English

English

Get a Quote
Products
  • Home
  • >
  • Plug Valve

  • >
  • 3'' 150LB API 6D Expanding Plug Valve DBB Non-Lubricated RF

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.

DBB Plug Valve
加载中...

3'' 150LB API 6D Expanding Plug Valve DBB Non-Lubricated RF

The 3 inch 150LB expanding plug valves are designed for applications in which positive shutoff, verifiable zero leakage, and double block-and-bleed capabilities are required.

  • 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:

    A216 WCB
  • Method of Operation:

    Handwheel
Inquiry now
Product Detail

Quick Detail

Type

Plug Valve

Nominal Diameter

3 Inch

NominalPressure

150 LB

Construction

DBB, Expanding Type, Non-Lubricated Type

Connection

RF

Design & Manufacture

API 6D

F toF Dimension

ASME B16.10

Test & Inspection 

API 6D

Body Material

A216 WCB

Disc Material

A216 WCB

Side Valve Material

Ductile Iron

O-ring

Teflon

Temp. Range

-29--150℃

Media

Corrosive


Features/Benefits

--Manufactured and tested to API 6D and ANSI B16.34 specifications

--Repairable on line

--Repeated positive shutoff

--Proved zero leakage

--Reduced wear on sealing surfaces


Technical Drawing

DBB Plug Valve


During Manufacturing

DBB Plug Valve


Packing

DBB Plug Valve


About Dervos

Xiamen Dervos Valves Industry Co.,Ltd (stock code 861601), founded in June 2008, is a one-stop industrial valves supplier integrated of R&D, manufacture, resource integration, and trade service. For 12 years, Dervos has been committed to finding solutions for industrial needs and providing professional service for both general and specialized valves.



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
1" 300LB Forged Steel Gate Valve LF2 API602

1" 300LB gate valve is made according to API 602 and ASME B16.34 standard. The valve body is made of A350-LF2. It has the structural characteristics of bolt cover, exposed rod, OS&Y, reduced diameter. Its connection mode is RF integral flange. And it has polished rod operation mode.

Forged Steel 3 Piece Trunnion mounted Ball Valve 600 LB API6D
Forged Steel 3 Piece Trunnion mounted Ball Valve 600 LB API6D

The API 6D ball valve is designed with trunnion mounted ball and full bore structure. The flanged ball valve has 600LB design pressure and 10 inch nominal size with gearbox operation mode, conforming to NACE MR0175 requirement.

BS 1868 Swing Type Check Valve
8 Inch Swing Check Valve 1500 LB WCB Flanged BB BS 1868

The 8 inch non return check valve conforms to BS 1868 design code, with bolted bonnet and swing type disc. The flanged check valve is made of carbon steel A216 WCB. Design Feature 1.BB: bolted bonnet 2.Swing type disc 3.Reduced bore design 4.Superior flow rates 5.Minimized friction loss 6.Standard trim material for selection 7.External or internal hinge pin available on request 8.Cylinder and counter weight available on request 9.Bare stem and actuators are available on request Quick Detail Type Check Valve Size 8'' Design Pressure ANSI 1500 Construction Bolted Bonnet, Swing Type Connection Raised Face Flange Design & Manufacture BS 1868 End to End ASME B16.10 Connection ASME B16.5 Pressure & Temp ASME B16.34 Test & Inspection API 598 Body Material Carbon Steel Applicable Temp -29℃~+400℃ Media W.O.G. Dimension Class 1500 NPS in 2 2 1/2 3 4 6 8 10 12 DN mm 50 65 80 100 150 200 250 300 L-L1 (RF-BW) in 14-1/2 16-1/2 18-1/2 21-1/2 27-3/4 32-3/4 39 44-1/2 mm 368 419 470 546 705 832 991 1130 L2 (RTJ) in 14-5/8 16-5/8 18-5/8 21-5/8 28 33-1/8 39-3/8 45-1/8 mm 371 422 473 549 700 841 1000 1146 H (OPEN) in 12-1/4 12-1/4 13 14 15-3/4 20-7/8 22-1/16 25-5/8 mm 310 310 330 355 400 530 560 650 WT (kg) RF 69 93 140 232 490 990 1490 1970 BW 49 74 111 185 375 803 1250 1625

Lift Check Valve
DN50 PN160 Spring Loaded Lift Check Valve Cast Steel

The DN50 PN160 spring loaded lift check valve, made of Cast Steel, is powered by flow and differential pressure with assistance from spring pressure. And it requests no human intervention is required to function, easy to use.

Wafer Check Valve
16" CL150 Dual Plate Wafer Check Valve CF8M API594

16" CL150 check valve is made according to API594 standard. The valve body is made of A351 CF8M. It has the structural characteristics of dual plate. Its connection mode is wafer.

1Inch Three-Piece Manual Ball Valve Full Bore
1Inch Three-Piece Manual Ball Valve Full Bore

Made of CF8M, the 2 PC valve is designed according to ASME B16.34. Mixed with 15 percent of fibreglass, the RPTFE seat of the valve is more eligible to bear high temperature and high corrosive working condition.

Ball Valve
8" 2500LB Trunnion Mounted Ball Valve API 6D RTJ F51

8" 2500LB ball valve is made according to API 6D standard. The valve body is made of F51. It has the structural characteristics of trunnion mounted ball, full bore. It also has the design of anti-fire, anti-static and anti-flying valve stem. In addition, it also meets NACE MR0175 requirements.

Angle Bellows Sealed Globe Valve
DN200 PN16 Angle Bellows Sealed Globe Valve RF 1.4408

DN200 PN16 angle bellows sealed globe valve is made according to BS EN 13709 standard. The valve body is made of EN 10213 1.4408. It has the structural characteristics of body cover bolt, exposed pole bracket, angle type, bellow seal. Its connection mode is RF. And it has hand wheel operation mode.

Lift Check Valve
Forged Steel Flanged Lift Check Valve 1 Inch 150LB

The forged steel lift check valve is designed with class 150 pressure and 1 inch nominal size according to standard API 602. We also call it as piston check valve. Quick Detail Type Check Valve Size 1'' DesignPressure 150LB Construction Lift Type, Piston Type Connection RF Flange Design & Manufacture API 602 End to End ASME B16.10 Connection ASME B16.5 Pressure & Temp ASME B16.34 Test & Inspection API 598 Body Material ASTM A105N Trim Material Trim 5 Temp Range -29℃~+425℃ Media W.O.G. Dimension Checking Pressure Tesing Packing

Butterfly Valve
4" 150LB Concentric Butterfly Valve WCB Lug API609 Lever

4" 150LB butterfly valve is made according to API 609 standard. The valve body is made of A216 WCB. It has the structural characteristics of center line. Its connection mode is lug (UNC threaded hole, RF 125-250AARH). And it has lever (locking device) operation mode.

Ball Valve
1-1/2" 150LB Lining Ball Valve FF CF8+PFA Lever GB/T12237-2007

1-1/2" 150LB ball valve is made according to GB/T12237-2007 standard. The valve body is made of CF8+PFA. It has the structural characteristics of fluorine lining. Its connection mode is FF. And it has Lever 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