The tilting disc check valve is a common type of valve used in pipeline systems to prevent reverse flow of the medium. It typically consists of components such as the valve body, disc, spring, and sealing gasket. The working principle of the tilting disc check valve is based on the design of the disc: the disc is positioned at an angle, allowing the medium to flow smoothly through the valve in the forward direction, while swiftly closing the valve in the event of reverse flow, thereby preventing backflow of the medium. One of the characteristics of the tilting disc check valve is its simple structure. Due to the fewer components and compact layout, manufacturing and maintenance are relatively easy. Additionally, the tilting disc check valve has the capability of quick closure. When there is a change in the flow direction of the medium, the disc promptly responds and closes the valve, effectively preventing backflow of the medium and maintaining the normal operation of the pipeline system. Another significant feature is its excellent sealing performance. The tilting disc check valve employs devices such as springs to assist in closing the disc, ensuring effective sealing of the valve in the closed position, thus preventing medium leakage and safeguarding the safe operation of the pipeline system. Furthermore, tilting disc check valves are typically manufactured using corrosion-resistant materials, enabling them to operate stably in corrosive media over the long term. Another notable feature of the tilting disc check valve is its wide range of applications. It is suitable for various media, including liquids, gases, and steam, and is widely used in industries such as water supply, drainage, chemical, and petroleum. Whether in low-pressure systems or high-pressure systems, tilting disc check valves can reliably prevent medium backflow, protecting the safety operation of pipelines and equipment. In summary, the tilting disc check valve plays a crucial role in pipeline systems due to its characteristics of simple structure, rapid closure, excellent sealing performance, corrosion resistance, and wide applicability. When designing and selecting valves, considering factors such as the working pressure of the pipeline system, characteristics of the medium, and operating environment, choosing the appropriate tilting disc check valve can effectively enhance the safety and stability of the pipeline system.
The installation requirements of fully welded ball valves in underground pipelines are crucial, as the unique characteristics of the underground environment pose higher demands on the performance and safety of the valves. Proper installation not only ensures the normal operation of the valves but also prolongs their service life and enhances the safety and reliability of the pipeline system. The following are the specific requirements for installing fully welded ball valves in underground pipelines: 1. Selecting the appropriate valve type When installing fully welded ball valves in underground pipelines, it is necessary to choose the appropriate valve type based on the operating conditions and fluid characteristics of the pipeline system. Fully welded ball valves, with advantages such as simple structure and reliable sealing, are suitable for high-pressure, high-temperature, and corrosive fluid applications in pipeline systems. 2. Underground burial depth consideration When installing fully welded ball valves, it is imperative to consider the depth of underground burial. Typically, the burial depth of underground pipelines should comply with relevant standards and specifications to ensure the valves are positioned securely while facilitating maintenance and operation. 3. Corrosion protection measures The dampness of the underground environment and the presence of chemicals in the soil can lead to corrosion and damage to valves. Therefore, when installing fully welded ball valves, it is necessary to implement appropriate corrosion protection measures. This includes selecting valves manufactured from corrosion-resistant materials and applying corrosion-resistant coatings to the valves to extend their service life. 4. Sealing performance requirements Fully welded ball valves in underground pipeline systems must possess excellent sealing performance to prevent fluid leakage and contamination of groundwater sources. During installation, it is imperative to ensure that the valve's sealing components are intact and properly installed to ensure that the sealing performance meets design requirements. 5. Consideration of groundwater level fluctuations Fluctuations in groundwater levels may affect the operational status and safety of fully welded ball valves. When selecting installation locations, it is essential to consider the range of groundwater level fluctuations and implement corresponding waterproofing measures to prevent groundwater from affecting the valves. 6. Regular inspection and maintenance The underground environment has a significant impact on fully welded ball valves; therefore, regular inspection and maintenance of the valves are essential. Inspection tasks include assessing the sealing performance of the valves, checking the condition of moving parts, evaluating the effectiveness of corrosion protection measures, and promptly addressing any issues to ensure the safe operation of the valves. When installing fully welded ball valves in unde...
We are delighted to announce that our company is on the brink of a new beginning - the acquisition of a new office space. This marks a fresh start for our company's development, and we eagerly anticipate crafting a brighter future in this new environment. The selected location enjoys excellent geographic positioning, convenient transportation, and a pleasant environment. The choice of our new office space has been meticulously considered, aiming to provide our employees with a spacious and comfortable working environment while offering ample support and motivation for the company's development. Starting from April 15, 2024, our office address will be changed to: [Unit 3104, Channel Pearl Plaza, No.99 Yilan Road, Siming District, 361008, Xiamen City, Fujian Province, China]。This relocation is not only a natural choice for the continued development of our company, but also a testament to our confidence and aspirations for the future. The utilization of the new premises will further enhance internal collaboration and communication within the company, ignite the creativity and vitality of our team, and elevate our efficiency and service standards. We aim to deliver even higher-quality products and services to our customers and partners as a result. Finally, we would like to express our heartfelt gratitude for your long-standing support and trust in our company. We believe that this new beginning will bring forth fresh hope and opportunities. We will continue to uphold the principle of 'Customer First, Innovative Development', striving for excellence and working towards our long-term corporate goals. Let us join hands and work together to create a brighter future.
8" 1500LB gate valve is made according to ASME B16.34 standard. The valve body is made of WCC. It has the structural characteristics of pressure self sealing, elastic gate and structural length of 711mm. The working principle of self sealing valve is mainly to use wedge sealing surface to seal under pressure.
Payment:
30% when order confirmed, 70% before shipmentProduct Origin:
ChinaColor:
CustomizationShipping Port:
Shanghai, ChinaLead Time:
30~60 days Ex Works after order confirmationMaterial:
ASTM A216 WCCProduct Description
|
Type |
Gate Valve |
|
Size |
8" |
|
Pressure |
1500LB |
|
Construction |
PSB |
|
Connection |
BW (SCH160) |
|
Body Material |
ASTM A216 WCC |
|
Design Norm |
ASME B16.34 |
|
End to End Dimension |
ANSI B16.10 |
|
BW Dimension |
ANSI B16.25 |
|
Test & Inspection Code |
API 598 |
|
Applicable Medium |
Water, Oil and Gas |
Features
1. Within the working pressure range, the greater pressure the valve face, the better sealing performance it has;
2. The sealing structure and sealing material can be selected according to different working conditions and preload requirements.
Technical Drawing
Dimension Checking
Pressure Testing
Nameplate & Packing
Inspection report
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 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
The high-pressure Class 4500 gate valve is designed with PSB and SW end connection. Made of CS A105, the 2 inch gate valve follows the inspection standard API 598 and design standard API 602. Dervos could offer customizing service by providing clients with valves in different sizes, materials, standards, design pressure, structure, operation type and connection type.
10'' 1500LB gate valve is made according to ASME B16.34 standard. The valve body is made of WCC. It has the structural characteristics of pressure self sealing, rising stem, elastic wedge and structural length of 864mm. Both ends of the valve stem are threaded. It has BW connection type.
The concentric lever operated butterfly valve is made of cast iron GG25, SS420 stem, and EPDM seat. The DN200 wafer butterfly valve is applicable for water. Quick Detail Type Butterfly Valve Nominal Size DN200 Nominal Pressure PN10 Structure Concentric Type, EPDM Soft Seated Connection Type Wafer Type Operation Lever Operated Design Code EN 593 Face to Face EN 558 End Connection EN 1092 Test & Inspection EN 12266 Body Material Cast Iron GG25 Temperature Range -15℃~+150℃ Application Water, Oil, Gas Available Modifications for Butterfly Valves -Valve Nominal Pressure -Valve Nominal Size -Concentric Type and Eccentric Type -Soft Seat, Multi-Layer Metal Seat, Fully Metal Seat -Body & Trim Material -End Connection (Double Flanged,Wafer, Lug) -Available Operation (Bare Stem, Electric Actuator, Pneumatic Actuator, Lever or Wrench) -Customised Coating -Customised Packaging Product Application Oil & Gas Industry Dervos valves are fully involved in refining, oil and gas industries to handle very tough working environments. Petrochemical Industry We could also provide all kinds of valves in various materials, like stainless steel, Monel, titanium, and hastelloy to meet requirements of chemical industry. Power Station Industry Dervos could provide valves suitable for power station use with high pressure and temperature requirements.
This 20 inch butterfly valve is plastic lined type one. Its PFA lined disc and its PTFE seat ring enable it a excellent corrosion resistant performance. With a gearbox, it is easy to drive.
The 8 inch 150 LB dual disc non return check valve, designed per API 594, has dual plate and lug connection. The retainerless dual plate check valve is made of duplex stainless steel 4A as its body and trim material. Quick Detail Type Check Valve Size 8'' DesignPressure Class 150 Construction Dual Plate Type, Retainerless Connection Lug Type Design & Manufacture API 594 End to End ASME B16.10 Connection ASME B16.5 Pressure & Temp ASME B16.34 Test & Inspection API 598 Body Material Duplex Stainless Steel 4A Trim Material Duplex Stainless Steel Media W.O.G. Design Feature 1.Shor face to face dimension 2.Small in size with light weight 3.Swift close of disc with small water hammer 4.Vertically or horizontally installed 5.Smooth flow passway with small flow resistance 6.Long cycle life and high reliability
The 12 inch 600LB trunnion mounted ball valve has gearbox, RTJ flange, fire safe design per API 607. The 3 piece ball valve is designed per API 6D. Design Feature & Benefit 1.Small flow resistance means less pressure drop 2.Simple valve structure and light weight 3.Diversified sealing material available, from metal material TCC, satellite, stainless steel to soft material PTFE, Teflon, Nylon, Peek and etc 4.Good performance of both metallic sealing and soft sealing 5.Convenient and swift operation of the valve 6.Easy to maintain due to renewable seat ring 7.When fully opened or closed, the valve sealing face is isolated from medium corrosion. 8.Wide range of application in terms of size and pressure rating Quick Detail Type Ball Valve Size 12" Pressure Class 600 Construction Trunnion Mounted Ball, Three-Piece Type, Side Entry Connection RF Flange Operation Gear Operated Body Material ASTM A105 Design & Manufacture API 6D Pressure & Temp ASME B16.34 Face to Face ASME B16.10 End Connection ASME B16.5 Test & Inspection Code API 598 Fire Safe API 607 Temperature Range -29℃~+200℃ Medium Water, Oil and Gas Origin China Material Specification No Part Name Carbon steel to ASTM Stainless Steel to ASTM WCB LCB CF8 CF8M CF3 CF3M 1 Underplate WCB LCB CF8 CF8M CF3 CF3M 2 Underplate Bolt A193 B7 A320 L7 A193 B8 3 Trunnion A182 F6 A182 F6 A182 F304 A182 F316 A182 F304L A182 F316L 4 Body A216 WCB A352 LCB A351 CF8 A351 CF8M A351 CF3 A351 CF3M 5 Bonnet Nut A194 2H A194 4 A194 8 6 Bonnet Bolt A193 B7 A320 L7 A193 B8 7 Cap A216 WCB A352 LCB A351 CF8 A351 CF8M A351 CF3 A351 CF3M 8 Gasket SS Spiral Wound/graphite or SS Spiral Wound/PTFE 9 Shaft Sleeve SS/graphite 10 Seat Ring RPTFE or POM 11 Ball A105/Ep.Cr or F6 A182 F6 A351 CF8 A351 CF8M A351 CF3 A351 CF3M 12 Seat A105/Ep.Cr or F6 A182 F6 A182 F304 A182 F316 A182 F304L A182 F316L 13 Spring 17-17PH(inconel for NACE)Ni-cr Alloy 14 O-Ring Viton 15 Stem A182 F6 A182 F6 A182 F304 A182 F316 A182 F304L A182 F316L 16 Sealing Cover A182 F6 A182 F6 A182 F304 A182 F316 A182 F304L A182 F316L 17 O-Ring Viton 18 Gear Actuator The material is according to ASTM standard Related Knowledge What is difference between floating and trunnion ball valve? The ball part of floating ball valve is movable. Under the pressure of medium, the ball has a certain displacement and presses on the sealing surface of outlet end to ensure its tight sealing. The floating structure is suitable for ball valve with small size and low & medium pressure rating. The ball part of trunnion mounted ball valve is fixed. Under the medium pressure, the floating seat will move towards the ball to ensure the sealing. The trunnion mounted ball valve is often with larger size and higher pressure.
10" 300LB gate valve is made according to API 600 standard. The valve body is made of ASTM A217 C5. It has the structural characteristics of bolt cover, elastic gate, rising stem, OS&Y, full bore and body valve seat. Its connection mode is RF (125~250AARH). And it has bevel gear operation mode.
The 6 inch 150 LB single disc wafer check valve, designed per API 594, has one disc and wafer connection. It will have the best performance under -29 to 350 Celsius degree.
DN25 PN100 Forged Steel A105 NPT Connection Way 2 Pieces Construction Full Pore Lever Operation Floating Ball Fire Safety Body and Bonnet A105 Ball a182 F304 Seat Ring PTFE Stem A182 F304 Stem O Ring Viton Packing Graphite Gland Stainless Steel Design and Manufacture ASME B16.34 Face to Face Design Manufacture Standard Manufacture Standard Screw and Dimension ANSI B1.20.1 Inspection and Test API598 Fire Safety Design API 607 Quick Detail Type Ball Valve Size DN25 Pressure PN100 Construction 2 Pieces Connection NPT Operation Mode Lever Body Material A105 Cover A105 Design & Manufacture ASME B16.34 End to End ASME B16.10 End Connection ANSI B1.20.1 Inspection API 598 Temperature Range -29℃~+538℃ Medium Oil, Water, Gas
The 1 inch 2500 LB high pressure forged steel gate valve features in solid wedge, reduced port, bolted bonnet, handwheel, rising stem and female thread ( FNPT). The forged valves comply with API 602 and API 598. Quick Detail Type Gate Valve Size 1'' Pressure Class 2500 Construction BB, Rising Stem, OS&Y, Solid Wedge Connection Thread Connection Operation Handwheel Operated Body Material ASTM A105 TrimMaterial 13CR+STL Design API 602 End to End ASTM B16.10 Pressure & Temp ASTM B16.34 Connection End ASTM B1.20.1 Temperature Range -29℃~+425℃ Medium WOG Origin China Product Range Body material: Carbon Steel, Stainless Steel, Alloy Steel, Low Temperature Steel Normal diameter: 1/2’’~4’’ End connection: BW, SW, Flange, Threaded Pressure range: 150lbs~2500lbs (PN16~PN420) Operation: Handwheel, Bare Stem, With Actuators Working temperature: -46℃~ +425℃ How do we control quality during the manufacturing process? Casting Inspection: Check the appearance, wall thickness, quantity, size and original material report etc. Must repair it meet MSS SP 55 before machining if unqualified. Machining supervision: Supervise the production process and find potential problems to avoid wrong production or wrong production design by randomly visiting the factory and checking the manufacturing process.
48" CL150 butterfly valve is made according to API 609 standard. The valve body is made of ASTM A351 CF8M. It has the structural characteristics of triple eccentricity. Its connection mode is lug to ASME B16.47B. And it has smooth rod with flange connection plate operation mode.
Copyright © 2015-2024 DERVOS VALVE CO.,LTD.All Rights Reserved Blog / Sitemap / XML / Privacy Policy
