China best ISO2531/En545 Ductile Cast Iron Di Gibault Coupling for PVC-U Pipe coupling episodes

Product Description

For Ductile Iron, Steel, PVC-U and Fiber Cement pipes.

Easy and fast installation:
– Angular deflection ± 6°
– Adjust to pipe displacement.

– The large gasket compensates for pipe ovality and irregularities on the pipe surface. 
– Extra long coupling sleeve = secure installation in both connection and repair situations. 
– Body without internal stop allows the connection of pipes of the same ø and pipe expansion, contraction and movement. 
– Leak tightness guaranteed by the compression of the 2 gaskets in the end rings. – Easy and fast installation. Tightening on 1 side only. 
– Corrosion resistance: 250 CZPT epoxy coating and Geomet 500 Gr. B bolts, nuts and washers.

Compliance with standards:
– Foundry products 
– Spheroidal graphite cast iron fittings for PVC drinking water pipes under pressure.
– ISO 2531: Ductile iron pipes, fittings, accessories and their joints for water applications

– ACS French approval for drinking water contact.

Note: This connection does not prevent pipe pull out. Adequate external restraint to pipework is essential.

– Standard couplings: DN 40 to DN500
PFA 16
Operating temperature: +0°C to +60°C

Water transmission and distribution network.
Pumping, treatment, storage.
Fire protection network.
Stormwater drainage and drainage systems. (type WC – NF EN 681-1).

2.Pipe Materials 


50 M12×180 2 135 130 110 122
63 M12×180 2 140 145 120 132
75 M12×180 2 152 145 120 132
90 M12×180 3 170 150 120 132
110 M12×210 3 194 160 140 151
125 M12×210 4 209 175 140 151
140 M12×240 4 228 175 140 151
160 M12×240 4 250 175 140 152
200 M12×240 4 294 220 170 181
225 M12×240 6 321 220 170 181
250 M12×280 6 347 220 170 181
315 M12×280 6 414 220 175 185
400 M12×280 8 505 245 195 210
500 M12×280 10 618 245 195 210

About Avannto

Valve World Exhibition

Dear Customers, the following questions are frequently asked by our customers, we put them as following, if you still have any questions haven’t been answered following, you can call our 24 hours telephone No. to get your quick answer.

1. What are your office hours?
You can reach us from 9:00 A. M. to 9:00 P. M. GTM+8, Monday to Friday, except weekends.

2. How soon can I get a price quote?
Once we know the Size, material, drive method we can provide you with 1 competitive price quote within 24 hours.

3. Can I get a sample?
Yes, the samples are free for you. But you need to offer 1 courier account NO. to afford the fee for samples shipping. The samples’ sending usually takes 5-7days.

4. How can my order produced by my brand?
Yes, you can. Pls offer your brand or LOGO design to us(.AI or.PSD format), then we could produce all goods with your brand or LOGO.

5. What’s your delivery time?
Except our legal holiday, it will take 2-4 weeks for us to finish all your orders’ production.

6. Is there a minimum order requirement?
Due to the high machine setup cost and shipping freight, our minimum order quantity is 5pcs

7. Do you have butterfly valve related accessories?
Yes, we have. We have accessories: pneumatic actuators, electric actuators, limit switches, solenoid valves, etc.

8. Will you match competitors’ prices?
If you find a lower price elsewhere for the exact same specification, we will meet or beat that price as long as it is a little higher than our cost price.

9. What are your terms of delivery?
We accept FOB, CIF etc. You can choose the 1 which is the most convenient or cost effective for you.

10. Where can I meet you by face to face?
A,Our headquarter is located in ZheJiang , if you travel to ZheJiang , you can visit our office at any time, we could pick you up from your location in ZheJiang and ZheJiang .
B,Our factories are located in ZheJiang and HangZhou, welcome to visit our factory before you cooperate with us.
C,We will attend China Spring Canton Fair and China Autumn Canton Fair every year, welcome to visit our booth at that time.

11. How can I be your sole agent in our country?
Welcome you to become our sole agent firstly. According to different countries’ demand, if your yearly purchase quantity from us can reach 10000 to 30000 pcs you could be our sole agent in your country. If you wanna know exact quantity requirement for each country, pls feel free to contact us at any time.

After-sales Service: ISO 2531/En545
Warranty: 20 Years
Standard: ISO 2531/En545
Technique: Casting
Nominal Diameter: Od48-63, Od630-650
Type: Socket Union
US$ 10/Piece
1 Piece(Min.Order)

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What Is a Coupling?

A coupling is a mechanical device that links two shafts together and transmits power. Its purpose is to join rotating equipment while permitting a small amount of misalignment or end movement. Couplings come in a variety of different types and are used in a variety of applications. They can be used in hydraulics, pneumatics, and many other industries.


Coupling is a term used to describe a relationship between different modules. When a module depends on another, it can have different types of coupling. Common coupling occurs when modules share certain overall constraints. When this type of coupling occurs, any changes to the common constraint will also affect the other modules. Common coupling has its advantages and disadvantages. It is difficult to maintain and provides less control over the modules than other types of coupling.
There are many types of coupling, including meshing tooth couplings, pin and bush couplings, and spline couplings. It is important to choose the right coupling type for your specific application to get maximum uptime and long-term reliability. Listed below are the differences between these coupling types.
Rigid couplings have no flexibility, and require good alignment of the shafts and support bearings. They are often used in applications where high torque is required, such as in push-pull machines. These couplings are also useful in applications where the shafts are firmly attached to one another.
Another type of coupling is the split muff coupling. This type is made of cast iron and has two threaded holes. The coupling halves are attached with bolts or studs.


The coupling function is an incredibly versatile mathematical tool that can be used in many different scientific domains. These applications range from physics and mathematics to biology, chemistry, cardio-respiratory physiology, climate science, and electrical engineering. The coupling function can also help to predict the transition from one state to another, as well as describing the functional contributions of subsystems in the system. In some cases, it can even be used to reveal the mechanisms that underlie the functionality of interactions.
The coupling selection process begins with considering the intended use of the coupling. The application parameters must be determined, as well as the operating conditions. For example, if the coupling is required to be used for power transmission, the design engineer should consider how easily the coupling can be installed and serviced. This step is vital because improper installation can result in a more severe misalignment than is specified. Additionally, the coupling must be inspected regularly to ensure that the design parameters remain consistent and that no detrimental factors develop.
Choosing the right coupling for your application is an important process, but it need not be difficult. To find the right coupling, you must consider the type of machine and environment, as well as the torque, rpm, and inertia of the system. By answering these questions, you will be able to select the best coupling for your specific application.


A coupling is a device that connects two rotating shafts to transfer torque and rotary motion. To achieve optimal performance, a coupling must be designed for the application requirements it serves. These requirements include service, environmental, and use parameters. Otherwise, it can prematurely fail, causing inconvenience and financial loss.
In order to prevent premature failure, couplings should be properly installed and maintained. A good practice is to refer to the specifications provided by the manufacturer. Moreover, it is important to perform periodic tests to evaluate the effectiveness of the coupling. The testing of couplings should be performed by qualified personnel.
China best ISO2531/En545 Ductile Cast Iron Di Gibault Coupling for PVC-U Pipe   coupling episodesChina best ISO2531/En545 Ductile Cast Iron Di Gibault Coupling for PVC-U Pipe   coupling episodes
editor by CX 2023-07-31