English

English

Get a Quote
Products

Hot Products

Company News

Specific Requirements for Installing Fully Welded Ball Valves in Underground Pipelines
Specific Requirements for Installing Fully Welded Ball Valves in Underground Pipelines
2024-04-29

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...

Embarking on a New Chapter: DERVOS Relocates to Channel Pearl Plaza
Embarking on a New Chapter: DERVOS Relocates to Channel Pearl Plaza
2024-04-26

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.

The Important Functions of Steam Trap Valves
The Important Functions of Steam Trap Valves
2024-04-17

A steam trap valve is a device designed on devices that require steam, which can automatically discharge condensate, air, and non condensable gases from the steam system and prevent steam from being discharged. Important Functions (1) Able to quickly remove condensate generated; (2) Prevent steam leakage; (3) Remove air and other non condensable gases. The necessity of using steam equipment to remove condensate and air: (1) Prevent water hammer: If there is condensate in the steam pipeline, it will be strongly impacted by the high-speed flowing steam on the pipe wall, valves, and steam equipment, causing damage or damage to the pipeline bends, valves, and steam equipment. (2) To prevent a decrease in the efficiency of steam using equipment: Steam using equipment (especially indirect heating devices) is aimed at effectively utilizing the latent heat of steam. Excessive condensate trapped in these devices comes into contact with the heating surface, reducing the heating area and uneven heating up and down, resulting in a significant decrease in equipment efficiency. (3) Prevent corrosion of steam inside equipment: Oxygen in water and air coming into contact with the equipment can cause chemical reactions, leading to rust corrosion. (4) Prevent damage to steam using equipment: Due to the different temperatures of steam and water, the condensed water inside the equipment generates temperature differences locally, causing temperature difference stress and equipment damage. Specific requirements for steam trap valves: (1) No steam leakage during the discharge of condensate; (2) It can eliminate all condensed water from any part of the steam system; (3) Capable of simultaneously discharging air and condensate; (4) Suitable for a wide range of pressures; (5) Easy to repair and maintain: simple structure with few moving parts; (6) High practicality: small size, light weight, long lifespan, low price, and no loss of emission capacity due to air and steam.

Pressure Seal Bonnet Gate Valve
加载中...

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


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.

Related Products
Gate Valve
8" 1500LB Pressure Self Sealing Gate Valve WCC BW

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.

Gate Valve
Pressure Seal Gate Valve 2 Inch 4500 LB SW API 602

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.

Gate Valve
Pressure Seal Gate Valve 10'' 1500LB WCC BW PSB

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.

3 piece ball valve gear operator A105 4 inch 150LB
3 piece ball valve gear operator A105 4 inch 150LB

The 4 inch 150LB ball valve is a 3-piece one with reduced port, A105 body, F6A stem, ball and seat. The The valve is made as per API6D and is tested under API 598.

Plug Valve
API 6D Inverted Plug Valve LCB 8 Inch 600 LB Gearbox

The 8 inch plug valve is designed per API 6D with Class 150 RF flange and gearbox operation. The inverted plug valve is made of LCB. Dervos could offer customizing service by providing clients with valves in different sizes, materials, standards, design pressure, structure, operation type and connection type. Quick Detail Type Plug Valve Size 8'' Design Pressure 600LB Construction Inverted Type, Lubricated Type, Pressure Balanced Connection RF Flange Operation Gearbox Design Code API 6D Face to Face ANSI B16.10 End Connection ANSI B16.5 Test & Inspection API 598 Body Material LCB Temperature Range -46℃~+425℃ Application Water, Oil and Gas   Dimension

Swing Check Valve
12" 600LB Swing Check Valve RF WCB API6D

12" 600LB swing check valve is made according to API 6D standard. The valve body is made of ASTM A216 WCB. It has the structural characteristics of swing type and external latch. Its connection mode is RF.

1 1/2 inch CL1500 Pressure Seal Globe Valve SW
1 1/2 inch CL1500 Pressure Seal Globe Valve SW

The 1 1/2inch 1500LBglobe valve,made of A105N are best suited for throttling application at high pressure and temperature.

Wafer Check Valve
API594 3" 150LB Dual Plate Wafer Check Valve API598 LCC

3" 150LB wafer check valve is made according to API594 standard. The valve body is made of A352 LCC + 316. It has the structural characteristics of double plate and built-in type. Its connection mode is wafer type.

Wafer Check Valve
10" 150LB Dual Plate Wafer Lug Type Check Valve WCB API594

10" 150LB wafer check valve is made according to API 594 standard. The valve body is made of A216 WCB+316. It has the structural characteristics of double disc and wafer type. Its connection mode is Lug.

Y Pattern Globe Valve
3/4 Inch 1500LB Y Pattern Globe Valve SW Handwheel API602

Quick Detail Type Globe Valve Designed Size 3/4 Inch Designed Pressure 1500LB Construction Y Type; Bolted Bonnet; Connection Type Socked Weld Operation Handwheel Design Code API602 Connection ANSI B16.11 Test & Inspection  API598 Body Material A182 F11+STL Trim Material A276-410+STL Application Water, Oil, Gas Features · Low pressure drop. · Low torque stroking · Quick and easy repair in line. · Tight shutoff. · Stem expansion/contraction thrust unit for high temperature application (optional). · Other sizes available on request. · Live-loading of packing optional.    Technical Drawing Dimension Check Witnessing Tests Packing Product Application Dervos valves can be widely used in varieties of industries, such as petrochemical,pipeline,oil & gas,marine,water treatment,power station industries and etc.

Strainer
API598 6" 150LB Y Type Strainer RF C95800 ASME B16.34

6" 150LB Y type strainer is made according to ASME B16.34 standard. The valve body is made of ASTM B148 C95800. It has the structural characteristics of bonnet with 1/2 "FNPT plug. Its connection mode is RF.

Ball Valve
DN100 PN25 3-Way Floating Ball Valve RF CF8M ISO17292

DN100 PN25 ball valve is made according to ISO 17292 standard. The valve body is made of A351-CF8M. It has the structural characteristics of T-shaped, floating ball, anti-fire, anti-static, anti-flying valve stem, bi-directional. Its connection mode is RF. And it has lever with dial operation mode.

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.

Home

Products

about

contact