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.
DN800 PN10 gate valve is made according to DIN standard. The valve body is made of GGG50. It has the structural characteristics of F4 drinking water soft gate. Its connection mode is RF, and it has gear operation.
Payment:
30% when order confirmed, 70% before shipmentProduct Origin:
ChinaColor:
CustomizationShipping Port:
Shanghai, ChinaLead Time:
30~60 days Ex Works after order confirmationMaterial:
GGG50Method of Operation:
G.O.Product Description
|
Type |
Gate Valve |
|
Size |
DN800 |
|
Pressure |
PN10 |
|
Connection |
RF |
|
Operation |
G.O. |
|
Body Material |
GGG50 |
|
Wedge |
GGG50/BS2494 |
|
Stem |
SS420 |
|
Design Norm |
DIN |
|
Applicable Medium |
Water, Oil and Gas |
Features
1. Low flow resistance, high height, and long opening and closing time.
2. Low flow resistance, effortless opening and closing, and less prone to water hammer phenomenon.
Technical Drawing
Dimension Checking
Pressure Testing
Painting
Nameplate & Packing
Inspection report
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The DN80 PN16 cast iron gate valve has face to face dimension as per DIN3202 F4 or DIN3202 F5. This GG25 gate valve is designed with resilient seat, non rising stem, bb, RF flange, suitable for water treatment application. Quick Detail Type Gate Valve Nominal Diameter DN 80 Nominal Pressure PN 16 ConstructionType Non-rising stem, Bolted Bonnet, Resilient Seat ConnectionType Flanged OperationType Handwheel Operation Body Material Cast Iron GG25 TrimMaterial Cast Iron Wedge, SS420 Stem, EPDM Seat Design Code DIN 3352 End to End Code DIN 3202 Flange Dimesion DIN 2501 Medium Water Origin China Design Feature 1.Resilient seat for good sealing performance 2.Low flow resistance and small pressure drop 3.Non-rising stem for installation space is limited 4.No limitation for flow direction of medium 5.Epoxy painting available for internal and external part of the valve for anti corrosive function Company Brief Introduction Specializing in valve industry over 10 years, Dervos becomes the leading vendor of gate, globe, check, ball, butterfly, plug valves and strainers. We serve oil and gas user such as LUKOIL, MOL, YPF with local partners. Dervos show its advantages in: 1. Our partnerships with tens of stable suppliers allow us to provide customers with a wide range of high-quality products at a competitive price. 2. Each order is under strict quality control with inspection reports before delivery. 3. We value delivery time as much as our customers do. With the powerful purchasing system, we follow each order closely to secure on-time delivery. 4. One-stop solutions will be offered in a timely manner
The ductile iron gate valve has GGG50 body material and EPDM soft seat. The valve is designed with non-rising stem, RF connection and manual operation, used in fire water. Quick Detail Type Gate Valve Size DN300, DN400 Design Pressure PN10 Construction Non-rising Stem, Soft Seat ConnectionType Flange OperationType Handwheel Operation Body Material GGG50 TrimMaterial Stem 2Cr13, EPDM Seat Medium Water Origin China Hydrostatic Pressure Test Dimension Checking Packing
The gate valve is made of ductile iron GGG50 . The valves disc is rubber-packed to get excellent sealing effect by the rubber's resilient deformation. Non-rising resilient seated gate valves solve the problem in general gate valves such as leakage, rusting etc. And it also saves space.
The swing check valve is made of A216, a kind of WCB. Manufactured according to BS1868, the check valve is 6 inch and 150LB. And the valve is capable in working temperature between -19 to 425 degree Celsius.
DN1350 4 Bar butterfly valve is made according to API 609 standard. The valve body is made of GGG40. It has the structural characteristics of midline type. Its connection mode is flange connection according to AWWA C207 Class D. And it has gearbox operation mode.
10’’ 300LB gate valve is made according to API 600 standard. The valve body is made of ASTM A217 C5 + STL. It has the structural characteristics of rising stem and bolt cover. The gate valve connected by flange has the operation mode of hand wheel.
The electric control valve is made of carbon steel WCB designed for precise flow control and regulating. Dervos have many suppliers of different control valve types. Quick Detail Type Globe Control Valve Size DN 200 DesignPressure PN 40 ConnectionType RF Flange Design Code ASME B16.34 End Connection ASME B16.5 Face to Face ASME B16.10 Test & Inspection API 598 Body Material A216 WCB TrimMaterial Stainless Steel Application Water, Oil, Gas Company Profile Founded in 2008, DERVOS VALVES INDUSTRY CO., LTD is a professional vendor, exporter and supplier of industrial valves, pipes and fittings. Dervos has expanded its business to five continents around the world, including Europe, Oceania, Africa, America and Asia. Our commitment is to find the most suitable products for our clients in an efficient way. We adopt modern management skills to make sure efficiency in production and selling system. How we handle complaints When complaints come, how do we handle them? We will reply within 24 hours and ask more proof from clients. Then we discuss with QC and factories to identify the reason. In the third day, we will provide a solution to clients.
2" 300LB ball valve is made according to API 6D standard. The valve body is made of A216 WCB. It has the structural characteristics of full bore, floating ball, anti-fire, anti-static, and anti-flying valve stem design. Its connection mode is RF. And it has lever operation mode.
DN80 PN100 ball valve is made according to API 6D standard. The valve body is made of ASTM A105. It has the structural characteristics of fixed ball, full bore, anti-fire, anti-static, and anti-flying valve stem. Its connection mode is EN1092-1 D. And it has lever operation mode.
6" 300LB globe valve is made according to API 623 standard. The valve body is made of ASTM A352 LCB. It has the structural characteristics of bolted cover, rising stem, OS&Y, parabolic disc, replaceable valve seat and structural length of 680mm. Its connection mode is RF. And it has handwheel operation mode.
The basket type strainer has 150LB design pressure and 1 1/2 inch size. The flanged strainer is made of LCC body and stainless steel screen. Quick Detail Type Strainer Size 1.5'' DesignPressure 150LB Construction Bolted Bonnet, Basket Type ConnectionType Flanged Design Code ASME B16.34 Face to Face ASME B16.10 End Connection ASME B16.5 Pressure & Temp ASME B16.34 Test & Inspection API 598 Body Material ASTM A352 LCC ScreenMaterial SS304 TemperatureRange -46℃~+345℃ Application Water, Oil, Gas Company Profile Founded in Xiamen in 2008, DERVOS VALVES INDUSTRY CO., LTD has accumulated rich experience in supplying and exporting industrial valves, from general types of gate valve, globe valve, check valve, ball valve, butterfly valve, plug valve, strainer to special valves like needle valve, control valve, relief valve, safety valve and steam trap. Dervos people are committed to provide our customers with best possible service and valve products at a competitive price. With over 500 valve suppliers, the rich resources we own enable us to find the most suitable products in a very short time for our customers. Purchasing System Dervos purchasing system plays an important role in order follow up and supplier management. What does our purchasing team do? -Confirm production plan with the factory -Follow up the order according to the production plan very closely -Take every measure to initiate all related resources to solve the delay crisis -Seek new suppliers and put them into our supplier pool by evaluating them on quality, equipment, certificates, price level, technical supports etc -Do annual evaluation on current suppliers and eliminate those unqualified ones. All these actions will make sure that clients’ order will be delivered on time and we can find most suitable products among qualified suppliers in an efficient way.
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