YPFB (Yacimientos Petrolíferos Fiscales Bolivianos) as Bolivia's state-owned oil and gas company, plays a critical role in the exploration, production, and distribution of oil and natural gas across Bolivia. It has a strong commitment to quality and innovation. DERVOS VALVE is honored to have passed the qualification review and become one of contract valve suppliers of YPFB. • Supplier Qualification Requirements for YPFB Becoming a supplier for YPFB requires meeting several stringent qualifications. YPFB looks for suppliers with a proven track record of reliability, technical expertise, and product quality. This includes compliance with international industry standards and certifications,along with the ability to provide high-performance products that meet the specific needs of Bolivia’s oil and gas industry. The process also involves submitting detailed technical documentation, including certifications, safety records,and previous successful project references. • Application Process to Become a YPFB Supplier The application process to become a certified supplier for YPFB is highly competitive and rigorous. The first step is to submit an official application, followed by a review of the company’s credentials. Dervos Valve underwent this process and provided comprehensive technical documentation, including product specifications and compliance with safety standards. Our team also participated in interviews and site visits, showcasing our manufacturing capabilities and commitment to quality. DERVOS VALVE will supply a range of valves to YPFB for use in their oil and gas operations, including high-performance ball valves, gate valves, globe valves, and check valves. These products are crucial for ensuring the safety and efficiency of operations in challenging conditions. Dedicated to consistent product quality through daily operations, we ensure excellence in performance. Our ongoing commitment is providing partners with professional support and premium services, fostering mutual growth and win-win success.
To mark this milestone in Dervos Valve’s journey, we came together not just to celebrate, but to connect with the partners who have supported us along the way. This anniversary is a tribute to enduring partnerships and a sha- red vision for the future. On the occasion of Dervos Valve’s 17th anniversary, our valued partners were specially invited to visit our headquarters for in-depth, face-to-face exchanges with the team. These meaningful interactions deep- ened mutual understanding andtrust, laying a solid foundation for even stronger cooperation in the future. Accompanied by our team, the clients toured the office area and were introduced to colleagues from various departments. The interactions were relaxed and friendly, creating a warm atmosphere that further strengthened mutual understanding. Following the tour, our sales team delivered a themed presentation on “Dervos 17th Anniversary,” offering the clients a comprehensive overview of the company's development journey, core strengths, and service philosophy. We also expres- sed our heartfelt gratitude and warm welcome to our valued partners. Through this session, the clients gained a deeper understanding of Dervos, enabling us to better tailor our services to their needs. They expressed strong appreciation for Dervos’ steady growth and thanked us for inviting them to be part of this meaningful celebration. In front of the company’s cultural wall, clients took a moment to sign and leave messages, expressing their well wishes for Dervos. This moment not only reflected cultural recognition but also a genuine expression of the emotional bond and trust shared through our partnership. Next, we arrived at the highlight of the anniversary celebration— the Dervos Valve 17th Anniversary Gala Dinner, a moment of gratitude and shared celebration. We arranged a visit to the "Yu Jian Minnan" Cultural Park for our clients, where they explored the ancient architectu- ral district and experienced the traditional art of rubbings, immersing themselves in the charm and craftsman- ship of Chinese culture. In the evening, a red carpet was laid out in front of the hotel, where the Dervos team warmly welcomed guests, coming together with partners from around the world to witness this moment of honor. As the lights came on, the anniversary gala dinner officially began. The venue was decorated in a grand and festive style, with a warm and lively atmosphere. The event kicked off with a performance that blended both Eastern and Western cultures,featuring a lineup of classic foreign songs and traditional Chinese pieces, showcasing Dervos' open and inclusive brand spirit, with a global outlook. During the interactive games and lucky draw sessions, guests actively participated and enjoyed themselves, with laughter and joy filling the air. This lively atmosphere showcased the cohesion and energy of the Dervos team. As the familiar melo...
On the occasion of Dervos Valve’s 17th anniversary, we proudly continued our tradition by inviting partners from Australia, Turkey, Italy, Russia, Argentina, South Africa, the United States, and other countries to gather in the ancient city of Xi’an to witness this milestone together. This event was not only a continuation of long-standing partnerships but also a testament to mutual trust. Dervos warmly welcomed our global partners, and through in-depth exchanges, both sides further deepened cooperation and understanding. The gathering showcased Dervos’ openness as a global valve brand and its confidence in sharing Chinese culture. To help our overseas guests gain deeper insights into Chinese heritage, we thoughtfully organized a cultural tour of Xi’an. Highlights included visits to the UNESCO-listed Terracotta Warriors, a walk atop the ancient city wall, scenic views at the Giant Wild Goose Pagoda,and hands-on experiences such as trying on traditional Hanfu attire—activities that were greatly enjoyed by our international friends. In front of the Terracotta Army of Emperor Qin Shi Huang, our guests were deeply impressed and inspired as they carefully admired the grandeur of this underground legion. Captivated by its majestic scale and historical significance, they took group photos to commemorate the moment—creating unforgettable memories of thisawe-inspiring experience. Guests strolled leisurely beneath the Xi’an City Wall, taking photos and sharing conversations, while enjoying the rich blend of history and culture that surrounds this ancient landmark. Guests strolled leisurely beneath the Giant Wild Goose Pagoda, soaking in the unique charm of Xi’an where history and culture intertwine. Our international guests enthusiastically took part in trying on traditional Hanfu and sampling Xi’an’s signature local cuisine. They frequently paused for photos, fully immersed in the authentic cultural atmosphere. The first leg of Dervos’ 17th anniversary celebration came to a successful close, leaving every participant with joyful memories. More than just a journey, the Xi’an visit deepened the trust and friendship between Dervos and its global partners. The Xi’an journey marks only the beginning of Dervos’ 17th anniversary celebrations—more exciting events are on the way. We sincerely thank every partner for your continued support. Let us witness our growth together and stride toward a broader, brighter future.
Payment:
30% T/T When Order, 70% T/T Before ShipmentProduct Origin:
ChinaShipping Port:
Shanghai ChinaLead Time:
35~60 days Ex Works After Order ConfirmationMaterial:
Low Temperature Steel Ball Valve, A350 LF2Method of Operation:
Gearbox Operated Ball ValveThe 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.
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.
The 4 inch cryogenic ball valve, designed as per API609, has many parts equipped RPTFE --It has the lowest coefficient of friction and the best corrosion resistance of any known plastic material, so that the valve can handle quite extreme situations.
The 2 piece type floating ball valve has full port, fire safe design, anti blowout stem, ANSI 150 flange and lever operation. The carbon steel ball valve is designed with A216 WCB body, F316 stem and ball, PTFE soft seat. Quick Detail Type Ball Valve Size 4" Pressure 150 LB Construction Floating Type Ball, Two Piece Body, Full Bore Connection Raised Face Flange End Operation Wrench Operation Body Material Cast Steel WCB Trim Material SS316 &PTFE Design Standard API 6D Pressure & Temp Code ASME B16.34 Face to Face ASME B16.10 End Connection ASME B16.5 Inspection Code API 6D Temperature Range -29℃~+125℃ Media Water, oil and gas Material & Dimension No Part Name Carbon steel to ASTM Stainless Steel to ASTM WCB LCB CF8 CF8M CF3 CF3M 1 Body A216 WCB A352 LCB A351 CF8 A351 CF8M A351 CF3 A351 CF3M 2 Bonnet nut A194 2H A194 4 A194 8 3 Bonnet bolt A193 B7 A320 L7 A193 B8 4 Cap A216 WCB A352 LCB A351 CF8 A351 CF8M A351 CF3 A351 CF3M 5 Gasket SS Spiral Wound/graphite or SS Spiral Wound/PTFE 6 Ball A105/Ep.Cr or F6 A182 F6 A351 CF8 A351 CF8M A351 CF3 A351 CF3M 7 Seat Ring RPTFE or POM 8 Small spring Stainless Steel 9 Small ball A182 F304 A182 F316L 10 Stem A182 F6 A182 F6 A182 F304 A182 F316 A182 F304L A182 F316L 11 Stem Seat PTFE 12 Stem Packing PTFE or Graphite 13 Gland A182 F6 A182 F304 A182 F316 A182 F304L A182 F316L 14 Gland Bolt A193 B7 A193 B8 15 Galnd Flange A216 WCB A351 CF8 16 Positioning Plate Steel 17 Wrentch A216 WCB The material is according to ASTM standard CLASS 150 DN mm 15 20 25 40 50 65 80 100 150 200 250 NPS in 0.5 0.75 1 1.5 2 2.5 3 4 6 8 10 L (RF) mm 108 117 127 165 178 191 203 229 394 457 533 in 4.25 4.6 5 6.5 7 7.5 8 9 15.5 18 21 L1 (BW) mm 140 152 165 190 216 241 283 305 457 521 559 in 5.5 6 6.5 7.48 8.5 9.5 11.13 12 18 20.5 22 L2 (RTJ) mm 119 129.7 139.7 178 191 203 216 241 406 470 546 in 4.69 5.11 5.5 6.9 7.5 8 8.5 9.5 16 18.5 21.5 H mm 66 74 87 105 132 152 182 215 250 285 495 in 2.6 2.9 3.48 4.2 5.28 6.08 7.28 8.6 10 11.4 19.5 Do(W) mm 130 130 160 230 400 400 600 850 1100 1500 *350 in 5.1 5.11 6.3 9 15.74 15.74 23.62 33.46 43.3 59 13.8 RF(Kg) 2.3 3 4.5 7 15 20 25 40 97 160 240 BW(Kg) 2.0 2.5 3.8 5.8 12 17 21 36 92.8 154 227 *Worm Gear or Electric actuator operated Special Tests & Inspections In addition to regular hydraulic testing and air testing, Dervos could also do specials test as per clients’ requests, such as PT test, RT test, UT test, cryogenic test, low leakage test, fire proof test, and hardness test and so on.
The 8 inch non return check valve conforms to BS 1868 design code, with bolted bonnet and swing type disc. The flanged check valve is made of carbon steel A216 WCB. Design Feature 1.BB: bolted bonnet 2.Swing type disc 3.Reduced bore design 4.Superior flow rates 5.Minimized friction loss 6.Standard trim material for selection 7.External or internal hinge pin available on request 8.Cylinder and counter weight available on request 9.Bare stem and actuators are available on request Quick Detail Type Check Valve Size 8'' Design Pressure ANSI 1500 Construction Bolted Bonnet, Swing Type Connection Raised Face Flange Design & Manufacture BS 1868 End to End ASME B16.10 Connection ASME B16.5 Pressure & Temp ASME B16.34 Test & Inspection API 598 Body Material Carbon Steel Applicable Temp -29℃~+400℃ Media W.O.G. Dimension Class 1500 NPS in 2 2 1/2 3 4 6 8 10 12 DN mm 50 65 80 100 150 200 250 300 L-L1 (RF-BW) in 14-1/2 16-1/2 18-1/2 21-1/2 27-3/4 32-3/4 39 44-1/2 mm 368 419 470 546 705 832 991 1130 L2 (RTJ) in 14-5/8 16-5/8 18-5/8 21-5/8 28 33-1/8 39-3/8 45-1/8 mm 371 422 473 549 700 841 1000 1146 H (OPEN) in 12-1/4 12-1/4 13 14 15-3/4 20-7/8 22-1/16 25-5/8 mm 310 310 330 355 400 530 560 650 WT (kg) RF 69 93 140 232 490 990 1490 1970 BW 49 74 111 185 375 803 1250 1625
3/4" 800LB forged steel gate valve is made according to API 602 standard. The valve body is made of A105N. It has the structural characteristics of bolt cover, rising stem, OS&Y, reduced diameter. Its connection mode is SW. And it has hand wheel operation mode.
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 swing check valve is made of A216, a kind of WCB. Manufactured according to BS1868, the check valve is 6 inch and 150LB. And the valve is capable in working temperature between -19 to 425 degree Celsius.
4" 150LBS check valve is made according to API 594 standard. The valve body is made of A216 WCB+STL. It has the structural characteristics of dual plate. Its connection mode is wafer type.
API6D swing type check valve RF connnection bolted bonnet full pore WCB body, WCB+13Cr disc, A105+13Cr seat ring, WCB hinge. Suitable temperature in -29℃~+425℃ Quick Detail Type Swing Check Valve Size 4 inch-6 inch Design Pressure CL600 Construction BC, Swing type ConnectionType Flange OperationType - Body Material WCB DiscMaterial WCB+13Cr Hinge Material WCB Seat Material A105+13Cr Design Code API 6D Face to Face Dimension ASME B16.10 Test and Inspect API 598 Pressure & Temp ASME B16.34 Medium Water, Oil and Gas Origin China
The 1 inch 800LB female threaded globe valve has plug disc, reduced port and manual handwheel operation. The valve is made of A105N body and trim 5 as per API 602. Quick Detail Type Globe Valve Size 1'' Pressure Class 800 Construction Bolted Bonnet, Reduced Port, Outside Scew & Yoke ConnectionType NPT Female Thread OperationType Handwheel Operated Design Code API 602 End to End Dimension ASME B16.10 Connection ASME B1.20.1 Pressure & Temp ASME B16.34 Test & Inspection API 598 Body Material Forged Steel A105 TrimMaterial 13CR+Stellite Temperature Range -29℃~+427℃ Application Water, Oil, Gas Origin China Product Range 1.Size up to 4 inch 2.Design pressure between 150LB to 2500LB 3.Connection: flange, socket weld, thread 4.Operation: handwheel, gearbox, bare stem, with actuators 5.Body material: carbon steel, stainless steel, alloy steel 6.Trim material: trim 1, 5, 8, 10, 12, 16 and ect. 7.Bolted bonnet, pressure sealed bonnet, welded bonnet, screwed bonnet 8.Reduced bore, full bore Inspection Reports Along with each order, Dervos will provide inspection reports and material test reports free of charge after shipment. All these certificates will let you have a clear picture of inspection process and results. Plus, these reports can be used for traceability.
DN200 PN16 Bellow Seal Globe valve is made according to BS EN 13709 standard. The valve body is made of EN 10213 1.4408. It has the structural characteristics of body cover bolt, rising pole bracket, angle type, corrugated pipe seal and structural length of 255mm. Its connection mode is RF. And it has hand wheel operation mode.
10’’ 300LB gate valve is made according to API 600 standard. The valve body is made of ASTM A217 C5 + STL. It has the structural characteristics of rising stem and bolt cover. The gate valve connected by flange has the operation mode of hand wheel.
DN25 PN25 Forged Steel Globe Valve is made according to ISO15761 standard. The valve body is made of A182-F5a. It has the structural characteristics of BB, OS&Y, solid wedge. Its connection mode is EN1092-1 / B1. And it has hand wheel operation mode.
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