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.
In industrial production, high-pressure ball valves play a crucial role, and damage to the sealing surface may lead to leakage and performance degradation. Therefore, measures must be taken to prevent and protect the sealing surface. 1. Proper Operation and Usage When operating high-pressure ball valves, it is essential to follow the correct operating procedures and technical requirements. Do not exceed the rated pressure and temperature range of the valve. Avoid over-tightening the valve to prevent damage to the sealing surface or premature wear. 2. Regular Inspection and Maintenance Regularly inspect the sealing surface of the ball valve, especially valves exposed to high-pressure and high-temperature environments. Remove any debris and dirt around the valve to ensure the sealing surface is in good working condition. 3. Select Appropriate Sealing Materials Choose suitable sealing materials according to the requirements of the working environment. For instance, in high-temperature or chemically corrosive environments, select sealing materials that are resistant to high temperatures and corrosion. Regularly inspect the wear and aging of sealing materials and promptly replace damaged seals. 4. Preventing Foreign Object Intrusion Install filters or screens to prevent foreign objects from entering the valve body and damaging the sealing surface. Avoid conducting messy operations around high-pressure ball valves to reduce the intrusion of external impurities. 5. Timely Repair and Replacement If damage or wear is found on the sealing surface, stop using it immediately and proceed with repairing or replacing the seals to prevent leaks from causing more serious issues. 6. Training and Education Provide training to operators to ensure they understand the working principles and proper operation methods of high-pressure ball valves, reducing the risk of seal surface damage due to operational errors. 7. Minimize Frequent Opening and Closing Reduce the frequency of opening and closing high-pressure ball valves because frequent operation increases wear and fatigue on the sealing surface, leading to premature failure. Where possible, take measures to minimize valve cycling, such as planning production schedules rationally or employing automated control systems. 8. Regular Cleaning and Maintenance Perform regular cleaning and maintenance on high-pressure ball valves to remove accumulated dirt and deposits inside the valve body, ensuring the valve operates smoothly and the sealing surface remains clean. Regular cleaning effectively reduces contamination and corrosion of the sealing surface, extending the lifespan of the seals. 9. Choose High-Quality Ball Valves Select high-quality high-pressure ball valve products to ensure that the design and manufacturing quality of the valves meet standard requirements and possess excellent performance and reliable sealing capabilities. Valves from DERVOS typically offer longer lifespan and better sealing effects, effectively...
Non-Lubricated, Sleeved Plug Valves incorporate state-of-the-artPPL seat design. With little required maintenance and trouble-free operation, the 3 inch 150 LB valve will ensure a high integrity bubble-tight seal.
Payment:
30% when order confirmed, 70% before shipmentProduct Origin:
ChinaColor:
CustomizationShipping Port:
Shanghai, ChinaLead Time:
30~60 days Ex Works after order confirmationMaterial:
WCBMethod of Operation:
Pneumatic actuatorQuick Detail
|
Type |
Plug Valve |
|
Nominal Diameter |
3 Inch |
|
NominalPressure |
150 LB |
|
Construction |
Sleeved Type |
|
Connection |
RF |
|
Design & Manufacture |
API 599 |
|
End to End Dimension |
ASME B16.10 |
|
Test & Inspection |
API 598 |
|
Body Material |
A216 WCB |
|
Disc Material |
A315 CF8M |
|
Temp. Range |
≤180℃ |
|
Media |
W.O.G |
General Description
Sleeved plug valves are non-lubricated quarter-turn valves that achieve sealing through the use of a compressible sleeve as a sealing member.
Features
1. Its sealing is realized by the sealing face around the sleeve. It has unique 360 degree metal edge for protection and fixing of the sleeve.
2. No residue in the plug valve cavity.
3. Metal edge performs self-cleaning when the plug is rotated, applicable to the operation condition that is glutinous.
4. Its characteristic double-direction flow makes installation and use more convenient.
Technical Drawing
Dimension Check
Painting
Product Application
Dervos valves can be widely used in varieties of industries, such as petrochemical,pipeline,oil & gas,marine,water treatment,power station industries and etc.
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 6 inch sleeved plug valve features in non lubricated design and soft seat. The full port plug valve is made of carbon steel body and PTFE seat as per API 6D, with Class 150 flange connection. Quick Detail Type Plug Valve Size 6'' Design Pressure 150LB Construction Self-Lubricated Type, Sleeved Type, Soft Seat Connection Type RF Flange Operation Gearbox Operation Design Code API 599 Face to Face ASME B16.10 End Connection ASME B16.5 Pressure & Temp ASME B16.34 Test & Inspection API 598 Body Material A216 WCB Temperature Range -29℃~+425℃ Application Water, Oil, Gas Material & Dimension No Part Name Carbon steel to ASTM Stainless steel to ASTM WCB LCB CF8 CF8M CF3 CF3M 1 Body A216 WCB A350 LCB A351 CF8 A351 CF8M A351 CF3 A351 CF3M 2 Bonnet A216 WCB A350 LCB A351 CF8 A351 CF8M A351 CF3 A351 CF3M 3 Plug A105 A182 F304 A351 CF8 A351 CF8M A351 CF3 A351 CF3M 4 Stem A182 F6 A182 F6 A182 F304 A182 F316 A182 F304L A182 F316L 5 Seat Ring PTFE 6 Gasket PTFE or Stainless Steel and Graphite 7 Stem Seat PTFE PTFE PTFE PTFE PTFE PTFE 8 Small spring 17-17PH 9 Small ball A182 F304 or A182 F316 10 Gland A182 F6 A182 F6 A182 F304 A182 F316 A182 F304L A182 F316L 11 Gland Flange A216 WCB A350 LCB A351 CF8 A351 CF8M A351 CF3 A351 CF3M 12 Stem packing PTFE or Graphite 13 Bonnet bolt A193 B7 or A320 L7 or A320 B8 or A193 B8M 14 Bonnet nut A194 2H or A194 4 or A194 8 Class 150 DN mm 15 20 25 40 50 65 80 100 150 200 250 300 NPS in 1/2 3/4 1 1 1/2 2 2 1/2 3 4 6 8 10 12 L(RF) mm 108 117 127 165 178 191 203 229 394 457 533 610 in 4.25 4.6 5 6.5 7 7.5 8 9 15.5 18 21 24 L1(BW) mm 140 152 165 190 216 241 283 305 457 521 559 635 in 5.5 6 6.5 7.48 8.5 9.5 11.13 12 18 20.5 22 25 L2(RTJ) mm 119 129.7 139.7 178 191 203 216 241 406 470 546 622 in 4.69 5.11 5.5 6.9 7.5 8 8.5 905 16 18.5 21.5 24.5 H mm 59 63 75 92 153 165 195 213 272 342 495 580 in 2.3 2.5 2.95 3.74 6.02 6.5 7.68 8.39 10.7 13.5 19.5 22.85 D(W) mm 130 130 160 230 400 400 600 850 1100 1500 350* 350* in 5.1 5.1 6.3 9 15.74 15.74 23.62 33.46 43.3 59 13.8 13.8 Weight (Kg) RF 2.3 3 4.5 7 15 20 25 40 97 160 240 390 BW 2.0 2.5 3.8 5.8 12 17 21 36 92.8 154 227 365
The PTFE sleeved plug valve is made of CF3 body and plug as per API 6D. The valve owns the feature of reduced port and good sealing performance. We call this type of valve as non lubricated plug valve or self lubricated plug valve. Quick Detail Type Plug Valve Size 2'' DesignPressure 300LB Construction Sleeved Type, Non Lubricated Type, Soft Seat ConnectionType Flange Operation Lever Operation Design Code API 599, API 6D Face to Face ASME B16.10 End Connection ASME B16.5 Pressure & Temp ASME B16.34 Test & Inspection API 598 Body Material CF3 Temperature Range -29℃~+120℃ Application Water, Oil, Gas Dimension Checking Hydrostatic Testing
This 1/2 Inch plug valve is made of A216 WCB, according to API598.With little required maintenance and trouble-free operation, a high integrity bubble-tight seal is provided both in-line and to atmosphere.
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.
DN250 PN25 plug valve is made according to API599 standard. The valve body is made of A216 WCB. It has the structural characteristics of soft sealing plug valve. Its connection mode is RF. And it has turbine 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.
The high performance butterfly valve is designed with double eccentric or double offset structure. The valve has cast steel WCB body, stainless steel disc and stem along with RPTFE soft seat. Quick Detail Type Butterfly Valve Nominal Size 6 Inch Nominal Pressure Class 150 Structure Double Offset, Double Eccentric, Soft Seat Connection Type Lug Type Operation Gear Operated Design Code API 609 Face to Face ASME B16.10 End Connection ASME 16.5 Test & Inspection API 598 Body Material Cast Steel WCB Trim Material CF8M Disc, 17-4PH Stem, RPTFE Seat Application Water, Oil, Gas Dervos Inspection Report
The double-disc check valve, made of A395 D1, has excellent resistance to corrosion. Designed in accordance with API594, the check valve is connected to pipes with WAFER. This valve is eligible to be put in marine working conditions.
The 16 inch triple offset butterfly valve is designed with metal seat, stainless steel CF8M body, disc and stem. The fully lugged butterfly valve with gearbox has Class 150 design pressure as per API 609. Design Feature 1. Small volume, light weight, simple structure 2. Multi-layer metal seated/fully metal seated 3. Firesafe design 4. Anti-blowout stem 5. Small torque value for operating easily 6. Reliable sealing and could meet zero leakage requirement 7. With function of regulating flow 8. Triple eccentric design for minimized wear of sealing face Quick Detail Type Butterfly Valve Size 16'' Pressure ANS 150 Structure Triple Eccentric, Triple Offset, Metal Seated Connection Type Lug Type Operation Gearbox Operated Design Code API 609 Face to Face ASME B16.10 End Connection ASME B16.5 Test & Inspection API 598 Body Material A351 CF8M Temperature Range -29℃~+425℃ Application Water, Oil, Gas Material 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 Below Axle Bush PTFE or Stainless Steel and Graphite Spiral Wound 3 Stem A182 F6 A182 F304 A182 F304 A182 F304 A182 F304 A182 F316 A182 F304L A182 F316L 4 Seat Ring F6 Stellite 6 Stellite 6 Stellite 6 A182 F304 A182 F316 A182 F304L A182 F316L 5 Butterfly Plate A216 WCB A217 WC6 A217 WC9 A217 C5 A351 CF8 A351 CF8M A351 CF3 A351 CF3M 6 Lock Ring A105 A182 F22 A182 F22 A182 F22 A182 F304 A182 F316 A182 F304L A182 F316L 7 Pin Carbon Steel or Alloy Steel 8 Screw Carbon Steel or Alloy Steel 9 Top Axle Bush PTFE or Stainless Steel and Graphite Spiral Wound 10 Packing Graphite+SS304 11 Bolt A193 B7 A193 B7 A193 B7 A193 B7 A193 B8 A193 B8 A193 B8 A193 B8 12 Nut A194 2H A194 2H A194 2H A194 2H A194 Gr.8 A194 Gr.8 A194 Gr.8 A194 Gr.8 13 Bolt A193 B7 A193 B7 A193 B7 A193 B7 A193 B8 A193 B8 A193 B8 A193 B8 14 Nut A194 2H A194 2H A194 2H A194 2H A194 Gr.8 A194 Gr.8 A194 Gr.8 A194 Gr.8 15 Yoke A216 WCB A217 WC6 A217 WC9 A217 C5 A351 CF8 A351 CF8M A351 CF3 A351 CF3M 16 Gland A182 F6 A182 F304 A182 F304 A182 F304 A182 F304 A182 F316 A182 F304L A182 F316L
2" 600LB globe valve is made according to API 623 standard. The valve body is made of ASTM A351 CF8M. It has the structural characteristics of low in and high out and welded valve seat. Its connection mode is RF. And it has hand wheel operation mode.
20" 125LB strainer is made according to manufacturer's standard. The valve body is made of GGG50. It has the structural characteristics of basket style and body cover bolted. Its connection mode is FF.
The 2inch axial nozzle check valve is the preferred solution for preventing return flow or shocks on critical process equipment. Thank for its LCB body, the valve is capable for working temperature down to -46 degree Celsius.
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