Inverted Pressure Balanced Lubricated WCB 2 Inch Plug Valve

The 8 inch lubricated plug valve features in inverted and pressure balanced type structure. The flanged metal seated plug valve is suited for natural gas application. Quick Detail Type Plug Valve Size 8'' Design Pressure 300LB Construction Lubricated Type, Inverted Type, Pressure Balanced Type, Metal Seated Connection Type Flanged Connection Operation Gear Operated Design Code API 599 Face to Face ASME B16.10 End Connection ASME B16.5 Pressure & Temp ASME B16.34 Test & Inspection API 598 Body Material WCC Temperature Range -29℃~+425℃ Application Water, Oil, Gas Dimension Class Size 1 1/2 2 2 1/2 3 4 6 8 10 12 300 B 191 216 241 283 305 403 419 457 502 C 156 165 191 210 254 318 381 445 521 D 20.6 22.2 25.4 28.3 31.8 36.5 41.3 47.6 50.8 E 169 178   219 235 362       F 106 118   143 165 187 248 300 392 O 73 92.1 105 127 157 216 270 324 381 Weight(RF) 16 21   38 60 101 192 281 508 Related Knowledge What is a plug valve? Plug valve is a quater-turn valve whose plug rotates around the centerline of valve body to realize on-off function. The plug valve is used for cutting off, distributing and changing the flow directoin. Currently, plug valves are mainly applicable for small size, normal temperature, and low pressure conditions. The advantages of plug valve are shown below: -Quick opening and closing the valve -Small fluid resistance -Reliable leak-tight service -Available inline maintenance 

The inverted pressure balanced lubricated plug valve is 2inch and 150 LB. Manufactured as per API6D, the valve is capable in manifolds and production services of oil fields, asphalt plants, others.

The cast steel lift non return check valve is designed with piston type disc, bolted bonnet, and PN16 RF flange. The spring loaded check valve conforms to DIN 3356. Quick Detail Type Check Valve ( Non-return Valve) Nominal Diameter DN 150 NominalPressure PN 16 Construction Lift Type / Piston Type, Bolted Bonnet Connection Flanged Connection Design & Manufacture DIN 3356 End to End EN 558 Connection EN 1092 Test & Inspection EN 12266 Body Material Carbon Steel GS C25 Media W.O.G. Product Range Body material: CS, SS, Alloy Steel, CI, Bronze, Brass  Size Range: 2”~12” (DN50~DN300) End Type: Butt Weld, Socket Weld, Flanged, Screwed Pressure Range: 150lbs~2500lbs (PN16~PN420) Temperature Range: -46℃~ +425℃ Related Knowledge What is a piston check valve? Usually, we have swing type check valve and lift type check valve. A piston check valve and ball check valve both belong to lift type check valve. In a lot of cases, a piston check valve use spring to retain the disc in closed position. The structure of a piston check valve is very similar to the globe valve just without manual operation.  Due to its piston type disc and superior leak tight characteristic, the piston check valves are suitable for small size and high pressure conditions.

The DN80 PN16 cast iron gate valve has face to face dimension as per DIN3202 F4 or DIN3202 F5. This GG25 gate valve is designed with resilient seat, non rising stem, bb, RF flange, suitable for water treatment application. Quick Detail Type Gate Valve Nominal Diameter DN 80 Nominal Pressure PN 16 ConstructionType Non-rising stem, Bolted Bonnet, Resilient Seat ConnectionType Flanged OperationType Handwheel Operation Body Material Cast Iron GG25 TrimMaterial Cast Iron Wedge, SS420 Stem, EPDM Seat Design Code DIN 3352 End to End Code DIN 3202 Flange Dimesion DIN 2501 Medium Water Origin China Design Feature 1.Resilient seat for good sealing performance 2.Low flow resistance and small pressure drop 3.Non-rising stem for installation space is limited 4.No limitation for flow direction of medium 5.Epoxy painting available for internal and external part of the valve for anti corrosive function Company Brief Introduction Specializing in valve industry over 10 years, Dervos becomes the leading vendor of gate, globe, check, ball, butterfly, plug valves and strainers. We serve oil and gas user such as LUKOIL, MOL, YPF with local partners. Dervos show its advantages in: 1. Our partnerships with tens of stable suppliers allow us to provide customers with a wide range of high-quality products at a competitive price. 2. Each order is under strict quality control with inspection reports before delivery. 3. We value delivery time as much as our customers do. With the powerful purchasing system, we follow each order closely to secure on-time delivery. 4. One-stop solutions will be offered in a timely manner

API602 Gate Valve Bolt Bonnet Outside Screw Yoke Solid Wedge Full Bore Integral Raised Face Flange Connection A105N Body Trim 13Cr 150LB 300LB 1/2 inch 3/4 inch A182 F6a Seat/Wedge /Stem, 304+Graphite/Gasket 

The 10 inch Dual-Plate WAFER Check Valve is made of WCB and is eligible to be put under pressure up to 30LB. All Dervos check valves are tested to API 598 and must meet or exceed all applicable API, ANSI and ASTM Standards.

The 1 inch 1500LB y strainer is made of forged steel body and stainless steel 304 as the screen material. The high pressure y strainer with sw end is designed as per ASME B16.34. Design Feature 1.Forged Steel Body 2.Stainless Steel Screen 3.Customized Mesh for Screen 4.Installed Horizontally or Vertically 5.Ability to handle higher pressure Quick Detail Type Strainer Size 1'' DesignPressure 1500LB Construction Y Type Strainer, Bolted Bonnet ConnectionType SW ( Socket Weld) Design Code ASME B16.34 Face to Face ASME B16.10 End Connection ASME B16.11 Pressure & Temp ASME B16.34 Test & Inspection API 598 Body Material ASME A105 ScreenMaterial SS304 TemperatureRange -29℃~+425℃ Application Water, Oil, Gas Related Knowledge What is the difference between Y strainer and basket strainer? Both y strainer and basket strainer take their name from their configurations. There are four differences between them. -First, y strainer can be installed either horizontally or vertically. But in most cases, basket strainer could only be in horizonal position. -Second, y strainer could handle higher pressure rating than basket type. -Third, for the ability to screen particulate, basket strainers are better than y strainers. -Lastly, basket strainer is easier to be cleaned than the y type strainer. In conlusion, Y-strainers are applicable for high-pressure pipelines with a low concentration of particles & solids and less cleaning needs. Vice versa for basket type strainer.

With butt weld end and gearbox, the fully welded ball valve is designed per ASME B16.34. The one piece ball valve has trunnion type ball, antistatic design and full port structure. Quick Detail Type Ball Valve Size 10" Pressure ANSI 300 Construction Trunnion Type, One Piece Body, Full Bore, Fully Welded Connection Butt Weld (BW) Operation Gearbox Body Material Forged Steel A105 Design API 6D Pressure & Temp ASME B16.34 Face to Face ASME B16.10 End Connection ASME B16.25 Inspection API 598 Temperature Range -29℃~+125℃ Media W.O.G Related Knowledge What is a fully welded ball valve? What is the benefit and advantage of a fully welded ball valve? A fully welded ball valve is welded after forging without any bolted connection on the body. Compared with flanged ball valve, it features in maximum strength at minimum weight. The design of the valve gives it advantage: -Overall small size and light weight -Fewer leak paths on the body  -High machining precision of ball part -High resistance to external and internal pressure and strength Our Service Dervos customer service is one of our biggest competitive advantages. In Dervos, we provide- 1.Quotation within 24 hours or no later than 3 days This will let you meet the quotation submission deadline and enhance your working efficiency  2.Weekly status report of your order In this way, you will have a clear picture of your order. You do not need to waste time on pushing us for status update 3.An 18-month warranty period A warranty certificate will issued after shipment and you will not have any concern after buying valves. 4.Solutions to complaints within 3 days Quick and responsible actions to complaints will protect your reputation and reduce the financial loss as much as possible.

The 1.5 inch 800LB bellow seal globe valve is designed with outside screw and yoke, handwheel operation, sw end. The reduced port globe valve is has forged steel A105N body. Design Feature 1.Outside screw and yoke 2.Rising stem 3.Bolted bonnet design 4.Bellow seal packing for reliable stem sealing 5.Reduced bore design 6.Handwheel Operated Quick Detail Type Globe Valve Size 1.5'' Design Pressure Class 800 Structure BB, OS&Y, Reduced Port, Bellow Seal Packing Connection Type Socket Weld Operation Handwheel Design Code API 602 End to End ASME B16.10 Connection End ASME B16.11 Pressure & Temperature ASME B16.34 Test & Inspection Standard API 598 Body Material Forged Steel ASTM A105 Trim Material Trim 8 Applicable Temperature -29℃~+425℃ Application W.O.G Origin China Related Knowledge What is a bellw seal valve? For bellow seal globe valves, the lower end bellows is welded on the valve stem to prevent the process fluid from eroding the valve stem. The other end is placed between the valve body and the valve cover to form a static seal. The double seal design ensure that if bellow seal pakcing fails, the stem packing will also function.  The bellow seal globe valves are applicable for media like steam, flammable, explosive, heat transfer oil, high purity, and toxic media etc. Special Tests Besides general tests we will do (hydraulic and air test), we could also do tensile strength test, metallographic test, fugitive emission test, and NDE test (UT,RT,PT,MT) upon customers’ specific requests.

The Class 1500 4'' cryogenic ball valve is designed with extended stem for low temperature application. The valve is made of LF2 with fully welded body, butt weld end and gearbox operation.  Design Feature -Fully welded & forged body -Extended stem or bonnet -Full port design and piggable -Anti blow-out stem -Antistatic function - Automatic cavity relief -Bi-directional seat and DBB design -With stem and seat grease fittings Quick Detail Type Ball Valve Size 4" Pressure ANSI 1500 Construction One-Piece Body, Fully Weld, Extended Stem or Bonnet, Full Port Connection Butt Weld Operation Gearbox Operated Body Material Low Temperature Steel A350 LF2 Design Code API 6D Pressure & Temp ASME B16.34 End to End Dimension ASME B16.10 End Connection ASME B16.25 Inspection API 598 Temperature Range -46℃~+200℃ Media Oil, Water, Gas Related Knowledge What is the difference between full bore and reduced bore ball valve? The internal diameter of a full bore ball valve is the same as the inner diameter of the pipe. The full bore ball valve has little resistance and pressure drop to the flow. Plus, the full bore ball valve is piggable. However, the internal diameter of a reduced port (standard port) ball valve is smaller than the inner pipe size. Flow restriction caused by the reduced port will cause a pressure drop. And sometimes a pig to clean the pipe will get stuck in the reduced port ball valve. Certificates Dervos could provide reports upon clients’ requests, such as ISO 9001, PED CE, EAC, API 607, API 6D, API 6A and etc.

Designed with 800 LB sw end, the 2 inch globe valve features in plug disc, bolted bonnet, and y type structure. The handwheel operated globe valve is made of forged steel body and stainless steel trim. Quick Detail Type Globe Valve Size 2'' Pressure ANSI 800 Structure Y Type, Y Pattern, Bolted Bonnet ConnectionType SW Operation Handwheel Operated Design Code API 602 Face to Face ASME B16.10 Connection Standard ASME B16.11 Pressure & Temperature ASME B16.34 Test & Inspection Standard API 598 Body Material ASTM A105 ApplicableTemperature -29℃~+425℃ Application Water, Oil, Gas Related Knowledge What is the main reason to use Y-pattern globe valve? A Y type globe is designed with 45° between seat and stem. In other words, the flow will remain straight linear from inlet to outlet ports.Compared to staight pattern globe valve, the y pattern globe valve reduce the flow resistance and pressure drop. This kind of y pattern globe valve is well suited for high pressures and severe application. FAQ 1. How long have you been in business and how long have you producing valves? We have been in valve exporting industry for more than 10 years since foundation in 2008. Our business has expanded tremendously to five continents all around the world.  2. What are your main products and their advantages? Our main products include gate, globe, check, ball, butterfly, plug valves and strainers, available in different materials, sizes and pressure, which are widely used in various industries. 3. Does Xiamen Dervos Valves Industry Co., Ltd. make products for other companies? Yes, of course. We have a reference list with customer information like country, product type, order volume and some even with project names.

The 2 inch 1500LB globe valve, made of ASTM216 WCB, is designed as per BS 1873. It is operated by a handwheel and is connected with pipeline by RTJ. The body and the disc of the globe valve contain 13Cr, therefore this valve enjoys a better ability to resist corrosion.   Quick Detail Type Globe Valve Nominal Diameter 2 Inch NominalPressure 1500LB Construction Bolted Bonnet Connection RTJ Operation Handwheel Design & Manufacture BS 1873 End to End  ASME B16.10 Flange End Dimension ASME B16.5 Test & Inspection  API 598 Temperature Range -29℃~+425℃ Body Material ASTM A216 WCB +13Cr Disc Material ASTM A105 WCB +13Cr Media W.O.G. Dervos Quality Checking System In Dervos, we control quality throughout the whole manufacturing process.   Casting inspection: We can find out the problem of raw material, such as shoddy casting, unqualified wall thickness, chemical composition and so on, which ensure that you will not be cheated.     Machining Inspection: On the one hand, we could ensure machining accuracy through this process. On the other hand, we could find out machining mistake as early as possible, to win more time for repairing and remaking   Final Inspection: Final inspection activities include document and QC record review, visual examination, dimension check, pressure test, painting and packing check. You don’t need to come and inspect in person and all the documents could be provided as proof.