China Good quality ASTM Sch80 Standard PVC-U Plastic Plumbing Fittings Reducer Coupling for Water Supply capacitor coupling

Product Description

ASTM SCH80 Standard PVC-U Plastic Plumbing Fittings Reducer Coupling for Water Supply


2) Size: 3/4″*1/2″-4″*3″
3) Standard: ANSI,DIN,JIS,CNS
4) Joint End: Socket


Size(mm) 3/4″*1/2″ 1″*1/2″ 1″*3/4″ 1-1/4″*3/4″ 1-1/4″*1″ 1-1/2″*1″ 1-1/2″*1-1/4″ 2″*1-1/4″
D(mm) 26.67  33.40  33.40  42.16  42.16  48.26  48.26  60.30 
L(mm) 39.50  42.50  45.50  48.50  51.50  56.00  61.00  64.00 
Z(mm) 37.00  30.00  30.00  33.00  33.00  36.00  36.00  39.00 
D1(mm) 21.34  21.34  26.67  26.67  33.40  33.40  42.16  42.16 
L1(mm) 39.00  42.00  45.50  50.00  53.00  57.50  61.00  67.00 
Z1(mm) 24.00  24.00  27.00  27.00  30.00  30.00  33.00  33.00 
Size(mm) 2″*1-1/2″ 2-1/2″*1-1/2″ 2-1/2″*2″ 3″*2″ 3″*2-1/2″ 4″*2-1/2″ 4″*3″
D(mm) 60.32  73.02  73.02  88.90  88.90  114.30  114.30 
L(mm) 64.00  74.00  80.00  83.00  89.50  99.50  107.50 
Z(mm) 39.00  46.00  46.00  49.00  49.00  59.00  59.00 
D1(mm) 48.26  48.26  60.32  60.32  73.02  73.02  88.90 
L1(mm) 70.00  76.50  79.50  87.50  107.00  107.00  110.00 
Z1(mm) 36.00  36.00  39.00  39.00  46.00  46.00  49.00 




#  Light weight, easy to load and unload 
#  Small resistance to fluidity 
#  Good electrical insulation 
#  Water quality unaffected 
#  Simple installation



* Potable water for cold and warm water installations
* For rainwater utilization systems
* For compressed air plants
* For swimming pool facilities
* For solar plants
* For agriculture and horticulture     
* Heating pipes for residential housing

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FAQ: (Frequently Asked Questions)

1. What is your MOQ?
Our MOQ is usually 5 CTNS.

2. What is your delievery time?
Our delievery is about 25-30days.

3. What is your payment terms?
We accept T/T, 100% L/C, or West Union and so on.

4. Could you provide free samples?
Usually, we offer free samples, customers bear freight cost. 

5. Why choose us?

Firstly, comparing with many factories, our prices are more competitive.

Secondly, We 100% test working pressure for ALL our products.

Finally, After- Services will be highly satisfied. Any problems and feedbacks will be responded efficiently.


Company introduction

SWD PLASTIC (Salvador Industrial Co., Ltd) is a leading and professional manufacturer and exporter for UPVC, CPVC, PPH, PVDF pipes, valves and fittings in China. We stick to the principle of ” Quality First, Service First, Continuous Improvement and Innovation to Meet the Customers”, and the quality management objective of ” Zero Defect, Zero Complaints”. 

SWD Products are widely used in Agricultural Irrigation, Wastewater Treatment, Aquaculture, Pharmaceutical Industry, Electroplating, Papermaking Industry…

Most of our products confirm to ANSI, DIN, BS, JIS & TIS standard and have been already sold to United States, Canada, Mexico, Chile, Colombia, Peru, Russia, Saudi Arabia, UAE, Iran, Iraq, Thailand, Philippines, Indonesia, Malaysia etc. With very good reputation!

After-sales Service: One Year Guarantee
Warranty: One Year Guarantee
Connection: Socket/Thread
Structure: Vertical
Flexible or Rigid: Rigid
Material: UPVC/CPVC/Pph/PVDF
US$ 0.64/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 Good quality ASTM Sch80 Standard PVC-U Plastic Plumbing Fittings Reducer Coupling for Water Supply   capacitor couplingChina Good quality ASTM Sch80 Standard PVC-U Plastic Plumbing Fittings Reducer Coupling for Water Supply   capacitor coupling
editor by CX 2023-08-01


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