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Old 11-09-2012, 03:53 AM   #1
cdfg56
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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/G..._Class_247.html
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Old 11-09-2012, 03:59 AM   #2
cdfg56
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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/G..._Class_246.html

Forged Steel
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Old 11-09-2012, 04:00 AM   #3
cdfg56
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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/G..._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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Old 11-09-2012, 04:01 AM   #4
cdfg56
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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/S..._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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Old 11-09-2012, 04:02 AM   #5
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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/R..._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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Old 11-09-2012, 04:06 AM   #6
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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/W..._Class_249.html
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Old 11-09-2012, 04:40 AM   #7
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