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12 Dervos people get QMS internal control licenses
12 Dervos people get QMS internal control licenses
2020-07-10

Dervos held a training course on the quality management system of the ISO 9001:2015. The three-day training was conducted by the leading auditors of Lloyd’s Register, a world-renowned certification authority. Here comes the terrific news that 13 Dervos people from different sectors passed the examination and obtained the qualification to manage internal control of a company. The course was held from July 7 to 10, The specialists of the audit company introduced the profound system in simple words. She praised the competence of our team and emphasized how important it is for a company to run in line with the international legal and regulatory standard requirements. The well-informed auditor said certification obtained according to the ISO 9001 series of standards is an indicator of stable quality of the Company’s operation. The fresh internal auditors we have now can ensure Dervos’s compliance with the requirements of internal, international and industry standards & regulations, and customer requirements. And they also determine the effectiveness of the implemented system in meeting specified objectives (quality, environmental, financial). With our new internal auditors, Dervos will pay more attention to the effectiveness and efficiency in the routine run of the company, in such way can we grow stronger and provide better services.

'Happy day' celebrating activity of Dervos 12th birthday
'Happy day' celebrating activity of Dervos 12th birthday
2020-06-27

June 27th is a big day to Dervos as it marks it has been 12 years since Dervos started to explore the sector of industrial valves. For 12 years, Dervos has been committed to providing the best products and solutions to its customers, and Dervos itself didn't stop learning and growing, eventually, it became what it is today. We at Dervos believe that work hard and play hard. On this special day, Happy day' -- this is how we call it, a whole day of celebration awaits us. At first, we played the surprising video for Eric and Ken, the two founders of this big family, in which we reviewed when we joined Dervos by saying 'Hi, this Dervos of 20XX, how are you?'. From that video, we could learn how Dervos grow from a small company of only two to today's 30-plus. Then the gift-seeking session began. Everyone got a clue like 'the coziest chair in the office', and he or she had to find the sticker hidden in the place and get the gift the sticker shows. For the gifts, it seems everyone was driven crazy and almost turned the office up and down. Finally, of course, no gift eluded.     After a short break, we drove to a game club of trueman room escape--the most popular game in China now. Being divided into 4 teams, we were sent into 4 different themed rooms in which we needed to find the objects to interact with other items in the room to reveal a way to escape in a given time. Guess how many teams were smart enough to pass the game?     The dinner and Karaoke in the evening were also exciting. Everyone, boys and girls, their faces looked so charming and lively in the dim light. Laughter and cheers filled the beautiful night. Everyone enjoyed the wonderful day. This is the beginning of the Devos's 12th year, we will meet in the next 12 years and more.    

Dervos holds 3-day-long marathon mid-year meeting
Dervos holds 3-day-long marathon mid-year meeting
2020-06-23

In a blink of an eye, half of 2020 has already passed. In order to sum up the experience and better deploy and carry out the work in the second half of this year, Dervos held a mid-year meeting from June 21st to 23rd. This meeting is divided into 10 sessions in 3 days, as each department such as the finance department and human resource department gives an account of their work in first half year. What’s worthy to be noted is that our colleagues on behalf of the branch office in Lishui, Zhejiang province also present in this mid-year meeting. Eric, CEO of Dervos, suggested his three-year work plan, as a general guide for Dervos development path in the next few years. In the meeting, he said Dervos should take advantage of its business department, quality inspection department, integration center as its core competitiveness. Eric also expressed his expectation that all sales to be product savvy, industry savvy, customer savvy, business savvy, and supply chain savvy, and required that from now on, every employee would work and study in the factory for at least one month every a year, to learn more know-how about our products and serve our customers much professionally.    In the final meeting, Dervos revealed it’s new edition of employee handbook, and updated salary structure and improved other company rules and regulations, in an attempt to better arrange company works and help the company itself and all of its team members better grow and develop in the future. Once the meeting ends, it marks Dervos, who is born in 2008 June, officially steps into its 12th. Chinese believes that each 12-year marks a circle or periodic growth, so in the last year of Dervos first big circle, please give us your best support and we also promise that we will continue to serve our customers with high-quality and durable products.

WCB Changeover Valve PN40 Handwheel
加载中...

WCB Changeover Valve PN40 Handwheel

The changeover valve is combined by two valves that are different from nominal diameter--one is DN100, the other is DN150. A handwheel is put on the right side of the valve to help control the large WCB-made device. Designed as per DIN 3356, the valve is usually put in the oil industry.

  • 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:

    ASTM A216 WCB
  • Method of Operation:

    Handwheel
Inquiry now
Product Detail

General Discrption

Changeover , also called selector valve, is a three way device usually for changing the direction of the flow in pipelines. It also can be put in the situation of two safety valves and a pressurized system as a pressure relief system where the changeover valve ensures that we always have one standby valve ready for emergency. The condition also permits regular maintenance can be carried out without interrupting the work of the whole device.


The simple design from Dervos allows easy assembly, dis-assemble and easy maintenance. The valve also can handle various applications--high temperatures, cryogenic service, dangerous fluids and many others.


Design Features

Full Bore: The full-bore channel brings superior transporting performance. This valve is also designed to minimize the pressure drop and flow-resistance.


Zero Leakage: With emission-free packing and the static sealing part of the body, which is double-sealed by oval-ring and metal jacketed graphite gasket, the valve meets the demands of corresponding working conditions.


Long service life: The valve enjoys easy maintenance and long service life, which benefits from the plane sealed sealing face of the valve and the alloy welding technology.


Quick Detail

Type

Changeover Valve

Nominal Diameter

DN100*150

NominalPressure

PN40

Construction

Bolted Bonnet

Connection

RF

Operation

Handwheel

Design & Manufacture

DIN 3356

End to End 

TO MFT’S STD

Flange End Dimension

EN 1092-1 B1

Test & Inspection 

EN 12266-1

Temperature Range

-29℃~+425℃

Body Material

ASTM A216 WCB

Big Disc

ASTM A105+13Cr

Media

W.O.G.etc


 

Technical Drawing

 

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. 

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Leave a message

    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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