China Hot selling PVC/UPVC off-Centre Big and Small Reducer Drain Pipe Fitting Coupling

Product Description

PVC/UPVC Off-Centre Big and Small Reducer Drain Pipe Fitting Coupling 

1. Basic information:


(1) Resistant to temperatures, good impact strength, thicker wall, more resistant to pressure.
(2) Low noise (reduced by 40% compared to galvanized steel pipes)
(3) Light colors and excellent design ensure suitability for both exposed and hidden installation.
(4) Long usage life.

Item Name Plastic Pipe fitting
Standard Din
Color Black or Customized
Material PVC/UPVC
Packing Carton, Polybag, Color Box, or Customized
Pressure Normal-pressure
SIZE 1/2”-4”
Delivery port HangZhou by sea


Name   Model   Size 
Coupling  QX51 1/2″, 3/4″, 1″, 1 1/4″,   1 1/2″, 2″, 2 1/2″, 3″, 4″ 
CAP  QX52 1/2″, 3/4″, 1″, 1 1/4″,   1 1/2″, 2″, 2 1/2″, 3″, 4″ 
TEE  QX53 1/2″, 3/4″, 1″, 1 1/4″,   1 1/2″, 2″, 2 1/2″, 3″, 4″ 
FEMALE ADAPTER QX54 1/2″, 3/4″, 1″, 1 1/4″,   1 1/2″, 2″
MALE ADAPTER  QX55 1/2″, 3/4″, 1″, 1 1/4″,   1 1/2″, 2″
90DEG ELBOW QX56 1/2″, 3/4″, 1″, 1 1/4″,   1 1/2″, 2″, 2 1/2″, 3″, 4″ 
45DEG ELBOW QX57 1/2″, 3/4″, 1″, 1 1/4″,   1 1/2″, 2″, 2 1/2″, 3″, 4″ 
FEMALE TEE  QX58 1/2″, 3/4″, 1″
FEMALE ELBOW QX59 1/2″, 3/4″, 1″
REDUCING TEE  QX60 3/4″X 1/2″, 1″X1/2″, 1″X 3/4″
REDUCING BUSHINE QX61 3/4″X1/2″,  1X 1/2″,  1″X3/4″,  1 1/4″X1″,  1 1/2″ X1″,  1 1/2″ X 1 1/4″,  2″ X 1 1/2″,  2″X 4″,  3″X 4″,  2″X 1″,     2″X1 1/4″,   1 1/2″ X3/4″,  3″X2″, 2″X 3/4″ 
REDUCING COUPLING QX62 3/4″X1/2″, 1X 1/2″,  1″X3/4″,  1 1/4″X1″,      1 1/4″ X 3/4″ ,  1 1/2″X 1 1/4″, 1 1/2″ X1″, 2″ X 1 1/2″, 2″ X 1 1/4″,  2 1/2″ X 2″,  2 1/2″X1 1/2″,  3″ X 2 1/2″, 3″X2″, 4″X3″, 4″ X 2 1/2″, 2″X 1″ 
REDUCING FEMALE ELBOW QX63 3/4″ X 1/2″, 1″ X 1/2″, 1″ X 3/4″ 
REDUCING FEMALE TEE  QX64 3/4″X1/2″, 1X 1/2″,  1″X3/4″
REDUCING BUSHING QX65 3/4″X1/2″,  1″ X1/2″,  1″ X3/4″ 
PLUG QX66 1/2″, 3/4″, 1″, 1 1/4″,  1 1/2″, 2″
PIPE  CLIP  QX67 1/2″, 3/4″, 1″, 1 1/4″, 1 1 /2″, 2″, 3″, 4″
COMPRESSION COUPLING  QX68 1/2″, 3/4″, 1″, 1 1/4″, 1 1/2″, 2″, 2 1/2″, 3″, 4″
UNION  QX69 1/2″, 3/4″, 1″, 1 1/4″, 1 1/2″, 2″ 

3. Our Other Related Products

4. Certificate:

5. Our Factory Picture

Our factory covers an area of 20,000 square CHINAMFG and has fixed assets of 50 million RMB. Our factory has more than 100 employees. It has a mold department, a piping system department, a raw material mixing system, a pelletizing production line, and a pipe extrusion production line. There are 50 injection molding machines with an annual production capacity of 8,000 tons.

6. Applications:

(1) Agricultural irrigation                            (2) Swimming pool

(3) Sewage treatment                                 (4) Water treatment

(5) Piping system                                         (6) Water recycling project

7. About Us

8. FAQ

Our Advantages:

(1) High pressure can stand: PN10, PN16, PN35, PN40; 150psi, 235psi etc, as customers’ request;

(2) Well and high-quality control, within 1% leakage;

(3) Environment-friendly, non-toxic, good looking, and long service life;

(4) Lightweight, easy to handle and transport; 

(5) Soft colors and excellent design, suitable for installation either exposed or hidden;

(6) Wonderful ability in chemical corrosion resistance;

(7) Easy and fast installation, making cost minimized;

(8) Widely used in building, irrigation, industry, and swimming pool;

(9) Small order acceptable;

(10) Customer’s design and logo are welcome.

Why Us?

(1) We provide OEM service and submit Various styles, latest designs to our clients;

(2) We work with big customers in Southeast Asia, Africa, Middle East, North America, South America;

(3) According to the needs of customers in different regions, we match different quality and thickness valves with various styles, so that our customers are very competitive in the market!

(4) Our high quality PVC valve can be consistent with European and American national brand valves!

(5) We have great experience on providing high quality products and most professional service to clients about 10 years more!

(6) Customers choose our products, can mix and match our PVC pipe fittings, PVC butterfly valves, PP Fittings, irrigation products to buy together, so that the customer product line is more abundant, both quality and delivery time are guaranteed.

(7)  We can flexible from China any port export! Welcome you inquiry us!

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reducer coupling

How Do Temperature and Environmental Conditions Affect Reducer Coupling Performance?

The performance of reducer couplings can be influenced by temperature and environmental conditions. Here are some key considerations:

Temperature: Reducer couplings are typically made from materials that can withstand a wide range of temperatures. However, extreme temperatures can affect the coupling’s properties and performance. In high-temperature environments, certain materials may experience thermal expansion, which can impact the coupling’s dimensions and fit. Conversely, in very low temperatures, the materials may become more rigid and prone to cracking or brittleness. When selecting a reducer coupling, it’s essential to consider the temperature range it will be exposed to and choose a material that can handle those conditions.

Corrosive Environments: In corrosive environments, such as those with high humidity or chemical exposure, the materials used in the reducer coupling must be resistant to corrosion. Corrosion can weaken the coupling over time, leading to leaks or failure. Materials like stainless steel or PVC are often preferred for their corrosion resistance in such environments.

UV Exposure: For outdoor applications, UV exposure from sunlight can cause degradation of certain materials over time. UV-resistant materials or protective coatings may be necessary to prevent UV-induced damage.

Pressure and Load: Environmental conditions, such as changes in pressure or loads, can also impact the performance of reducer couplings. High-pressure applications require couplings that can handle the specific pressure ratings, and overloading the coupling beyond its capacity can lead to failure.

Hygiene and Cleanliness: In industries where hygiene is critical, such as food and beverage or pharmaceuticals, reducer couplings used in piping systems should be easy to clean and maintain to prevent contamination.

In summary, the proper selection of materials and design considerations based on the temperature and environmental conditions in which the reducer coupling will operate are crucial to ensuring its optimal performance and longevity. Following manufacturer guidelines and using couplings specifically designed for the intended environment will help maintain the coupling’s functionality and integrity over time.

reducer coupling

Potential Limitations or Drawbacks of Using a Reducer Coupling

While reducer couplings are commonly used and offer advantages in certain applications, they also have some limitations and drawbacks that should be considered:

  • Flow Restrictions: Reducer couplings may create flow restrictions due to the change in pipe diameter, which can lead to increased pressure drop and reduced flow rates in the system.
  • Pressure Loss: When fluid flows through a reducer coupling, there is a pressure loss associated with the change in diameter. This pressure loss can impact the overall system performance, especially in high-pressure applications.
  • Mechanical Stress: The transition from a larger to a smaller pipe diameter in a reducer coupling can cause mechanical stress and turbulence in the fluid flow, potentially leading to fatigue and premature wear in the system.
  • Corrosion and Material Compatibility: If the reducer coupling material is not compatible with the materials of the connected pipes, it can lead to galvanic corrosion and deterioration of the coupling, reducing its lifespan.
  • Space Considerations: Reducer couplings add length to the pipeline due to their tapered design, which may require more space for installation and can be a constraint in compact or crowded installations.
  • Thermal Expansion: Differences in thermal expansion coefficients between the pipe materials and the reducer coupling material can cause stress and potential leaks at the joints during temperature variations.
  • Flow Turbulence: The abrupt change in pipe diameter at the reducer coupling can induce flow turbulence, affecting the efficiency of the fluid transport system.
  • Cost: In some cases, using a reducer coupling may require additional material and labor costs for installation, especially when transitioning between pipes of significantly different diameters.
  • Disassembly Difficulty: In situations where maintenance or repairs are required, disassembling a reducer coupling can be more challenging compared to other types of pipe fittings, particularly if it is permanently welded or glued.
  • Limitation in Transitioning Pipe Materials: Reducer couplings may not be suitable for transitioning between pipes with vastly different materials due to potential corrosion or compatibility issues.

Despite these limitations, reducer couplings remain valuable components for connecting pipes of different diameters in plumbing and piping systems. It is essential to carefully consider the specific requirements and challenges of the application to determine whether a reducer coupling is the best choice or if other types of pipe fittings would be more suitable.

reducer coupling

Types of Reducer Couplings for Various Applications

Reducer couplings come in various types and configurations to suit different plumbing and piping applications. Some of the common types of reducer couplings include:

  • Threaded Reducer Coupling: This type of reducer coupling has external male threads on one end and internal female threads on the other end. It is used for connecting pipes with threaded ends of different sizes.
  • Socket Reducer Coupling: A socket reducer coupling, also known as a solvent-weld reducer coupling, is designed for use with plastic pipes, such as PVC or CPVC. It is used to join pipes with different diameters using solvent cement.
  • Compression Reducer Coupling: Compression reducer couplings are used for connecting pipes with compression fittings. They provide a leak-proof connection and are commonly used in water supply systems.
  • Flanged Reducer Coupling: Flanged reducer couplings have flanges on both ends, and they are used for connecting pipes with flanged ends of different sizes. They are often used in large-scale industrial applications.
  • Push-Fit Reducer Coupling: This type of reducer coupling is designed for quick and easy installation without the need for any special tools. It is commonly used in plumbing systems that utilize push-fit fittings.
  • Expansion Reducer Coupling: Expansion reducer couplings are used in systems that experience thermal expansion and contraction. They allow for the dimensional changes without causing stress on the pipes.

The choice of the right type of reducer coupling depends on the specific application, the materials of the pipes being connected, and the joining method used in the plumbing or piping system. It is essential to select a reducer coupling that provides a secure and reliable connection while ensuring smooth flow transition between pipes of different diameters.

China Hot selling PVC/UPVC off-Centre Big and Small Reducer Drain Pipe Fitting Coupling  China Hot selling PVC/UPVC off-Centre Big and Small Reducer Drain Pipe Fitting Coupling
editor by CX 2024-02-19