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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.

Pressure Seal Bonnet Gate Valve
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Pressure Seal Bonnet Gate Valve BW 8 Inch 2500LB

  • Payment:

    30% T/T When Order, 70% T/T Before Shipment
  • Product Origin:

    China
  • Color:

    Customization
  • Shipping Port:

    Shanghai China
  • Lead Time:

    35~60 days Ex Works After Order Confirmation
  • Material:

    Alloy Steel Gate Valve WC6
  • Method of Operation:

    Gear Operated Gate Valve
Inquiry now
Product Detail

The 8 inch Class 2500 gate valve is designed with pressure seal bonnet, butt weld connection, and gearbox operation. The 8 inch gate valve has carbon steel WCB body and trim 5.


Quick Detail

Type

Gate Valve

Size

8''

Design Pressure

ANSI 2500

Construction

Pressure Seal Bonnet, Flexible Wedge, Metal to Metal Seat

ConnectionType

Butt Weld (SW)

OperationType

Gearbox Operation

Body Material

A217 WC6

TrimMaterial

Trim 5

Design Code

API 600

Face to Face Dimension

ASME B16.10

End Connection

ASME B16.25

Pressure & Temp

ASME B16.34

Medium

Water, Oil and Gas

Origin

China


Dimension & Material

PSB Gate Valve With Butt Weld End

NPS      DN Class 2 2 1/2 3 4 6 8 10 12 14 16 18 20 24
50 65 80 100 150 200 250 300 350 400 450 500 600
L(RF) 900LB 368 419 381 457 610 737 838 965 1029 1130
1500LB 368 419 470 546 705 832 991 1130 1257 1384
2500LB 451 508 578 673 917 1022 1270
L1(BW) 900LB 216 254 305 355 508 660 787 914 991 1092 1346 1473 1600
1500LB 216 254 305 406 559 711 864 991 1067 1194 1697
2500LB 279 330 368 457 610 762 914 1041 1118 1245
L2(RTJ) 900LB 371 422 384 460 613 740 841 968 1038 1140
1500LB 371 422 473 549 711 841 1000 1146 1276 1407
2500LB 454 514 584 683 927 1038 1292
H(Opne) 900LB 554 637 680 796 1084 1372 1494 1550 1960 2210
1500LB 554 637 767 875 1094 1372 1655 1834 2150 2260 2460 2721 2940
2500LB 610 654 753 850 1254 1374 1685 1894 2226 2382 2585
W 900LB 300 350 350 400 560 460* 610* 610* 610* 760*
1500LB 300 450 450 560 305* 460* 610* 610* 760* 760*
2500LB 500 500 600 600 460* 460* 610*
Weight   (RF) 900LB 50 84 92 154 341 622 950 1295 1720 2380
1500LB 60 91 128 182 394 795 1370 2120 2800 3870
2500LB 121 175 195 229 720 1295 2250
Weight   (BW) 900LB 39 64 82 120 266 524 760 1090 1450 2018
1500LB 46 71 85 130 292 578 974 1615 2010 2815 3315 4150 5219
2500LB 88 135 144 158 500 892 1550 1978 2580 3780 5988
*Manual gear operator is recommended



No. Part WCB WC6 WC9  C5 CF8 CF8M
1 Body A216 WCB A217 WC6 A217 WC9 A217 C5 A351 CF8 A351 CF8M
2 Seat A182 F6a A182 F22 A182 F22 A182 F5 A182 F304 A182 F316
3 Wedge A216 WCB A217 WC6 A217 WC9 A217 C5 A351 CF8 A351 CF8M
4 Stem A182 F6a SAEHNV3 A182 F304 A182 F316
5 Stuffing Box A216 WCB A217 WC6 A217 WC9 A217 C5 A351 CF8 A351 CF8M
6 Seal Ring ANSI 316L Flexible Graphite+316
7 Split Ring Steel F6 F6 F6 A182 F304 F316
8 Back Ring Steel Steel Steel Steel SS SS
9 Bolt A193 B7 A193 B7 A193 B7 A193 B7 A193 B8 A193 B8
10 Nut A194 2H A194 2H A194 2H A194 2H A194 Gr.8 A194 Gr.8
11 Yoke A216 WCB A217 WC6 A217 WC9 A217 C5 A351 CF8 A351 CF8M
12 Bolt A193 B7 A193 B7 A193 B7 A193 B7 A193 B8 A193 B8
13 Nut A194 2H A194 2H A194 2H A194 2H A194 Gr.8 A194 Gr.8
14 Packing Plate ANSI 410 ANSI 410 ANSI 410 ANSI 410 ANSI 304 ANSI 316
15 Packing Flexible Graphite(Braided and Ring) or PTFE
16 Split Pin Steel Steel Steel Steel Steel Steel
17 Eyebolt A193 B7 A193 B7 A193 B7 A193 B7 A193 B8 A193 B8
18 Gland A182 F6 A182 F6 A182 F6 A182 F6 A182 F304 A182 F316
19 Gland Flange A105 A105 A105 A105 A182 F304 A182 F316
20 Nut A194 2H A194 2H A194 2H A194 2H A194 Gr.8 A194 Gr.8
21 Stud A193 B7 A193 B7 A193 B7 A193 B7 A193 B7 A193 B7
22 Stem Nut Ni-resist A439-D2
23 Gear Box Purchased
24 Protector Steel
25 Nameplate ANSI 304
26 Rivet ANSI 304


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