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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.

PSB Globe Valve BW 1500LB
加载中...

Pressure Sealed Bonnet Globe Valve 6 Inch 1500LB BW

  • 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:

    Carbon Steel Globe Valve, Cast Steel Globe Valve
  • Method of Operation:

    Gearbox Operation Globe Valve
Inquiry now
Product Detail
The 6 Inch PSB globe valve has 1500LB design pressure, butt weld end, and gearbox. The full bore globe valve is made of carbon steel WCB body and trim 5 material.

Quick Detail

Type

Globe Valve

Size

6''

Design Pressure

Class 1500

Construction

Pressure Seal Bonnet, Plug Type Disc, Rising Stem

Connection Type

Butt Weld

Operation Type

Bevel Gearbox Opearted

Design Code

BS 1873

End to End

ASME B16.10

Connection End

ASME B16.25

Pressure & Temperature

ASME B16.34

Test & Inspection Standard

API 598

Body Material

Cast Steel WCB

Trim Material

Trim NO. 5

Temperature Range

-29~+425

Application

WOG

Origin

China


Material & Dimension

High Pressure Globe Valve Manufacturers


NPS          DN Class 2 2 1/2 3 4 6 8
50 65 80 100 150 200
L(RF)    L1(BW) 900LB 368 419 381 457 610 737
1500LB 368 419 470 546 705 832
2500LB 451 508 578 673 917 1022
L2(RTJ) 900LB 371 422 384 460 613 740
1500LB 371 422 473 549 711 841
2500LB 454 514 584 683 927 1038
H(Opne) 900LB 550 605 678 798 930 1230
1500LB 550 605 866 956 1260 1263
2500LB 560 720 755 1230 1791 2086
W 900LB 350 350 400 450 458 610*
1500LB 400 400 450 560 610* 610*
2500LB 400 450 560 310* 610* 760
Weight   (RF) 900LB 78 108 102 142 400 960
1500LB 85 110 135 230 660 1590
2500LB 140 168 247 620 1500 3200
Weight   (BW) 900LB 66 91 87 128 355 868
1500LB 77 101 122 209 595 1440
2500LB 100 118 180 438 1148 2594
*Manual gear operator is recommended


No Part Name Carbon steel to ASTM Alloy steel to ASTM Stainless steel to ASTM
WCB WC6 WC9  C5 CF8 CF8M CF3 CF3M
1 Body A216 WCB A217 WC6 A217 WC9 A217 C5 A351 CF8 A351 CF8M A351 CF3 A351 CF3M
2 Seat Ring A105 A182 F11 A182 F22 A182 F5 A182 F304 A182 F316 A182 F304L A182 F316L
3 Disc A105 A182 F11 A182 F22 A182 F5 A182 F304 A182 F316 A182 F304L A182 F316L
4 Stem A182 F6 A182 F304 A182 F304 A182 F316 A182 F304L A182 F316L
5 Disc nut A182 F6 A182 F304 A182 F304 A182 F316 A182 F304L A182 F316L
6 Cap SS Spiral Wound graphite or SS Spiral Wound PTFE
7 Body Seal Flexible Graphite+316
8 Adjustment Gasket F6 F6 F316
9 Stem packing Flexible Graphite+316
10 Gland Nut A194 2H A194 8
11 Gland Eyebolt A193 B7 A193 B8
12 Pin Carbon steel or Stainless Steel
13 Cap Nut Carbon steel or Stainless Steel
14 Gland A182 F6 A182 F304 A182 F316 A182 F304L A182 F316L
15 Gland Flange A216 WCB A351 CF8
16 Yoke A216 WCB A351 CF8
17 Stem Nut A439 D2 or B148-952A
18 Screw Carbon steel
19 Handwheel Ductile Iron or carbon steel
20 Name Plate Stainless steel or Aluminum
21 Washer Carbon steel
22 Nut Carbon steel or Stainless Steel

Related Knowledge

Why do we use pressure seal bonnet?


Pressure sealed bonnet are often used for valves with high design pressure. The higher the internal pressure gets, the greater the sealing force beween body and bonnet become.


For bolted bonnet valves, the body and bonnet are joined by studs and nuts with a gasket between the flange faces to facilitate sealing. However,as system pressure increases,the potential for leakage through the body and bonnet increases.

But for pressure sealed valve, “bonnet take-up bolts” to pull the bonnet up and seal against the pressure seal gasket. That is why when pressure increase, the performance of pressure seal gasket between body and bonnet becomes better.


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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.

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