China Professional UPVC Coupling with Good quality

Product Description

Unplasticised Polyvinyl Chloride, also commonly referred to as uPVC or PVC-U, is a highly regarded piping system that is suitable within the water treatment, chemical processing and similar industries.
uPVC Pipe Fittings are an extremely versatile products that has uses ranging from drinking water to highly corrosive chemical applications. The product contains UV stabilising additives and thermal properties which ensure that it is suitable for both interior and exterior environments. Its smooth texture also ensures that there is limited build up of materials or scale from the liquids during operations.
SUNPLAST uPVC solvent weld fittings are exclusively available in full range of nominal metric diameters from 20mm to 400mm, with a normal working pressure of PN10 bars & PN16 bars, and are manufactured and tested in accordance with the domestic standard GB/T10002.2-2003, at the same time, they can also comply to international standards of ISO 4422-3:1996; ISO 1542-3:2009.
About uPVC Coupler / Coupling
uPVC couplers / Couplings are 1 of the most simple (and inexpensive) types of uPVC pipe fittings, which are used for the connection pipe to pipe in the same outer diameter.
SUNPLAST uPVC Coupler / Coupling can be supplied in a full sizes from dn20mm to 400mm, with a normal working pressure of PN10 bars for water (uPVC Pipe Coupling with small diameter dn20mm~dn110mm can also be supplied in PN16 bars for water). The fittings have socket ends, and allow to connect 2 uPVC pipes by solvent weld.
More brief details as below:

Product uPVC Coupler, uPVC Coupling, PVC Coupling, uPVC Pipe Coupling, uPVC Solvent Coupling
Specification  DN20~DN400mm
Pressure ratings  PN10 & PN16
Material Unplasticized polyvinyl chloride
Manufacturing Process Injection molded
Color Grey, Blue, White, or as per customers request.
Manufacturing Standard GB/T10002.2-2003, ISO 4422-3:1996, ISO 1542-3:2009, DIN 8062
Samples available  Yes, samples are available, but charged.
Packing method  Cartons
MOQ  Negotiable 
Customized Logo available
(OEM Service)
For small quantity of order, customer logo can be marked on the fittings by laser marking or sticker.
For big quantity of order, customer logo can be embossed on the fittings.
Production lead time  Mass stock available for regular sizes
About 10 days for a 20ft container, 20 days for a 40ft container
Warranty time  5 years for normal use 
Payment term  T/T, L/C, DP, Western Union, or negotiable 
FOB loading port  HangZhou/ZheJiang China 
Place of origin  HangZhou, China 

Product Specifications
uPVC Coupling Fittings: available from dn20mm to dn400mm
Pressure: PN10 bars & PN16 bars
Color: Grey, Blue, White, or as per customer request.


D0 d1 d2 d T L
20 24.80 20.24 19.96 19.00 17.00 36.00
25 29.90 25.24 24.95 24.00 19.50 41.30
32 37.40 32.25 31.95 31.00 23.00 48.10
40 47.00 40.28 39.95 39.00 27.00 56.60
50 56.50 50.33 49.94 49.00 32.00 67.00
63 70.50 63.34 62.93 62.00 38.50 81.00
75 83.30 75.35 74.93 73.50 44.50 93.00
90 100.00 90.38 89.93 88.50 52.00 107.60
110 119.84 110.42 109.92 108.00 62.00 128.30
125 136.30 125.52 124.93 123.00 69.50 147.20
140 153.50 140.58 139.88 138.00 77.00 163.60
160 174.70 160.62 159.87 158.00 87.00 183.30
180 202.50 180.81 179.91 178.50 97.00 203.50
200 218.90 200.90 199.85 197.00 107.00 217.00
225 245.80 226.02 224.83 221.00 119.50 245.00
250 269.80 251.15 249.41 247.00 132.00 279.00
280 314.80 281.46 280.16 278.00 147.00 299.50
315 343.70 316.55 315.05 312.00 165.00 343.00
355 384.60 356.63 355.03 326.00 183.50 373.00
400 430.70 401.60 400.00 398.50 208.00 423.00

(Noted: the technical data is just for reference, some data may change, if you need exact data, then please contact us directly)

uPVC Pipe Fittings CZPT Can Provide
As a integrated manufacturer who engaged in uPVC pipe fittings over 10 years, CZPT has developed a wide range of uPVC products with CZPT performance & durability, all customers can find the best solution of fittings for their uPVC pipeline systems in SUNPLAST.
SUNPLAST uPVC solvent weld fittings can be supplied in a diameter ranging from 20mm to 400mm in PN10 bars & PN16 bars, which are be comprised of the regular types: uPVC coupling, uPVC 90 degree elbow, uPVC 45 degree elbow, uPVC Tee, uPVC Union, uPVC Reducer, uPVC Clamp Saddle, uPVC Repair Saddle, uPVC Ball Valve, uPVC flange…etc.

Benefits Of uPVC Pipe Fittings
uPVC solvent fittings have become the most common accessories for uPVC pipe, a number of performance benefits as below:
Easy to install: uPVC solvent weld fittings are very easy to install, no special tools or machine, just with inexpensive tools and cleaner / glue
Excellent chemical resistance: uPVC pipe fittings are resistant to many acids, alkalis, bases and salts.
Wide temperature rating of 0~60ºC.
UV resistant / stabilised: uPVC fittings contains UV stabilising additives, which allow for outdoor use.
Excellent corrosion resistance: uPVC pipe fittings don’t scale, pit or rust.
Smooth interior walls provide a high consistent flow rate and low friction loss.
Environment-friendly: uPVC Pipe Fittings can be recycled.
Impact Strength: Under normal conditions, uPVC pipe fittings possess relatively high resistance to impact damage when compared to the fittings made from clay, concrete and most other conventional material.

Manufacturing Facilities
SUNPLAST is a ISO9001 certificated manufacturing factory. As a premier manufacturer of uPVC fittings, the factory has introduced advanced production injection machines and test equipment. All product strictly in compliance with national standards and international standards.
Quality Control
SUNPLAST always sticks to the managing guideline of “manufacturing excellence”, and commits to provide our customers the uPVC fittings on best quality. All fittings meet the highest quality requirements as stipulated in ISO9001, ISO14000:14001 guidelines and our stringent quality control system.
To guarantee the uPVC fittings meet the highest quality level as per standard, besides of using the top quality raw material, CZPT has been strictly executing the quality system of ISO9001:2000, and each piece of fittings have to pass our strict internal quality control before it is released to our customers.
SUNPLAST company has built a professional testing laboratory owning a complete testing equipment, which is certificated by national testing organization.
Packing & Shipment
SUNPLAST is a premier manufacturer of uPVC pipe fittings in China, and our products have been exporting to more than 40 countries all over the world.
SUNPLAST commits to provide the best quality uPVC pipe fittings to all customers in worldwide, and we look CZPT to becoming your reliable partner for uPVC pipe fittings.

* Whats the main difference between uPVC pipe fittings & PVC pipe fittings?
A: There is only 1 difference between PVC and uPVC and that is that PVC contains BPA and phthalates, which are 2 plasticizers that make it more flexible. The “u” in uPVC stands for “unplasticized,” and because it doesn’t have these extra materials, uPVC is often called rigid plastic.
Because of its rigidity, uPVC is a better construction material than PVC. The plasticizing materials in PVC toxic, although it is very low, so PVC pipes & fittings are undesirable for transporting residential water for drinking. uPVC pipes & fittings don’t include any toxic plasticizers, so they are suitable for drinking water transportation.
* Whats the max. Working pressure of uPVC solvent weld fittings? How about the max. Working temperature?
A: SUNPLAST uPVC solvent weld fittings are designed and manufactured to GB/T10002.2-2003, ISO 4422-3:1996, ISO 1542-3:2009 standards and rated for a maximum internal pressure of PN10 bars at 20ºC for water supply, some small diameter dn20~110mm can also be supplied in PN16 bars.
The uPVC pipe fittings are suitable for COLD water only, the maximum recommended operating temperature is 60ºC.
* Are uPVC pipe fittings UV-resistant?
A: Yes, uPVC pipe fittings contain UV stabilizing additives and thermal properties which allow to be outdoor use.
* Whats the solvent weld process for uPVC pipes & uPVC solvent weld fittings?
A: To install the uPVC pipes & solvent weld fittings, there are several steps to follow:
1). Cut the pipe perpendicular to its axis to obtain a clean square section, and chamfer the outer edges of the pipe in order to ensure that it enters the socket of the fitting at an angle of 15°.
2). Measure the depth of the socket of the uPVC solvent weld fitting to the internal shoulder and mark
the corresponding distance on the end of the pipe. Using an clean paper towel or applicator soaked in Cleaner-Primer, remove any traces of dirt or grease from the outer surface of the pipe for the entire cementing length. Repeat the same operation on the internal surface of the socket of the fitting, leaving the surfaces softened. Leave the surfaces to dry for a few minutes before applying the solvent cement.
3). Apply the solvent cement in a uniform manner longitudinally over both parts to be assembled (outer surface of the pipe and internal coupling surface of the fitting) using an applicator or suitably sized coarse brush. The solvent cement must be applied along the entire length of the joining surface of both the pipe and the fitting.
4). Fully insert the pipe into the fitting immediately and without any rotation. Only after this operation will it be possible to slightly rotate both ends (max. 1/4 of a turn between pipe and fitting). This rotation movement will render the layer of applied solvent cement more uniform.
5). The pipe must be inserted in the fitting as soon and as quick as possible (after no more than 20-25 seconds is recommended). Immediately after fully inserting the pipe in the fitting, apply pressure to the joined parts for a few seconds. Then use crepe paper or a clean cloth to remove any excess solvent cement from the outer surfaces, and from internal surfaces where possible.

Why Choose Us?
 Rich experience on manufacturing uPVC pipe fittings over 10 years, we are an expert in this industry.
 Full product range available, you will always find the right solution here.
 Strong after-sale term supports to provide professional guide for installation.
 By using top quality raw material, with long warranty time on quality.
 Short lead time to satisfy your urgent need request.
 Quick reply for your inquiries within 12 hours.
 OEM service available to support a good sale in customers’ market.

Contact Us
If you have any requirements on uPVC fittings, or any question on our fittings, please contact us freely. CZPT has well trained staff who are available to address your needs and provide technical support to all sectors when needed.

Material: PVC
Hardness: Hard Fittings
Type: Thermoplastic Pipe Fittings
Color: Darkgray or Light Gray or Blue
Hollow: Solid
Shape: Regular Shape
US$ 5/Piece
1 Piece(Min.Order)

Request Sample



Customized Request


What Is a Coupling?

A coupling is a device that connects two shafts together. It transmits power from one to the other and is used to join rotating equipment. It can also allow for some degree of misalignment and end movement. It is used in mechanical engineering and manufacturing. To learn more about couplings, read this article.
Mechanical connection between two objectsThe present invention relates to a method and assembly for forming a mechanical connection between two objects. The methods of this invention are suitable for connecting both solid and hollow objects. For example, the method can be used to make mechanical connections between two cylinders. This method is particularly useful for connecting two cylinders that are positioned near each other.

Absorbs vibration

A coupling insert is a part of a vehicle’s drivetrain that absorbs vibrations. These inserts are designed to prevent couplings from moving out of phase. However, the coupling inserts themselves can wear out and need to be replaced. Universal joints are an alternative if the coupling is out of phase by more than one degree. In addition, internal bearings in the coupling need to be lubricated and replaced when they begin to show signs of wear.
Another embodiment of the invention includes a flexible coupling 25 that includes rearwardly-extending lugs that extend toward the coupling member 23. These lugs interdigitate with corresponding lugs on the coupling member 23. They are spaced circumferentially. A first elastic member 28 is interposed between lugs 26 and 27, and is adapted to yield in a counterclockwise direction. As a result, it absorbs torsional vibrations.

Blocks heat transfer

Thermal coupling occurs when a solid block is thermally coupled to the air or fluid passing through it. The amount of heat transferred through a solid block depends on the heat transfer coefficients of the materials. This paper presents a numerical model to understand how heat transfers through different block materials. This work also describes the thermal resistance network for a one-dimensional block.
In some cases, thermal coupling increases the heat transfer mechanism. As illustrated in FIG. 1D, a heatpipe coupler 112 couples two heatpipes 110-1 and 110-2. This configuration allows the pipes to be coupled to the heat source and to the condenser. In addition, the heat pipe couplers may have bellows at the ends to help facilitate linear motion.
Thermal coupling is achieved by ensuring that at least one block is made of a material with a lower thermal expansion coefficient than the annulus. Ideally, the block’s mean thermal expansion coefficient is at least twenty percent lower than the annulus’s mean thermal expansion coefficient. This ensures that the thermal coupling between the two parts is as efficient as possible.
Another type of thermal coupling is achieved by using flexible elements. These are often washers or springs. These components allow the blocks to maintain physical contact with the post 55, which means that the heat transfer is more efficient even at higher temperatures. The flexibility of these elements also makes it possible to choose an element that will not impede assembly.

Protects rotating equipment

A reliable, long-lasting coupling system can reduce the risk of damage to rotating equipment. Designed to protect against torque overload and wear, Voith torque-limiting couplings provide outstanding safety and reliability. As a result, they can deliver maximum performance and minimize equipment downtime. In addition to their long-term benefits, these solutions are ideal for applications where safety and reliability are of paramount importance.
A good coupling provides many advantages, including the ability to transmit power, compensate for axial movement, and absorb shock. It is essential to choose the proper coupling for your application based on the basic conditions of your rotating equipment. For example, if you have two shafts with parallel rotation axes, you should choose a parallel coupling. Otherwise, you should use an angular coupling.
Torque-limiting couplings can also provide protection for rotating equipment by disengaging at a specific torque level. This protects the drive shaft from undergoing catastrophic failure. Torque limiters are particularly helpful for high-value equipment. By preventing catastrophic failure, you can avoid expensive repairs and minimize equipment downtime.
Coupling guards are easy to install and provide effective protection for rotating equipment. These covers are made of sheet metal bent to fit over the shaft. They are durable and easy to remove when necessary. This type of guard can prevent employees from catching their hands, tools, or loose clothing on motor coupling components.
China Professional UPVC Coupling   with Good quality China Professional UPVC Coupling   with Good quality
editor by CX 2023-04-27