UPVC Union
A UPVC union is made from unplasticized polyvinyl chloride (UPVC) that connects two sections of piping while allowing them to be easily separated and rejoined without cutting the pipeline, mainly for maintenance, repair, or replacement purposes. A UPVC Union is a specialized pipe fitting designed to connect two pipes, which allows them to. It is frequently used to construct temporary structures, such as tent supports, and dismantle them when the structure is no longer required. They have a ring in the middle that divides the two ends, making dismantling and maintenance simple.
UPVC Union is made from an unplasticized polyvinyl chloride material that has been precisely developed.A uPVC union consists of three distinct parts, first one is Two Hub Ends which are the pieces of solvent-welded to the ends of pipes, Second one is A Nut which are the large threaded ring that sits in the, middle of pipes, And the thyroid one is an O- ring rubber seal inside the pipe that ensuring a leak -prof connection, when the nut is tight. UPVC unions and UPVC pipe union connectors are pipe fittings that allow two pipes to connect without using a sealant or a traditional bonded coupling.
- Chemical Resistance
- Low Maintenance Requirement
- Low Thermal Conductivity
- Long Service Life
- Easy Installation
- Corrosion Resistance
UPVC Union Details
ID – Inner Diameter
OD – Outer Diameter
WT – Wall Thickness
SL – Socket Length
L – Overall Length
H – Hex Height (typically including nut for tightening)
| Size (Inch) | ID (mm) | OD (mm) | WT (mm) | SL (mm) | L (mm) | H (mm) |
| ½ | 21.64 | 29.10 | 3.73 | 22.23 | 46 | 62 |
| ¾ | 26.97 | 34.79 | 3.91 | 25.40 | 53 | 65 |
| 1 | 33.78 | 42.88 | 4.55 | 28.58 | 69 | 68 |
| 1¼ | 42.55 | 52.25 | 4.85 | 31.75 | 71 | 85 |
| 1½ | 48.72 | 58.88 | 5.08 | 34.93 | 95 | 85 |
| 2 | 60.78 | 71.86 | 5.54 | 38.10 | 115 | 94 |
| 2½ | 73.38 | 88.54 | 7.58 | 45.45 | 125.8 | 101.4 |
| 3 | 89.31 | 97.41 | 8.10 | 48.63 | 146.7 | 107 |
| 4 | 114.76 | 124.19 | 9.43 | 58.15 | 176.2 | 126.35 |
| Parameter | Technical Details |
| Product Name | UPVC Union |
| Material | Unplasticized Polyvinyl Chloride (UPVC) |
| Function | Easy dismantling and re-joining of the pipeline |
| Size Range | 20 mm to 110 mm (¾” to 4″) |
| Pressure Rating | PN 6, PN 10, PN 16 |
| Working Pressure | 6–16 bar @ 27°C |
| End Connections | Socket (Solvent Weld), Threaded (Male/Female), Socket × Threaded |
| Design | 3-piece union (2 ends + union nut) |
| Sealing Type | EPDM / NBR rubber O-ring |
| Operating Temperature | 0°C to 60°C |
| Density | 1.38–1.45 g/cm³ |
| Tensile Strength | 45–55 MPa |
| Surface Finish | Smooth, glossy |
| Chemical Resistance | Resistant to acids, alkalis, and salts |
| Electrical Conductivity | Non-conductive |
| Color | White / Grey |
| Standards | IS 10151, IS 4985, ASTM D2466, DIN 8063 |
| Applications | Chemical, irrigation, chemical lines, water treatment |
- Threaded assembly: Most unions use threaded ends for easy hand-tightening or loosening.
- Chemical resistance: Suitable for use with drinking water and chemical pipelines.
- Reusable: Unlike glued fittings, unions can be reused multiple times.
- Leak-proof seal: Built-in O-ring or rubber gasket ensures tight, secure connections.
| Size (mm / inch) | Pressure Rating (bar) | Pressure Rating (psi) |
| 15 mm / ½” | 16 | 232 |
| 20 mm / ¾” | 16 | 232 |
| 25 mm / 1″ | 16 | 232 |
| 32 mm / 1¼” | 16 | 232 |
| 40 mm / 1½” | 16 | 232 |
| 50 mm / 2″ | 16 | 232 |
| 63 mm / 2½” | 10 | 145 |
| 75 mm / 3″ | 10 | 145 |
| 90 mm / 3½” | 10 | 145 |
| 110 mm / 4″ | 10 | 145 |
| 160 mm / 6″ | 6 | 87 |
| Property | Typical Value / Description |
| Material | Unplasticized Polyvinyl Chloride (UPVC) |
| Density | 1.38 g/cm³ (≈1380 kg/m³) |
| Color | Usually grey or white; varies by manufacturer |
| Tensile Strength | 50–60 MPa |
| Flexural Strength | 80–90 MPa |
| Impact Strength (Izod) | 3–5 kJ/m² at 23 °C (notched) |
| Hardness (Rockwell) | R scale: 100–115 |
| Modulus of Elasticity | 2.5–3.0 GPa |
| Elongation at Break | 20–40% |
| Thermal Conductivity | 0.16–0.19 W/m·K |
| Maximum Operating Temperature | 60 °C (continuous use) |
| Melting Temperature | 212–260 °C (decomposes rather than melts) |
| Chemical Resistance | Excellent for most acids, alkalis, salts; poor for aromatic hydrocarbons, ketones |
| Water Absorption | <0.1% after 24 h immersion |
| Flammability | Self-extinguishing; does not support combustion easily |
| UV Resistance | Moderate; typically needs stabilizers for outdoor use |
Custom Product Manufacturing Available
If you are searching for customized product designs that meet your requirements, don’t worry. Petron Thermoplast also offers custom product manufacturing services to meet the unique needs of various industries. Work with our expert engineers to create custom designs suited for your application.
Benefits of Using UPVC Union
1. Unmatched Durability & Longevity
UPVC union boasts a 50+ year lifespan, outperforming metal pipes prone to rust and corrosion. Unlike iron or steel, uPVC resists environmental stressors like UV rays, chemicals, and soil acidity.
2. Corrosion & Chemical Resistance
Traditional UPVc unions lose integrity due to rust and chemical reactions. UPVC unions remain inert, even when transporting acidic or alkaline fluids.
3. Cost-Effective Installation & Maintenance
UPVC unions are 50% lighter than others, reducing labor and transportation costs. Their modular design allows for quick, glue-joint installations without welding.+0
4. Smooth Interior Surface Reduces Blockages
The ultra-smooth inner walls of UPVC union minimize friction, preventing sediment buildup and scaling. This ensures consistent water flow and lowers pump energy costs.
5. Environmentally Friendly
UPVC union is 100% recyclable and produces fewer carbon emissions during manufacturing than concrete or metal.
6. Safe for Drinking Water
UPVC union pipes ensure no harmful chemicals leach into drinking water. The World Health Organization (WHO) recognizes UPVC as a safe material for potable water systems.
7. Thermal Insulation Properties
UPVC Union low thermal conductivity prevents heat loss in hot water systems, improving energy efficiency.
8. Fire Resistance
UPVC Union pipes are self-extinguishing and meet stringent fire safety standards, reducing risks in residential and commercial buildings.
Types and Uses of UPVC Union
Socket (Solvent Weld) Union
- Both ends have socket union connections.
- UPVc unions are joined using solvent cement.
Threaded Union
- One or both ends have male/female threads (BSP/NPT)
Easy to assemble and disassemble without adhesives
Socket × Threaded Union (Hybrid)
- One end is a socket, the other threaded.
Flanged Union
- Uses flanges and bolts to connect
- Allows for easy disassembly in larger diameter pipelines
Why Choose Petron Thermoplast?
Petron Thermoplast has been a leading name in the chemical industry. We are offering certified, durable, and reliable UPVC union solutions for all kinds of water, fluid, and chemical systems. You can worry free investing in Petron Thermoplast’s UPVC unions, ensuring the performance, longevity, and peace of mind.
Long-lasting performance
Hassle-free maintenance
Leak-proof construction
Affordable alternative to metal fittings
Corrosion and chemical resistance
Easy to install without special tools
UPVC Pipe Fittings
We offer UPVC Pipe Fittings products in all standard sizes and provide complete customization options to meet your specific project requirements across our entire product range.
