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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.

SS High Performance Butterfly Valve
加载中...

Double Offset High Performance Butterfly Valve CF8M 3 Inch

  • Payment:

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

    China
  • Color:

    Customization
  • Shipping Port:

    Shanghai China
  • Lead Time:

    30~55 days Ex Works After Order Confirmation
  • Material:

    Stainless Steel Butterfly Valve
  • Method of Operation:

    Lever Butterfly Valve, Manual Butterfly Valve
Inquiry now
Product Detail

The double offset high performance butterfly valve, with lever operation and lug body, is designed per API 609. The CF8M body and PTFE seat butterfly valve is more durable in serving the application.


Quick Detail

Type

Butterfly Valve

Size

3''

Design Pressure

150LB

Construction

Double Eccnetric, Soft Seat

Connection Type

Lug

Operation

Wrench Operated

Design Code

API 609

Face to Face

ASMEB16.10

End Connection

ASMEB16.5

Test & Inspection

API 598

Body Material

Stainless Steel CF8M

Temperature Range

-29℃~+150℃

Application

Water, Oil, Gas


Dimension

High Performance Butterfly Valve Manufacturers

Class 150
DN mm 40 50 65 80 100 125 150 200 250 300 350 400
NPS in 1 1/2 2 2 1/2 3 4 5 6 8 10 12 14 16
L mm 127 127 127 127 152 203.2 203.2 203.2 203.2
in 5 5 5 5 6 8 8 8 8
L1 mm 38.1 46 50.8 48 54 63.5 57 63.5 71.5 81 92 101.5
in 1.5 1.81 2 1.88 2.13 2.5 2.25 2.5 2.81 3.19 3.62 4
H mm 185 190 220 229 239 252 284 307 337 392 435 481
in 7328 7.48 8.7 9 9.4 9.9 11.2 12 13.3 15.4 17.1 19
D(W) mm 160 160 160 160 160 160 160 200 200 250 250 300
in 6.3 6.3 6.3 6.3 6.3 6.3 6.3 7.9 7.9 9.8 9.8 11.8
Weight  (Kg) mm 12.5 13.5 17 38 72 105 148 182 230
in 8 9 10 10 11 14.5 34.2 66 98 134 168 200


Related Knowledge

What is a high performance butterfly valve?


A high performance butterfly valve is often designed with double offset and PTFE seat, to handle everything from general applications to viscous and corrosive liquids; corrosive gases and steam.


Compared to concentric resilient seat butterfly valve, the disc of the high performance butterfly valve is arranged and positioned off the center of the pipe bore, which could reduce wear and tear to the valve during operation and increase sealing performance.


In conlusion, high performance butterfly valve is applicable for higher pressure and temperature applications. Meanwhile, it has longer cycle life and better sealing ability.


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High Performance Butterfly Valve
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The high performance butterfly valve is designed with double eccentric or double offset structure. The valve has cast steel WCB body, stainless steel disc and stem along with RPTFE soft seat. Quick Detail Type Butterfly Valve Nominal Size 6 Inch Nominal Pressure Class 150 Structure Double Offset, Double Eccentric, Soft Seat Connection Type Lug Type Operation Gear Operated Design Code API 609 Face to Face ASME B16.10 End Connection ASME 16.5 Test & Inspection API 598 Body Material Cast Steel WCB Trim Material CF8M Disc, 17-4PH Stem, RPTFE Seat Application Water, Oil, Gas Dervos Inspection Report

150LB high performance double offset butterfly valve WAFER
150LB high performance double offset butterfly valve WAFER

The 3 inch 150LB butterfly valve has a double-offset disc design that allows the disc to move off the seat reducing running torque and seat wear. The Wafer type valve can be driven by a gearbox and handwheel or by electric, pneumatic or hydraulic actuator.

Double Eccentric Butterfly Valve
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The cast iron butterfly valve belongs to double offset type. It owns a compact body, low torque value, and perfect sealing function, suited for water application with normal temperature range. Quick Detail Type Butterfly Valve Nominal Size DN500 Nominal Pressure PN10 Structure Double Offset, Soft Seated Connection Type Flange Type Operation Gear Operated Design Code EN 593 Face to Face EN 558 End Connection EN 1092 Test & Inspection EN 12266 Body Material Cast Iron GGG50 Temperature Range -15℃~+150℃ Application Water, Oil, Gas Dimension Checking & Pressure Testing Tag & Packing

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

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 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

Stainless Steel Flanged Gate Valve
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Unidirectional Knife Gate Valve
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Retainerless Wafer Lug type Check Valve 6'' 900LB
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Stainless Steel CF8 Check Valve
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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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