by machining a groove in the Cast Iron body, followed by welding a Nickel seating surface in the groove.
After welding, the area is re-machined to provide a smooth, corrosion resistant surface for the plug to seat against. This seat is a minimum of 3mm
thick after machining. In addition to the corrosion resistance of the nickel, the welding process creates a hardened zone that aids the seat s
ability to resist abrasion.
Oil Impregnated Stainless Steel Bearings
The Eccentric Plug Valve has 300 series stainless steel bearings, making them highly corrosion resistant. The bearing is formed by pressing powdered
stainless steel into the bearing shape, which is then impregnated with a lubricant, providing maximum lubricity.
P.T.F.E. Grit Seals.
To prevent grit and debris from damaging the bearing, the Eccentric Plug Valve has P.T.F.E. (Teflon) seals above and below the plug. These seals are
held in compression between the plug body and bonnet, sealing the critical bearing area from the ingress of dirt and grit.
Self-Adjusting Stem Seals
Two self-adjusting, wear compensating, pressure energised ‘U’ cup seals are used to ensure a positive stem seal. An ‘O’ ring inside the ‘U’ cup
provides the necessary pre-loading to guarantee sealing under low pressure, while the expansion of the ‘U’ cup at higher pressures prevents leakage.
This packing is especially well suited to buried, submerged and hard to get to applications. In the unlikely event of stem seal failure these seals
can be easily replaced without removing the bonnet from the valve.
[url=http://www.vatacvalve.com/Product/PlugValve_Class_250.html]Solid One-Piece Ductile Iron Plug
All Viking Johnson Eccentric Plug valves use solid[/url], one-piece ductile iron plugs to ensure maximum flow capacity. Due to the higher strength of
ductile iron (in comparison to cast iron) the thickness of the plug is reduced, resulting in a much larger flow way and greater flow capacity.
Multi-fit Bonnet
The bonnet of all Eccentric Plug Valves are drilled and tapped to accept a close-coupled gearbox or actuator and mounting kit. This can be
accomplished on-site, even with the valve in service.
http://www.vatacvalve.com/Product/PlugValve_Class_250.html
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kuil99
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Trunnion Ball Valves
Trunnion Ball Valves
Global Valve and Controls trunnion design ball valves incorporate the use of upper and lower supports (GVC trunnion plate system) to retain the ball
under pressure. Global Valve and Controls API 6D trunnion ball valves have a secondary sealant injection system for stem seals and seats in the event
of providing a temporary seal to an otherwise damaged area. The Global Valve and Controls trunnion ball valve design using the upper and lower trunnion plate system essentially doubles the safety and reliability of a standard trunnion
ball valve.
The Global Valve and Controls trunnion plate system feature is standard on all Global Valve and Controls API 6D trunnion ball valves from 4” and up
(ANSI 600 through 2500). It permits the valve to be installed in either direction, since the trunnion prevents the ball from shifting -- or worse,
blowing out – under high pressure applications.
Another important benefit of the Global Valve and Controls trunnion plate system design is that it allows the ball to only rotate a quarter turn with
no hysteresis thus more control and reliability under extreme applications.
Global Valve and Controls standard API 6D trunnion ball valves use materials in accordance with NACE MR0175/ISO15156. In order to ensure compliance
customers must provide application specific operating conditions.
The trunnion ball valve is used for cutting or connecting the medium in various pipelines of class150-class2500 and pn16-pn320. It can be suitable
for various media such as water, steam, oil, liquefied gas, natural gas, coal gas, nitric acid, acetic acid, oxidizing media, urea and etc. It is
widely used in such industries as chemical industry, petroleum, natural gas, metallurgy and etc. The driving modes of the trunnion ball valve include
worm and worm gear driving, manual driving, pneumatic driving and electric driving. The trunnion ball valves generally adopt flange connection, and
butt-welding connection is also adopted. The seat can be soft seal seat or metal hard seal seat.
http://www.vatacvalve.com/Product/TrunnionBallValve_Class_241.html
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