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.
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.
DN50 PN40 globe valve is made according to BS EN 13709 standard. The valve body is made of EN 10213 1.0619. It has the structural characteristics of bolt cover and straight through type. Its connection mode is EN1092-1 B. And it has hand wheel operation mode.
Payment:
30% when order confirmed, 70% before shipmentProduct Origin:
ChinaColor:
CustomizationShipping Port:
Shanghai, ChinaLead Time:
30~60 days Ex Works after order confirmationMaterial:
EN 10213 1.0619Method of Operation:
Hand WheelProduct Description
|
Type |
Globe Valve |
|
Size |
DN50 |
|
Pressure |
PN40 |
|
Connection |
EN1092-1 B |
|
Operation |
Hand Wheel |
|
Body Material |
EN 10213 1.0619 |
|
Design Norm |
BS EN 13709 |
|
Face to Face Dimensions |
BS EN 558-1 S.1 |
|
Flange Ends Dimensions |
BS EN 1092-B1 |
|
Test & Inspection Code |
BS EN 12266 |
|
Applicable Medium |
Water, Oil and Gas |
Features
1. Widely used due to its high stability and good sealing performance;
2. Reasonable structure, excellent performance, and beautiful appearance.
Technical Drawing
Dimension Checking
Pressure Testing
Nameplate & Packing
Inspection report
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The PN16 DN50 stainless steel flanged globe valve has straight pattern structure, bolted bonnet and handwheel operation. The OS&Y globe valve is designed as per DIN 3356. Quick Detail Type Globe Valve Norminal Size DN50 NorminalPressure PN16 Construction BB, Rising Stem, Plug Disc, Integral Seat ConnectionType Flange OperationType Gearbox Design Code DIN 3356 Face to Face DIN 3202 Flange End DIN 2543 Test & Inspection DIN 3230 Body Material Stainless Steel TrimMaterial Stainless Steel Temperature Range -196℃~+800℃ Medium Water, Oil and Gas Origin China Design Feature 1.Straight pattern body structure 2.OS&Y, Rising Stem 3.Bolted Bonnet 4.Available with bevel gear operation 5.Plug type disc 6.Little abrasion on sealing face during valve operation 7.Smaller installation space required Dervos Main Product Range With a complete product range, Dervos product lists cover gate, globe, check, ball, butterfly, check, plug valve and strainers. We can also provide marine valve, pressure reducing valve, control globe valve, wellhead valve and so on
The 12 inch 150 LB cast steel globe valve is made of carbon steel WCB body and trim 8, with gearbox, RF flange, BB, and plug disc. Quick Detail Type Globe Valve Size 12'' Pressure Class 150 Construction Bolted Bonnet, Straight Pattern,Plug Disc, OS&Y Connection Flanged Connection Operation GearOperated Design Code BS 1873 Face to Face ASME B16.10 Flange Connection ASME B16.5 Pressure & Temp ASME B16.34 Test & Inspection API 598 Body Material A216 WCB TrimMaterial Trim 8 Temperature Range -29℃~+427℃ Application WOG Origin China Dimension Class 150 NPS in 2 2 1/2 3 4 5 6 8 10 12 DN mm 50 65 80 100 125 150 200 250 300 L-L1 (RF-BW) in 8 8-1/2 9-1/2 11-1/2 14 16 19-1/2 24-1/2 27-1/2 mm 203 216 241 292 256 406 495 622 698 L2 (RTJ) in 8-1/2 9 10 12 14-1/2 16-1/2 20 25 28 mm 216 229 254 305 368 419 508 635 711 L3 mm 102 108 121 146 178 203 248 311 349 H (OPEN) in 14-11/16 15-3/8 16-9/16 20-1/4 21-3/16 22-5/15 24-5/8 28 39 mm 373 390 421 515 538 567 626 712 990 W in 7-7/8 9-7/8 9-7/8 11-13/16 11-13/16 13-3/4 15-3/4 17-3/4 24 mm 200 250 250 300 300 350 400 450 610 WT (kg) RF 22 29 42 64 77 105 154 288 507 BW 19 25 34 49 65 82 131 249 430 Related Knowledge What is the difference between a gate valve and a globe valve? Gate valves and globe valves are two of the most common valves we know. The differences beween them are: 1.Gate valve is used only for on-off function. But the globe valve could be used for shutting off and throttling at the same time. 2.The flow resistance of a globe valve is larger than a gate valve. Likewise, globe valves have more pressure drop than gate valves. 3.The gate valve require larger installation space than a globe valve from the perspective of opening height. 4.The gate valve sealing face suffers more abrasion than a globe valve. 5.The torque value of a globe valve is larger than a gate valve. Quality Checking Quality means everything in Dervos. Quality checking team will do inspections according to standard procedure and provide reports. Our QC team will check valve quality from casting and forging, machining, pressure testing, dimension checking, painting & packing.
The 2 inch 1500LB globe valve, made of ASTM216 WCB, is designed as per BS 1873. It is operated by a handwheel and is connected with pipeline by RTJ. The body and the disc of the globe valve contain 13Cr, therefore this valve enjoys a better ability to resist corrosion. Quick Detail Type Globe Valve Nominal Diameter 2 Inch NominalPressure 1500LB Construction Bolted Bonnet Connection RTJ Operation Handwheel Design & Manufacture BS 1873 End to End ASME B16.10 Flange End Dimension ASME B16.5 Test & Inspection API 598 Temperature Range -29℃~+425℃ Body Material ASTM A216 WCB +13Cr Disc Material ASTM A105 WCB +13Cr Media W.O.G. Dervos Quality Checking System In Dervos, we control quality throughout the whole manufacturing process. Casting inspection: We can find out the problem of raw material, such as shoddy casting, unqualified wall thickness, chemical composition and so on, which ensure that you will not be cheated. Machining Inspection: On the one hand, we could ensure machining accuracy through this process. On the other hand, we could find out machining mistake as early as possible, to win more time for repairing and remaking Final Inspection: Final inspection activities include document and QC record review, visual examination, dimension check, pressure test, painting and packing check. You don’t need to come and inspect in person and all the documents could be provided as proof.
The cast steel globe valve is designed as per BS1873. With Body Bonnet, outside screw and yoke, handwheel, the 8 inch valve, the valve is suitable for common work condition.
The 1-1/2 inch globe valve, designed as per API 623, has a bomb-shaped body and a parabolic plug both of which optimize the smooth flow of the media. The valve is made of stainless steel and is equipped with a handwheel, easy to operate and maintain.
Globe valve with a non-return design, preventing reverse flow when in the open position, also suitable for isolation duty. Manually operated, supplied with a handwheel.
The 6 inch 600LB globe valve, made of ASTM216 WCB, is designed as per API623. It is operated by a handwheel and is connected with pipeline by RF. The disc of the globe valve contain 13Cr, therefore this valve enjoys a better ability to resist corrosion.
EN 13709 Design and manufacture. EN558-1 Face to Face dimension. EN1092-B1 Flange and dimension. EN12266 Test and inspection standard.
Quick Detail Type Globe Valve Nominal Size NPS 2 NominalPressure Class 300 Construction BB, Rising Stem, Integral Seat Connection Type Flange Operation Type Handwheel Design Code BS1873 Face to Face ASME B16.10 Flange End ASME B16.5 Test & Inspection API 598 Body Material WCB+STL Trim Material F316+STL Temperature Range -29℃~425℃ Medium Water, Oil and Gas Origin China Design Feature 1. Straight pattern body structure 2. OS&Y, Rising Stem 3. Bolted Bonnet 4. Available with bevel gear operation 5. Plug type disc 6. Little abrasion on sealing face during valve operation 7. Smaller installation space required Technical Drawing Dimension Check Witnessing Tests Packing Our Service Dervos customer service is one of our biggest competitive advantages. In Dervos, we provide- 1.Quotation within 24 hours or no later than 3 days This will let you meet the quotation submission deadline and enhance your working efficiency 2.Weekly status report of your order In this way, you will have a clear picture of your order. You do not need to waste time on pushing us for status update 3.An 18-month warranty period A warranty certificate will issued after shipment and you will not have any concern after buying valves. 4.Solutions to complaints within 3 days Quick and responsible actions to complaints will protect your reputation and reduce the financial loss as much as possible. Certificates Dervos could provide reports upon clients’requests, such as ISO 9001, PED CE, EAC, API 607, API 6D, API 6A and etc.
6" 300LB globe valve is made according to BS1873 standard. The valve body is made of WCB. It has the structural characteristics of straight through, bolt cover, parabolic disc, standard flow, body valve seat. Its connection mode is BW. And it has handwheel operation mode.
3" 600LB globe valve is made according to BS1873 standard. The valve body is made of ASTM A351 CF8+STL. It has the structural characteristics of bolt cover and straight through type. Its connection mode is RTJ. And it has hand wheel operation mode.
2" 150LB globe valve is made according to BS1873 standard. The valve body is made of A216 WCB. It has the structural characteristics of bolt cover, rising stem, OS&Y and body valve seat. Its connection mode is RF. And it has hand wheel operation mode.
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