RKS fluid was founded in 1997. We are a production workshop for both foundry and machining, research & development center, and quality inspection cent...
Series: Candle Filter Filter core length: 800~2500 Filter cylinder dimensions: 550~2200 Filter cake specification:15~60mm Filter core number: 7~205 Filter area: 0.9~144.8㎡ Application: Biopharmaceutical, Chemical Industry, Food and beverages, Metal processing
Butterfly valves have been around for a long time, and are used for a variety of applications. They made their first appearance during the 1930s, and have been utilized by several industries ever since. Often made out of cast iron, butterfly valve's name is based from the functionality of its disc.
The wafer butterfly valve is one of the most common types of valves in industrial pipelines. The structure of wafer butterfly valve itself is relatively small. It is only necessary to put the butterfly valve in the middle of the flange at both ends of the pipe, and use the stud bolt to pass through the pipe flange and the pair.
Valves are the most common equipment in chemical companies. It seems easy to install valves, but if they are not implemented in accordance with the re...
The manual valve is a valve operated by the handle and the hand wheel, and is a commonly used valve on the equipment pipeline.
DIN standard now uses EN standard structure length
EN 558-1 PN flange connection valve construction length (instead of DIN 3202), EN 558-2 CLASS flange connection valve construction length (instead of BS2080), EN 12982 butt weld end valve construction length (instead of DIN 3202), DIN standard The length of the structure including the length of the API valve is basically the same as the length of the GB...
The butterfly valve disc is a key component of the butterfly valve, which acts on closing and opening and closing. Butterfly valve seat and butterfly ...
Resilient-seated gate valve with bolted cover connection; made of ductile iron materials and with epoxy coating, designed as both clockwise and anti-c...
What is Kieselguhr Filter? What's the working principle of Kieselguhr Filter? The kieselguhr filter (Candle filter / Cake Filter) which we for customized for fluorine chemical plant six more lithium fluoride phosphate phosphorus process have been installed and working for two years
MINOTAUR series replaceable seat high performance butterfly valve
Dismantling joints are widely used in water transmission pipelines, pump stations and valve installations. Their primary function is to provide axial adjustment during installation and allow easier removal of valves, pumps or other pipeline equipment during maintenance.
Although the component itself is relatively simple, improper installation may lead to alignment issues, bolt stress or leakage at flange connections.
1. Understand the Function
A Dismantling joints is designed to provide limited axial adjustment, typically used to compensate for installation tolerances between flanged equipment. In many water pipeline systems, dismantling joints are installed together with: Butterfly valves, Gate valves, Pumps and Flow meters etc.
The adjustable length allows installers to simplify alignment and reduce the difficulty of removing equipment during future maintenance.
It is important to note that dismantling joints are not intended to absorb thermal expansion like expansion joints.
2. Pre-Installation Inspection
Before installation, the following checks are recommended:
Any protective covers on flange faces should be removed only immediately before installation to prevent contamination.
3. Pipeline Alignment
Proper pipeline alignment is one of the most important factors during installation.
The dismantling joint should not be used to compensate for major misalignment in the pipeline. If the pipeline is forced into position using the joint, excessive stress may be transferred to:
During installation, the pipeline should be aligned first, and the dismantling joint should only be used to accommodate small dimensional tolerances.
4. Installation Procedure
A typical installation process includes the following steps:
Uniform bolt tightening is important to ensure even gasket compression and avoid flange leakage.
5. Adjustment and Locking
After the pipeline section has been properly aligned and the flange bolts are tightened, the tie rods should be secured to maintain the designed installation length.
The tie rods help prevent excessive movement of the joint during operation, especially in systems with pressure fluctuations. However, they should not be over-tightened in a way that restricts the intended installation adjustment.
6. Pressure Testing
Once installation is completed, the pipeline system should undergo pressure testing according to the project specification.
During testing, attention should be paid to:
flange gasket sealing, bolt tension consistency, any axial movement of the joint
If leakage occurs, bolt tightening should be checked before disassembling the joint.
7. Maintenance Considerations
One of the main advantages of dismantling joints is facilitating equipment removal during maintenance.
When a valve or pump needs to be removed:
This reduces the need for cutting or modifying pipeline sections.
A dismantling joint is a practical component that simplifies installation and maintenance in many pipeline systems. Proper alignment, controlled adjustment and correct bolt tightening are essential for reliable performance.
Following standard installation practices helps ensure that the joint performs its intended function without introducing unnecessary stress to the pipeline or connected equipment.
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