Product Description

 DN100 4″ Double Flanged Fittings Cast Iron Dismantling Joint


1 Body BSEN1563 EN-GJS(QT)-450-10
2 Seals EPDM/NBR
3 Fasteners Stainless Steel/Carbon Steel with Dacromet Coating/GAL Carbon Steel
4 Coating Fusion Bonded Epoxy

(mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm)
80 220 180 200 16 19 330 112 80 132 160 200 8-Φ19 8-M16*340 13
100 220 180 200 16 19 330 112 100 156 180 220 8-Φ19 8-M16*340 16
125 220 180 200 16 19 330 112 125 184 210 250 8-Φ19 8-M16*340 16
150 220 180 200 16 19 330 112 150 211 240 285 8-Φ23 8-M20*340 25
200 220 180 200 17 20 340 123 200 266 295 340 8-Φ23           12-Φ23 8-M20*350                  12-M20*350 34
250 220 180 200 19       21.5   22       24.5   340 123 250 319 350                      355 395                      405 12-Φ23                 12-Φ28 12-M20*380                  12-M24*350 42
300 245 195 220 21.5 24.5 370 123 300 370 400                     410 445                      460 12-Φ23                 12-Φ28 12-M20*400                  12-M24*400 52
350 245 195 220 21.5     22.5   24.5    26.5   370 123 350 429 460                      470 505                      520 16-Φ23                 16-Φ28 16-M20*400                  16-M24*400 145
400 245 195 220 21.5                      24.5   24.5          28.5   380 135 400 480 515                      525 565                      580 16-Φ23                 16-Φ31 16-M24*430                  16-M27*430 145
450 254 195 220 21.5                      26 24.5                      29 380 135 450 530                      548 565                      585 615                      640 20-Φ28                 20-Φ31 20-M24*450                  20-M27*450 145
500 245 195 220 22.5                      27.5   26.5                      31.5   380 135 500 582                      609 620            650         670                      715 20-Φ28                 20-Φ37 20-M24*460                  20-M30*460 155
600 265 215 240 25                      31 30                      36 420 135 600 682                      720 725                     770 780                      840 20-Φ31                 20-Φ37 20-M27*500                 20-M33*500 197
700 265 215 240 27                    34.5 32.5                      39.5   420 135 700 794 840 895                    910 24-Φ31                 24-Φ37 24-M27*500                 24-M33*500 221
800 380 320 350 30                    38 35                    43 560 165 800 901 950 1015                   1571 24-Φ34                 24-Φ40 24-M30*530                 24-M36*500 254
900 380 320 350 32.5                   41.5 37.5                   46.5 560 165 900 1001 1050 1115                    1125 28-Φ34                 28-Φ40 28-M30*530                 28-M36*530 321
1000 380 320 350 35                   45 40                   50 560 165 1000 1112 1160                    1170 1230                      1255 32-Φ40                 28-Φ43 28-M33*570                 28-M39*570 382
1200 400 340 370 40                         52 45                         57 600 165 1200 1328 1380       1390 1455       1485 32-Φ40                 32-Φ49 32-M36*620 646

he Dismantling Joints are double flanged fittings that accommodate required longitudinal adjustment and can be locked at the required length with the tie bars supplied. Not only does this system allow for fast, easy maintenance of valves, pumps, or meters, it simplifies future pipe work modifications and reduces downtime when changes need to be made.

The installation is also straightforward using just a spanner and torque wrench to tighten the high tensile steel or stainless steel tie bars. With fewer tie bars than flange holes and the tie bars acting as flange jointing bolts, the process is speeded up but still offers a secure, rigid, fully end load




1. Q: Can I have my own customized product?
    A: Yes, you can customize the color, size, package, mark, material, etc.

2. Q: Do you provide a free sample?
    A: Yes, we could offer the sample for free but we don’t pay the cost of freight.

3. Q:  How long is your delivery time?
    A: Generally 5~10 days if the goods are in stock, and maybe 15~20 days if there aren’t enough, it depends on your quantity.

4. Q: Are you a manufacturer or trading company?

    A: We are a valve manufacturer and a trading company as well.

5. Q: Is there any stock in your factory?

    A: We stock valves of normal sizes.

6. Q: What are your terms of payment?

    A: Payment=1000USD, 30% T/T in advance , balance before shippment.

7. Payment
    T/T, L/C, OA, D/P, D/A

   By DHL, UPS, EMS, FedEx, SF, by Air, by Sea.

9. Q: How do I  contact you?

    A: You can contact us using TM( TradeMessenger ), cell phone, Email, etc.

10. Q: What’s your product range?

      A: We can produce the butterfly valve, gate valve, check valve, air vent head, hose valve, globe valve by ISO/ANSI/ANME/DIN/JIS/ EN//BS standard.

11. Q: Which countries do you export to?

      A: We export directly to the vast majority of countries in the world.

12. Q: What certificates will you provide?

      A: We can provide CE/ ISO.


As an experienced manufacturer, you can rest assured of the quality and service!


Connection: Clamp
Kind: Corrugated Compensator
Type: Axial
Head Code: Round
Material: Carbon Steel
Surface Treatment: Epoxy
US$ 5/Piece
1 Piece(Min.Order)

Request Sample



Customized Request

universal joint

Can universal joints be used in marine and offshore applications?

Yes, universal joints can be used in marine and offshore applications. Here’s a detailed explanation:

Marine and offshore environments present unique challenges in terms of harsh operating conditions, exposure to saltwater, vibrations, and high torque requirements. Universal joints offer several advantages that make them suitable for use in these demanding applications.

1. Misalignment Compensation: Marine and offshore systems often require the transmission of rotary motion between misaligned shafts due to the dynamic nature of the environment. Universal joints excel at compensating for angular misalignment, allowing for smooth power transmission even when the shafts are not perfectly aligned.

2. Torque Transmission: Universal joints are capable of handling high torque loads, which is crucial in marine and offshore applications. They can efficiently transfer power between the main engine or motor and various equipment, such as propellers, winches, pumps, or generators.

3. Compact Design: Space is often limited in marine and offshore systems, and universal joints offer a compact design compared to alternative methods of transmitting motion between misaligned shafts, such as gearboxes or flexible couplings. This compactness allows for more efficient use of available space.

4. Corrosion Resistance: Marine and offshore environments are highly corrosive due to the presence of saltwater and other corrosive agents. Universal joints can be designed and manufactured using materials that exhibit excellent corrosion resistance, such as stainless steel or non-corroding alloys, to ensure long-term performance and reliability in these environments.

5. Sealing and Lubrication: Proper sealing and lubrication are critical in marine and offshore applications to protect the universal joint’s internal components from water ingress and corrosion. Specialized sealing mechanisms, such as lip seals or labyrinth seals, can be implemented to prevent water intrusion, while effective lubrication systems ensure smooth operation and reduce wear.

6. Shock and Vibration Resistance: Marine and offshore equipment are subjected to significant shock and vibration loads due to wave motion, vessel movement, or equipment operation. Universal joints are designed to withstand these dynamic forces and provide reliable power transmission in such conditions. The use of high-quality bearings, robust construction, and proper balancing contribute to their resilience against shock and vibration.

7. Customization: Universal joints can be customized to suit specific marine and offshore applications. Manufacturers can tailor the design and materials to meet unique requirements, such as high-speed operation, extreme temperature variations, or specific size constraints. Customization ensures that the universal joints are optimized for their intended use, maximizing their performance and reliability.

When utilizing universal joints in marine and offshore applications, it is crucial to consider factors such as load requirements, environmental conditions, maintenance procedures, and compliance with relevant industry standards and regulations. Regular inspection, maintenance, and proper lubrication are necessary to ensure the longevity and reliable operation of universal joints in these challenging environments.

In summary, universal joints can be effectively used in marine and offshore applications due to their ability to compensate for misalignment, handle high torque loads, compact design, corrosion resistance, sealing and lubrication capabilities, shock and vibration resistance, and customization options. The selection and design of universal joints should consider the specific requirements and challenges associated with marine and offshore environments to ensure optimal performance and reliability.

universal joint

How do you address the effect of temperature variations on a universal joint?

Addressing the effect of temperature variations on a universal joint involves considering factors such as material selection, lubrication, and thermal expansion. Here’s a detailed explanation:

Temperature variations can have an impact on the performance and durability of universal joints. Extreme temperatures can affect the materials, lubrication, and dimensional stability of the joint components. To address these effects, the following measures can be taken:

  • Material Selection: Choosing materials with appropriate temperature resistance is crucial. The materials used in universal joints should have a suitable operating temperature range to withstand the expected temperature variations. For example, selecting heat-resistant alloys or materials with low thermal expansion coefficients can help mitigate the effects of temperature changes.
  • Lubrication: Proper lubrication is essential for reducing friction and wear in universal joints, especially under temperature variations. Lubricants with high-temperature stability and viscosity should be selected to ensure adequate lubrication at both low and high temperatures. It’s important to follow the manufacturer’s recommendations regarding lubrication intervals and the use of lubricants suitable for the operating temperature range.
  • Thermal Expansion Compensation: Universal joints can experience dimensional changes due to thermal expansion or contraction. These changes can affect the alignment and performance of the joint. To address this, measures such as incorporating design features that allow for thermal expansion compensation, using materials with low thermal expansion coefficients, or incorporating flexible elements can help minimize the impact of temperature variations on the joint’s operation.
  • Insulation: In situations where extreme temperatures are anticipated, providing insulation or heat shielding around the universal joint can help maintain more stable operating conditions. Insulation materials can help reduce the transfer of heat to or from the joint, minimizing the temperature variations experienced by the components.
  • Temperature Monitoring: Regular monitoring of the operating temperature of the universal joint can help identify any abnormal temperature variations that may indicate issues with lubrication, excessive friction, or other problems. Temperature sensors or thermal imaging techniques can be utilized for monitoring purposes.

It’s important to note that the specific measures taken to address temperature variations may depend on the application, the expected temperature range, and the manufacturer’s recommendations. Additionally, proper maintenance practices, including inspection, cleaning, and lubrication, are essential for ensuring the optimal performance and longevity of universal joints under temperature variations.

In summary, addressing the effect of temperature variations on a universal joint involves considering material selection, lubrication, thermal expansion compensation, insulation, and temperature monitoring. By implementing appropriate measures, the impact of temperature variations on the universal joint’s performance and durability can be minimized.

universal joint

What are the benefits of using a universal joint in a mechanical system?

Using a universal joint in a mechanical system offers several benefits that contribute to the efficient and reliable operation of the system. Here are some of the key advantages:

  • Misalignment compensation: One of the primary benefits of a universal joint is its ability to compensate for misalignment between rotating shafts. Universal joints can effectively transmit rotary motion between shafts that are not perfectly aligned, allowing for flexibility in system design and assembly. This flexibility accommodates various installation constraints and helps to minimize stress and wear on components.
  • Angular motion transmission: Universal joints enable the transmission of angular motion between shafts that are not parallel or collinear. They can transfer rotational movement even when the shafts are at different angles to each other. This capability is particularly useful in applications where the shafts need to be connected at non-linear or offset angles, providing versatility and enabling complex mechanical systems.
  • Torque transmission: Universal joints are capable of transmitting torque between shafts efficiently. They allow for the transfer of power from one shaft to another without a direct and rigid connection. This feature is especially important in applications where there may be slight misalignment or movement between the shafts due to factors like suspension systems, articulation, or vibration.
  • Reduced vibration and shock absorption: Universal joints can help dampen vibration andshocks in a mechanical system. They absorb and distribute the impact forces caused by uneven movement or external disturbances, reducing the transmission of vibrations to other parts of the system. This feature is particularly beneficial in applications where smooth operation and reduced wear and tear are essential, such as automotive drivelines or industrial machinery.
  • Constant velocity transmission: Certain types of universal joints, such as double joints or constant velocity joints, provide constant velocity transmission. These joints eliminate speed variations and maintain a consistent rotational speed even when the input and output shafts are at different angles. Constant velocity transmission is crucial in applications where precise and uniform motion is required, such as automotive steering systems or robotics.
  • Flexibility and articulation: Universal joints offer flexibility and articulation, allowing for movement and rotation in multiple directions. They can accommodate changes in the orientation and position of connected shafts, providing mechanical systems with the ability to adapt to dynamic conditions. This flexibility is particularly advantageous in applications involving moving parts, such as suspension systems, robotic arms, or machinery with articulating components.
  • Compact design: Universal joints are relatively compact in size, making them suitable for applications with space constraints. Their compact design allows for efficient integration into mechanical systems without occupying excessive space. This feature is valuable in various industries, including automotive, aerospace, and robotics, where optimizing space utilization is crucial.
  • Reliability and durability: Universal joints are designed to be durable and reliable, with the ability to withstand high loads, torque, and operating conditions. They are constructed from robust materials and undergo rigorous testing to ensure long-lasting performance. This reliability makes them suitable for demanding applications in industries such as automotive, manufacturing, agriculture, and more.

The benefits of using a universal joint in a mechanical system contribute to improved functionality, increased efficiency, and extended component lifespan. By enabling misalignment compensation, angular motion transmission, torque transfer, vibration reduction, constant velocity transmission, flexibility, and compact design, universal joints enhance the overall performance and reliability of mechanical systems.

China Custom DN 1800 Dismantling Joint for Butterfly Valve Pn10 Pn16  China Custom DN 1800 Dismantling Joint for Butterfly Valve Pn10 Pn16
editor by CX 2023-11-10


Universal Joint

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