CPVC FLANGE
A CPVC Flange is a pipe fitting made from Chlorinated Polyvinyl Chloride (CPVC) that is used to connect pipes, valves, pumps, or other equipment in a piping system. It provides a removable and secure joint by using bolts, nuts, and a gasket between two flange faces to ensure a leak-proof connection. CPVC flanges are widely used in chemical processing, water treatment, and industrial piping systems because they offer excellent corrosion resistance, high temperature tolerance, and long service life.
CPVC flange comes in a variety of shapes and sizes, and they are easy to mix. It is a method of connecting pipes, valves, pumps and other equipment to form a piping system, but they have different properties and are thus better suited for different uses: water pumps, uses of valves and mainly uses the piping system. A CPVC Flange is designed to connect CPVC piping systems with valves, pumps, and other pipeline components. It is manufactured to provide strong, leak-proof, and corrosion-resistant connections in industrial and water distribution systems.
- Chemical Resistance
- Low Maintenance Requirement
- Low Thermal Conductivity
- Long Service Life
- Easy Installation
- Corrosion Resistance
CPVC FLANGE Details
Size (Inch) → Nominal Pipe Size (in inches)
ID → Inner Diameter
OD → Outer Diameter
WT → Wall Thickness
SL → Socket Length
H → Height
L → Length
PCD → Pitch Circle Diameter
| Size (Inch) | ID (mm) | OD (mm) | WT (mm) | SL (mm) | H (mm) |
| ½” | 21.64 | 29.10 | 3.73 | 22.23 | 42 |
| ¾” | 26.97 | 34.79 | 3.91 | 25.40 | 58 |
| 1″ | 33.78 | 42.88 | 4.55 | 28.58 | 66 |
| 1¼” | 42.55 | 52.25 | 4.85 | 31.75 | 80 |
| 1½” | 48.72 | 58.88 | 5.08 | 34.93 | 90 |
| 2″ | 60.78 | 71.86 | 5.54 | 38.10 | 115 |
| 2½” | 73.56 | 87.58 | 7.01 | 44.45 | 132 |
| 3″ | 89.50 | 113.74 | 7.62 | 47.63 | 150 |
| 4″ | 114.99 | 132.11 | 8.56 | 57.15 | 182 |
| 6″ | 153.88 | 168.10 | 7.11 | 77.25 | 250 |
| Property | Details |
| Product Type | CPVC Flange (Slip-on / Threaded / Spigot / Blind) |
| Function | Connects pipes, valves, pumps using bolted joint |
| Material | CPVC (Chlorinated Polyvinyl Chloride) |
| Size Range | ½” to 12” (DN15–DN300) |
| Flange Type | Slip-on, Van Stone, Fixed, Threaded, Blind |
| Connection Type | Solvent weld / Threaded / Flanged (bolted) |
| Pressure Rating | Up to 10 bar (150 psi) at 23°C |
| Temperature Range | 0°C to 93°C |
| Bolt Pattern | As per ANSI B16.5 / DIN standards |
| Standards | ASTM F439, ASTM D1784, IS 15778 |
| Color | Light grey / beige |
| Installation Method | Bolted connection with gasket |
| Backing Ring | Optional (metal/plastic for strength) |
| Applications | Chemical plants, water systems, HVAC, industrial piping |
| Density / Specific Gravity | ~1.50 – 1.55 g/cm³ |
| Tensile Strength | ~50 – 56 MPa |
| Flexural Strength | ~90 – 110 MPa |
| Modulus of Elasticity | ~2400 – 3000 MPa |
| Impact Strength | ~1.5 – 2.0 ft-lb/in (Izod) |
| Hardness | Rockwell ~120 |
| Water Absorption | ≤ 0.04% |
| Heat Deflection Temperature | ~100–105°C |
| Thermal Expansion | ~3.7 × 10⁻⁵ in/in/°F |
| Thermal Conductivity | Low (good insulation) |
- Corrosion Resistant
CPVC flanges are highly resistant to corrosion from chemicals, acids, and salts, ensuring durability in harsh environments. - High Temperature Capability
They can withstand temperatures up to approximately 93°C (200°F), making them suitable for hot water and industrial fluid systems. - Lightweight Construction
CPVC flanges are lighter than metal flanges, making transportation, handling, and installation easier. - Strong and Leak-Proof Joint
When used with proper bolts and gaskets, CPVC flanges provide a secure and leak-free connection. - Smooth Inner Surface
The smooth internal surface reduces friction and helps maintain efficient fluid flow. - Easy Installation and Maintenance
They can be installed easily using solvent cement or threaded connections, and they allow quick disassembly for maintenance. - Chemical Resistance
CPVC material provides excellent resistance to many industrial chemicals, making it suitable for chemical processing applications. - Long Service Life
Due to its durability and resistance to scaling and corrosion, CPVC flanges have a long operational lifespan in piping systems.
| Temperature | Pressure Rating |
| 23°C (73°F) | 150 psi |
| 38°C (100°F) | 120 psi |
| 49°C (120°F) | 100 psi |
| 60°C (140°F) | 80 psi |
| 82°C (180°F) | 50 psi |
| 93°C (200°F) | 30 psi |
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 FLANGE
1.Excellent Corrosion Resistance
CPVC flanges resist corrosion from chemicals, acids, and salts, making them ideal for harsh environments.
2. High Temperature Resistance
They can handle higher temperatures compared to many other plastic piping materials, making them suitable for hot fluid systems.
3. Lightweight
CPVC flanges are much lighter than metal flanges, which makes handling, transportation, and installation easier.
4. Easy Installation
They are easy to install using solvent cement connections and bolting, reducing installation time and labor costs.
5. Leak-Proof Connection
When used with proper gaskets and bolts, CPVC flanges provide a strong and secure leak-free joint.
6. Low Maintenance
Due to their corrosion resistance and durability, CPVC flanges require very little maintenance over time.
7. Long Service Life
CPVC material is highly durable, ensuring a long operational life in piping systems.
8. Cost-Effective
Compared to metal flanges, CPVC flanges are generally more economical in both material and maintenance costs.
Types of CPVC FLANGE
1.Slip-On CPVC Flange
This type of flange slides over the pipe and is bonded using solvent cement. It is commonly used for simple and reliable pipe connections.
2. Van Stone CPVC Flange (Lap Joint Flange)
A two-piece flange consisting of a stub end and a loose backing flange. It allows easy alignment of bolt holes and is widely used in CPVC piping systems.
3. Blind CPVC Flange
A solid flange without a center hole, used to close the end of a pipeline or isolate a section of the piping system.
4. Threaded CPVC Flange
This flange has internal threads that allow it to connect to threaded pipes or fittings without solvent cement.
5. Socket Weld CPVC Flange
Designed with a socket connection where the pipe is inserted and bonded, providing a strong and secure joint.
Applications of CPVC FLANGE
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 specialises in manufacturing world-class sewerage & drainage systems for commercial applications, industrial, and infrastructure projects. As a leading CPVC Flange manufacturer in India, Petron Thermoplast is the world’s largest supplier and the inventors of CPVC compounds give us a sharp competitive edge amongst flange companies. As we exclusively bring Petron thermoplast to the market, the first choice globally for potable chemical applications. Petron Thermoplast’s robust distribution network, combined with best-in-class technology, is set to create a strong & sustainable partnership in the chemical Industry.
