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Dervos Becomes YPFB's Qualified Valve Supplier
Dervos Becomes YPFB's Qualified Valve Supplier
2025-07-16

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.  

Global Partners Reunite to Celebrate Dervos' 17th Anniversary Milestone
Global Partners Reunite to Celebrate Dervos' 17th Anniversary Milestone
2025-07-03

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...

 Global Partners Go Together to Celebrate Its 17th Anniversary, Starting in Historic Xi' an
Global Partners Go Together to Celebrate Its 17th Anniversary, Starting in Historic Xi' an
2025-07-03

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.  

MSS SP-81 Manual Lug Type Knife Gate Valve Bi-directional
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MSS SP-81 Manual Lug Type Knife Gate Valve Bi-directional

The knife gate is a bi-directional lug type valve designed according to MSS-SP-81 and for industrial service applications. The design of the body and seat assures non-clogging shut off on suspended solids in industries.

  • Payment:

    30% when order confirmed, 70% before shipment
  • Product Origin:

    China
  • Color:

    Customization
  • Shipping Port:

    Shanghai, China
  • Lead Time:

    30~60 days Ex Works after order confirmation
  • Material:

    2205
  • Method of Operation:

    Handwheel
Inquiry now
Product Detail

Quick Detail

Type

KnifeGate Valve

Size

6''

Design Pressure

150LB

Construction 

Knife Type Gate Valve

Connection Type

Lug Type, RF

Operation Type

Hand wheel

Body Material

2205

Seat Material

EPDM

Design Code

MSS SP-81

Flange Dimensions

ASME B16.5

Temp. Range:

-29~.+120℃

Medium

Water, Oil and Gas

Origin

China


Features

All stainless steel design

Standard knife gate valves: NPS 2–24 (DN 50–600)  

Bolted bonnet knife gate valves: NPS 4–24 (DN 50–600)

ASME Classes: 1690-4500  

0-14ph packing standard

Locking device on standard knife gate valve

Environmentally friendly bi-directional bolted bonnet and standard body styles

Resilient and metal seats


Technical Drawing


Before Manufacturing

Nameplate&Packaging


Reports

For each order, Dervos will provide inspection reports to show you the whole inspection process and results. Plus, we will provide material report to let you know that the material we provide is as per standards.



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    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.

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