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.
Payment:
30% T/T When Order, 70% T/T Before ShipmentProduct Origin:
ChinaColor:
CustomizationShipping Port:
Shanghai ChinaMaterial:
Forged Steel Ball ValveMethod of Operation:
Bare StemThe 3 way ball valve is designed with either two of the ports can connect together. The 8 inch multi-way ball valve has a forged steel A105N body, trunnion structure and bare stem operation, RF connection end.
Product Description
|
Type |
Ball Valve |
|
Size |
8 Inch |
|
Pressure |
150LB |
|
Connection |
RF End |
|
Operation |
Bare Stem |
|
Structure |
Multi-Way, 3-Way, Trunnion-Mounted Ball |
|
Body Material |
ASTM A105N |
|
Trim Material |
SS316+RPTFE |
|
Design Code |
API 6D |
|
Pressure & Temp Code |
ASME B16.34 |
|
Face to Face |
ASME B16.10 |
|
End Connection |
ASME B16.5 |
|
Inspection |
API 598 |
|
Medium |
Oil, Water, Gas |
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.
The 3 way T type ball valve owns flange connection, gearbox, ss304 body, ball and stem. The 3 inch flanged ball valve features in its T type three way ports which could connect any pair of ports or three ports together. Quick Detail Type Ball Valve Size 3" Pressure ANSI 300 Construction Three Way Ball Valve Connection Flanged Connection Operation Mode Gearbox Body Material A182 F304 Manufacture and Design API 6D Pressure & Temp ASME B16.34 End to End Code ASME B16.10 End Connection ASME B16.5 Inspection API 6D, API 598 Temperature Range -29℃~+200℃ Medium WOG Related Knowledge What is the difference between T port and L port 3-way ball valve? Normally speaking, 3-way ball valve can be divided into T type and L type. A T port three-way ball valve can connect any two ports, and even connect all three ports together at the same time. However, an L port three-way ball valve can only connect the center port with either side port or disconnect three ports. FAQ 1. Can the orders always be delivered on time? Our purchasing team follows up very closely with each order to make sure on-time delivery for most of orders. In 2018, more than 90% orders were delivered on time, and we are dedicated to doing better. 2. What’s the normal delivery lead time? For normal material, usually the delivery time is about 35~40 days, and for forged material, the delivery can even be shortened to 20~25 days. We believe the short lead time can make our offer more competitive and help you secure more orders. 3.Do you have different price levels for us? With our numerous suppliers, different price levels are available with us, so we are able to help you win more customer from different markets requesting for high, medium and low prices.
The DN100 3 way ball valve is isolating valve designed to redirect the service fluid flow rather than throttling or regulating purposes. Suitable for water, steam, gas, oil, crude oil, acid, alkali and other liquids and gases without mechanical impurities.
A three-way ball valve has three ports or openings that are connected to piping or tubing for gas or fluid flow (media) to pass through.
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.
3" 150LB wafer check valve is made according to API 594 standard. The valve body is made of A352 LCC+316. It has the structural characteristics of double disc and wafer type. Its connection mode is RF.
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.
The 20 inch metal seated ball valve is designed for high temperature application or application with solid particulate. The valve has welded body, RF flange connection, bare stem for actuators, belonging to trunnion mounted type. Quick Detail Type Ball Valve Size 20" Pressure ANSI 600 Construction Trunnion Type, One-Piece Body, Fully Welded, Metal to Metal Seat Connection Flanged Operation Bare Stem Body Material Forged Steel ASTM A105 Design Standard API 6D Pressure & Temp ASME B16.34 Face to Face Dimension ASME B16.10 End Connection ASME B16.5 Inspection API 598 Temperature Range -29℃~+200℃ Media Oil, Water, Gas Dimension CLASS 600 DN mm 50 65 80 100 150 200 250 300 350 400 450 500 NPS in 2 2.5 3 4 6 8 10 12 14 16 18 20 L (RF) mm 292 330 356 432 559 660 787 838 889 991 1092 1194 in 11.5 13 14 17 22 26 31 33 35 39 43 47 L1 (BW) mm 292 330 358 432 22 660 787 838 889 991 1092 1194 in 11.5 13 14 17 559 26 31 33 35 39 43 47 L2 (RTJ) mm 295 333 359 435 562 664 791 841 892 994 1095 1200 in 11.63 13.13 14.13 17.13 22.13 26.13 31.13 33.13 35 39.5 43.1 47.3 H mm 153 165 195 213 272 342 495 580 630 725 800 850 in 6.02 6.5 7.68 8.39 10.7 13.5 19.5 22.85 24.8 28.5 31.5 33.5 Do(W) mm 600 850 1250 1300 1500 *350 *350 *600 *600 *800 *800 *800 in 23.62 33.46 49.25 51.22 59 13.8 13.8 23.6 23.6 31.5 31.5 31.5 RF(Kg) 38 56 66 122 217 350 660 820 830 1160 1420 1650 BW(Kg) 31 51 58 117 200 327 605 790 800 1030 1305 1505 *Worm Gear or Electric actuator operated Related Knowledge When to use metal seated ball valve? The seat of a metal seated ball valve is often stellite, stainless steel, or tungsten carbide instead of soft seat material like ptfe, peek, nylon, teflon, and devlon. These metal to metal seat ball valves are especially applicable for: -Media with high temperature -Media with solid particulate for high abrasion -Media with severe condition, like high erosion and corrosion -Media with high viscosity like heavy oil Our Main Product Range Dervos main products include ball valves, butterfly valves, check valves, gate valves, globe valves, and plug valves in different materials, sizes, standards and types as per clients’ requests.
The double- disc check valve, made of CF8 stainless steel, has excellent resistance to corrosion. Designed in accordance with DIN 3202, the check valve is about to connect to pipes with WAFER. Quick Detail Type Check Valve Nominal Diameter DN100 NominalPressure PN25 Construction Double disc/ Dual Plate Connection Wafer Type Design & Manufacture DIN 3202 End to End DIN 3202 Flange End Dimension DIN 2401 Test & Inspection API 598 Temperature Range -29℃~+425℃ Body Material A351 CF8 Wedge Material A351 CF8 Media W.O.G. Dervos Packaging Good packing means good first impression. Just imagine how do you feel differently when seeing two boxes below? And you will know the reason why in Dervos we value packaging so much. In Dervos, we make sure- 1. Every valve isclean and dry. What do we do? -Clean the valve before packing -Add anti-rust oil -Add flange cover 2. No damageto valves in delivery. How do we achieve this? -Fix the valve with iron wire -Separate the valve with soft material -Layer the valve with plywood 3. Strong box and clear shipping mark
The dual disc wafer check valve is designed as per API 594 and tested per API 598. The bronze non return valve is applicable for sea water. Quick Detail Type Check Valve Size 6'' DesignPressure Class 150 Construction Dual Plate Type, With Retainer Connection Wafer Type Design & Manufacture API 594 End to End ASME B16.10 Connection ASME B16.5 Pressure & Temp ASME B16.34 Test & Inspection API 598 Body Material Aluminum Bronze C95800 Trim Material Aluminum Bronze C95800 Media W.O.G. Dervos Inspection after Valve Assembly Valve quality is one of perspectives we care about most. In Dervos, quality control starts from raw material, machining, assembly to pre-shipment inspection. After assembly, the quality checking team will do visual checking, dimension checking, hydraulic testing and air testing. Every order must pass the test per inspection standards. Otherwise our quality checking team will not release the shipment. Inspection Reports Documents can be used to prove how we control valve quality. Along with every order, Dervos will provide clients with an inspection report & a 3.1 mill test report for free. In Dervos inspection report, you will see the actual results of dimension checking and pressure testing along with painting and packing picture. All these info are shown through data and clear pictures. In 3.1 mill test report, we will show you the chemical composition, mechanical property and heat number for valve body, bonnet, stem, disc and so on.
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.
The 1 inch sleeved type plug valve is made of A216 WCB as per API 599. Thanks to its PTFE seat, the valve has excellent sealing and anti-corrosion performance. The valve is capable in working condition lower than 180 degree.
Copyright © 2015-2024 DERVOS VALVE CO.,LTD.All Rights Reserved Blog / Sitemap / XML / Privacy Policy
