CPVC Union
A CPVC Union is a pipe fitting made from Chlorinated Polyvinyl Chloride (CPVC) that connects two CPVC pipes, allowing for easy disconnection and reconnection without cutting the pipe. It consists of three main parts: a nut, a female end, and a male end, which are joined together to create a secure and leak-proof connection.CPVC unions are commonly used in systems, water supply lines, and industrial piping where frequent maintenance, repair, or replacement of pipeline components is required. CPVC union white pipe and fittings are materials that have been properly developed. These pipes are abrasion-resistant, have high mechanical strength, and are tough and durable, making them capable of withstanding weather conditions.
CPVC Union Manufacturer, like couplings, joins objects together, but they are a less permanent option that can be easily destroyed. Cpvc unions are often used to build temporary constructions, such as tent supports, and are dismantled when the structure is no longer needed. They have a ring in the middle that divides the two ends, making dismantling and maintenance simple.
- Chemical Resistance
- Low Maintenance Requirement
- Low Thermal Conductivity
- Long Service Life
- Easy Installation
- Corrosion Resistance
CPVC Union Details
ID-1 – Larger Inner Diameter
ID-2 – Smaller Inner Diameter
SL – Socket Length
L – Length
H – Height
| 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 |
| Category | Parameter / Property | Specification / Technical Details |
| Product Overview | Product Name | CPVC Union (Three-piece design: Nut, Male End, Female End) |
| Connection Type | Socket / Slip or Threaded | |
| Size Range | ½ inch to 4 inch (15 mm to 100 mm) | |
| Color | Light Yellow / Cream | |
| Performance | Temperature Resistance | 0 to 100°C |
| Pressure Compatibility | Suitable for SDR-11 / Schedule 40 CPVC piping systems | |
| Standards | ASTM D2846, ASTM F439 | |
| Chemical Resistance | Resistant to acids, bases, and salts | |
| Physical Properties | Density | 1.45 – 1.58 g/cm³ |
| Water Absorption | Less than 0.1% | |
| Mechanical | Tensile Strength | 50 – 60 MPa |
| Flexural Strength | 90 – 100 MPa | |
| Impact Strength | High impact resistance | |
| Hardness | Rockwell Hardness R110 – R120 | |
| Thermal | Thermal Conductivity | 0.14 W/m·K |
| Expansion Coeff. | 6.2 × 10⁻⁵ mm/mm/°C | |
| Installation | Joining Method | Solvent Cement or Threaded assembly |
| Application | Chemical systems, water supply, industrial piping |
- Three-Piece Design
CPVC unions are typically composed of three parts: a nut, a male end, and a female end, which facilitate easy assembly and disassembly. - Easy Maintenance
The union can be disconnected without cutting the pipe, making repairs and maintenance simple. - Leak-Proof Sealing
Designed with a sealing surface or gasket that ensures a tight and reliable leak-free connection. - High Temperature Resistance
CPVC handles temperatures from -20°C to 100 °C, making it suitable for hot and cold water systems. - Corrosion Resistance
The CPVC material resists rust, corrosion, and scaling, ensuring long service life. - Chemical Resistance
CPVC unions are resistant to many acids, salts, and alkalis used in industrial applications. - Lightweight Construction
They are lighter than metal fittings, making transportation and installation easier. - Smooth Internal Surface
The smooth inner walls reduce friction and improve fluid flow efficiency. - Strong and Durable
CPVC unions have good mechanical strength and provide reliable long-term performance. - Wide Size Availability
Available in various sizes to suit different CPVC piping systems.
| Pipe Size (Inch) | Pipe Size (mm) | Pressure Rating (psi) | Pressure Rating (bar) | Maximum Temperature |
| ½” | 15 mm | 400 psi | 27.6 bar | Up to 93°C |
| ¾” | 20 mm | 400 psi | 27.6 bar | Up to 93°C |
| 1″ | 25 mm | 370 psi | 25.5 bar | Up to 93°C |
| 1¼” | 32 mm | 320 psi | 22.0 bar | Up to 93°C |
| 1½” | 40 mm | 300 psi | 20.7 bar | Up to 93°C |
| 2″ | 50 mm | 280 psi | 19.3 bar | Up to 93°C |
| 2½” | 65 mm | 230 psi | 15.8 bar | Up to 93°C |
| 3″ | 80 mm | 200 psi | 13.8 bar | Up to 93°C |
| 4″ | 100 mm | 180 psi | 12.4 bar | Up to 93°C |
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 CPVC Union
Easy Disconnection and Reconnection
CPVC unions enable pipes to be easily separated and reconnected without cutting the pipe, simplifying maintenance.
Leak-Proof Connection
The union nut and sealing arrangement provide a tight, reliable, and leak-free joint.
Corrosion Resistance
Made from CPVC material, unions resist rust, corrosion, and scaling.
High Temperature Resistance
CPVC unions can withstand temperatures up to 93°C, making them suitable for hot and cold water systems.
Chemical Resistance
They are resistant to many chemicals such as acids, alkalis, and salts, which makes them suitable for industrial applications.
Lightweight and Easy Handling
CPVC unions are lighter than metal fittings, making installation and handling easier.
Durable and Long Lasting
CPVC material provides high durability and long service life.
Smooth Flow Characteristics
The smooth internal surface reduces friction and prevents scale buildup.
Low Maintenance
Due to their corrosion resistance and robust construction, CPVC unions require minimal maintenance.
Cost-Effective
CPVC unions offer an economical solution compared to metal union fittings due to lower installation and maintenance costs.
Types of CPVC Union
Socket (Slip) CPVC Union
This type has socket ends where the pipes are inserted and joined using CPVC solvent cement for a strong and permanent connection.
Threaded CPVC Union
This union has threaded ends that allow connection with threaded pipes or fittings, making installation and removal easier.
Socket × Threaded CPVC Union
One threaded connection and the other connection, allowing connection between different pipe fittings.
True Union CPVC Union
This type is designed with a removable central nut that allows easy disassembly for maintenance or replacement.
Heavy Duty CPVC Union
Designed for industrial applications, this type provides higher strength and durability for demanding piping systems.
Applications of CPVC Union
Process Industry
High Purity Applications
Electronic Industry
Electrical Industry
Semi-conductors Industry
Pharmaceutical Industry
Solar power panels
Sugar Industry
Paper & Pulp Industry
Nuclear Power Industry
Automotive Industry
DI water plants
Why Choose Petron Thermoplast?
Petron Thermoplast is one of the trusted CPVC Union manufacturers and suppliers in India, delivering high-performance mechanical splicing solutions for civil and structural engineering sectors. Our CPVC Union is crafted using certified materials and advanced machining processes to be strong and reliable, ensuring the connections in every project. Precision-engineered CPVC Union, Custom sizes and bulk order availability, Competitive prices with fast delivery, Expert technical support for installation.
