China manufacturer DN 1800 Dismantling Joint for Butterfly Valve Pn10 Pn16

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

What are the potential challenges in designing and manufacturing universal joints?

Designing and manufacturing universal joints can present various challenges that need to be addressed to ensure optimal performance and reliability. Here’s a detailed explanation:

1. Misalignment Compensation: Universal joints are primarily designed to accommodate angular misalignment between two shafts. Designing a universal joint that can effectively compensate for misalignment while maintaining smooth power transmission can be challenging. The joint must provide flexibility without sacrificing strength or introducing excessive play, which could lead to vibration, noise, or premature wear.

2. Torque Transmission: Universal joints are often used in applications that require the transfer of high torque loads. Designing the joint to handle these loads without failure or excessive wear is a significant challenge. The selection of appropriate materials, heat treatment processes, and bearing designs becomes crucial to ensure the strength, durability, and reliability of the joint.

3. Lubrication and Sealing: Universal joints require proper lubrication to minimize friction, heat generation, and wear between the moving components. Designing an effective lubrication system that ensures sufficient lubricant supply to all critical areas can be challenging. Additionally, designing seals and protective covers to prevent contamination and retain lubrication presents a challenge, as the joint must maintain flexibility while ensuring adequate sealing.

4. Bearing Design and Wear: Universal joints rely on bearings to facilitate smooth rotation and to support the shafts. Designing the bearing arrangement to withstand the loads, maintain proper alignment, and resist wear is essential. Choosing the appropriate bearing type, such as needle bearings or plain bearings, and optimizing their size, material, and lubrication conditions are key challenges in the design process.

5. Manufacturability: Manufacturing universal joints with precision and consistency can be challenging due to their complex geometries and the need for tight tolerances. The manufacturing process must ensure accurate machining, assembly, and balancing of the joint components to achieve proper fit, alignment, and balance. Specialized machining techniques and quality control measures are often required to meet the desired specifications.

6. Cost and Size Optimization: Designing universal joints that are cost-effective and compact while meeting performance requirements can be a challenging task. Balancing the need for robustness, durability, and material efficiency with cost considerations requires careful engineering and optimization. Designers must strike a balance between performance, weight, space constraints, and manufacturing costs to create an efficient and economical universal joint.

7. Application-Specific Considerations: Designing universal joints for specific applications may introduce additional challenges. Factors such as environmental conditions, temperature extremes, exposure to corrosive substances, high-speed operation, or heavy-duty applications need to be carefully considered and addressed in the design and material selection process. Customization and adaptation of universal joints to meet unique application requirements can pose additional challenges.

Addressing these challenges in the design and manufacturing process requires a combination of engineering expertise, material science knowledge, advanced manufacturing techniques, and thorough testing and validation procedures. Collaboration between design engineers, manufacturing engineers, and quality control personnel is crucial to ensure the successful development and production of reliable universal joints.

In summary, the potential challenges in designing and manufacturing universal joints include misalignment compensation, torque transmission, lubrication and sealing, bearing design and wear, manufacturability, cost and size optimization, and application-specific considerations. Overcoming these challenges requires careful engineering, precision manufacturing processes, and consideration of various factors to achieve high-performance and reliable universal joints.

universal joint

What is the effect of varying operating angles on the performance of a universal joint?

Varying operating angles can have a significant effect on the performance of a universal joint. Here’s a detailed explanation:

A universal joint is designed to transmit rotational motion between two shafts that are not collinear or have a constant angular relationship. The operating angle refers to the angle between the input and output shafts of the joint. The effects of varying operating angles on the performance of a universal joint are as follows:

  1. Changes in Torque and Speed: As the operating angle of a universal joint increases or decreases, the torque and speed transmitted through the joint can be affected. At small operating angles, the torque and speed transmission are relatively efficient. However, as the operating angle increases, the torque and speed capacity of the joint may decrease. This reduction in torque and speed capability is due to increased non-uniform loading and bending moments on the joint’s components.
  2. Increased Vibrations and Noise: Varying operating angles can introduce vibrations and noise in a universal joint. As the operating angle becomes more extreme, the joint experiences higher levels of dynamic imbalance and misalignment. This imbalance can lead to increased vibration levels, which may affect the overall performance and lifespan of the joint. Additionally, the non-uniform motion and increased stress on the joint’s components can generate additional noise during operation.
  3. Angular Misalignment Compensation: One of the primary advantages of universal joints is their ability to compensate for angular misalignment between shafts. By accommodating varying operating angles, the joint allows for flexibility in transmitting motion even when the input and output shafts are not perfectly aligned. However, extreme operating angles may challenge the joint’s ability to compensate for misalignment effectively. Very large operating angles can lead to increased wear, decreased joint life, and potential loss of motion transmission efficiency.
  4. Increased Wear and Fatigue: Varying operating angles can contribute to increased wear and fatigue on the universal joint’s components. As the operating angle increases, the joint experiences higher levels of stress and non-uniform loading. This stress concentration can lead to accelerated wear and fatigue, especially at critical areas such as the bearing caps and needle bearings. Continuous operation at extreme operating angles without proper lubrication and maintenance can significantly reduce the joint’s lifespan.
  5. Heat Generation: Extreme operating angles can result in increased heat generation within the universal joint. The non-uniform motion and increased friction caused by high operating angles can lead to elevated temperatures. Excessive heat can accelerate lubricant breakdown, increase wear rates, and potentially cause premature failure of the joint. Adequate cooling and proper lubrication are essential to mitigate the effects of heat generation in such cases.
  6. Efficiency and Power Loss: Varying operating angles can impact the overall efficiency of a universal joint. At small to moderate operating angles, the joint can transmit motion with relatively high efficiency. However, as the operating angle increases, the joint’s efficiency may decrease due to increased friction, bending moments, and non-uniform loading. This reduction in efficiency can result in power loss and decreased overall system performance.

Therefore, it is crucial to consider the effects of varying operating angles on the performance of a universal joint. Proper design, careful selection of operating angles within the joint’s specified limits, regular maintenance, and adherence to manufacturer guidelines can help mitigate the potential negative effects and ensure optimal performance and longevity of the joint.

universal joint

Are there different types of universal joints available?

Yes, there are different types of universal joints available to suit various applications and requirements. Let’s explore some of the commonly used types:

  • Single Joint (Cardan Joint): The single joint, also known as a Cardan joint, is the most basic and widely used type of universal joint. It consists of two yokes connected by a cross-shaped center piece. The yokes are typically 90 degrees out of phase with each other, allowing for angular displacement and misalignment between shafts. Single joints are commonly used in automotive drivelines and industrial applications.
  • Double Joint: A double joint, also referred to as a double Cardan joint or a constant velocity joint, is an advanced version of the single joint. It consists of two single joints connected in series with an intermediate shaft in between. The use of two joints in series helps to cancel out the velocity fluctuations and reduce vibration caused by the single joint. Double joints are commonly used in automotive applications, especially in front-wheel-drive vehicles, to provide constant velocity power transmission.
  • Tracta Joint: The Tracta joint, also known as a tripod joint or a three-roller joint, is a specialized type of universal joint. It consists of three rollers or balls mounted on a spider-shaped center piece. The rollers are housed in a three-lobed cup, allowing for flexibility and articulation. Tracta joints are commonly used in automotive applications, particularly in front-wheel-drive systems, to accommodate high-speed rotation and transmit torque smoothly.
  • Rzeppa Joint: The Rzeppa joint is another type of constant velocity joint commonly used in automotive applications. It features six balls positioned in grooves on a central sphere. The balls are held in place by an outer housing with an inner race. Rzeppa joints provide smooth power transmission and reduced vibration, making them suitable for applications where constant velocity is required, such as drive axles in vehicles.
  • Thompson Coupling: The Thompson coupling, also known as a tripodal joint, is a specialized type of universal joint. It consists of three interconnected rods with spherical ends. The arrangement allows for flexibility and misalignment compensation. Thompson couplings are often used in applications where high torque transmission is required, such as industrial machinery and power transmission systems.

These are just a few examples of the different types of universal joints available. Each type has its own advantages and is suitable for specific applications based on factors such as torque requirements, speed, angular displacement, and vibration reduction. The selection of the appropriate type of universal joint depends on the specific needs of the application.

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


Recent Posts