CPVC Pneumatic Butterfly Valve
A CPVC Pneumatic Butterfly Valve is a quarter-turn flow control valve made from CPVC (Chlorinated Polyvinyl Chloride) material and operated automatically using a pneumatic (air-powered) actuator. It is designed to regulate, start, or stop the flow of liquids and corrosive chemicals in industrial piping systems. The CPVC Pneumatic Butterfly Valve provides excellent resistance to corrosion, chemicals, and high temperatures, and rotates 90° to open or close the flow. The CPVC Pneumatic Butterfly Valve uses compressed air to control the valve position automatically to ensure leak-proof operation.
A CPVC Pneumatic Butterfly Valve is used for fast control and ON/ OFF operations, and size range from DN 40 up to DN 200 mm, series DIN 3202 K2 and ISO 5752 Medium series 25. Interchangeable primary liner in elastomer EPDM, FPM, or NBR. The working pressure is 16 bar at 20°C. The CPVC Pneumatic Butterfly Valve produced on the actuator body is made of a special aluminium alloy for applications in aggressive environments.
- Chemical Resistance
- Low Maintenance Requirement
- Low Thermal Conductivity
- Long Service Life
- Easy Installation
- Corrosion Resistance
CPVC Pneumatic Butterfly Valve Details
B2: Bottom height from the center of the valve.
B4: Top height from the center of the valve to the top of the actuator/handle.
DN: Nominal Diameter (the internal diameter of the pipe connection).
E: Width of the upper actuator or gear housing.
f: Diameter of the mounting/bolt holes.
H: Total width of the valve body.
ØA min: Minimum diameter of the bolt hole circle.
ØA max: Maximum diameter of the bolt hole circle.
| D | DN | PN | A min | A max | B2 | E | f | H | B4 | U |
| 50 | 40 | 16 | 95 | 109 | 60 | 86 | 19 | 132 | 209 | 4 |
| 63 | 50 | 16 | 115 | 125.5 | 70 | 86 | 19 | 147 | 215 | 4 |
| 75 | 65 | 10 | 128 | 144 | 80 | 86 | 19 | 165 | 222 | 4 |
| 90 | 80 | 10 | 145 | 160 | 93 | 94 | 19 | 185 | 253 | 12 |
| 110 | 100 | 10 | 165 | 190 | 107 | 104 | 19 | 211 | 110 | 8 |
| 125 | 140 | 10 | 204 | 215 | 120 | 104 | 23 | 240 | 297 | 8 |
| 160 | 150 | 10 | 230 | 242 | 134 | 120 | 23 | 268 | 325 | 8 |
| 225 | 200 | 10 | 280 | 298 | 161 | 134 | 23 | 323 | 399 | 8 |
| 280 | 250 | 10 | 350 | 350 | 210 | 163 | 22 | 405 | 453 | 12 |
| 315 | 300 | 8 | 400 | 400 | 245 | 163 | 22 | 475 | 510 | 12 |
| Parameter | Details |
| Valve Type | Butterfly Valve (Quarter-turn) |
| Actuation | Pneumatic (Double Acting / Spring Return) |
| Body Material | CPVC (Chlorinated Polyvinyl Chloride) |
| Disc Material | CPVC / PP / PVDF (depending on design) |
| Seat Material | EPDM / FKM (Viton) |
| Size Range | 2” to 12” (DN50 to DN300) |
| Pressure Rating | PN6 / PN10 (up to 10 bar) |
| Temperature Range | 0°C to 90°C |
| Connection Type | Wafer / Lug Type |
| End Standard | ANSI / DIN / JIS |
| Operation Time | Fast (typically 1–2 seconds) |
| Air Supply Pressure | 4 to 8 bar |
| Control Type | On/Off or Modulating (with positioner) |
| Mounting | ISO 5211 standard mounting pad |
| Leakage Class | Bubble-tight shutoff |
| Flow Control | Suitable for throttling and isolation |
| Material Type | Thermoplastic (CPVC) |
| Density | 1.45 – 1.58 g/cm³ |
| Tensile Strength | 50 – 70 MPa |
| Flexural Strength | 80 – 100 MPa |
| Impact Strength | High (good toughness) |
| Thermal Conductivity | Low (0.14 W/m·K approx.) |
| Coefficient of Thermal Expansion | 6–7 × 10⁻⁵ /°C |
| Flammability | Self-extinguishing |
| Chemical Resistance | Excellent (acids, alkalis, salts) |
| Corrosion Resistance | Excellent (non-metallic body) |
| UV Resistance | Moderate (requires protection for outdoor use) |
1. Corrosion-Resistant Body
Manufactured from CPVC (Chlorinated Polyvinyl Chloride), offering excellent resistance to acids, alkalis, and harsh chemicals.
2. Pneumatic Actuation
Operated using compressed air for automatic and remote control of the valve.
3. Quarter-Turn Operation
Requires only 90° rotation for full open or close, ensuring quick response time.
4. Lightweight Construction
Much lighter than metal valves, making installation easier and reducing structural load.
5. High Temperature Resistance
Suitable for applications up to approximately 90°C.
6. Leak-Proof Sealing
Equipped with EPDM, PTFE, or Viton seats to ensure tight shut-off and prevent leakage.
7. Bi-Directional Flow
Can operate effectively in both flow directions.
8. Low Pressure Drop
Streamlined disc design ensures smooth flow with minimal resistance.
9. Compact Design
Requires less installation space compared to other automated valves.
10. Low Maintenance
Non-metallic construction prevents rust and scaling, reducing maintenance requirements.
11. ISO Mounting Compatibility
Designed to fit standard ISO actuator mounting systems for easy automation integration.
12. Suitable for Hazardous Areas
Pneumatic operation is safe for explosive or flammable environments.
| Valve Size (Inch) | Valve Size (DN) | Max Pressure @ 25°C | Max Pressure @ 60°C | Max Pressure @ 90°C |
| 1½” | DN40 | 16 Bar | 10 Bar | 6 Bar |
| 2” | DN50 | 16 Bar | 10 Bar | 6 Bar |
| 2½” | DN65 | 16 Bar | 10 Bar | 6 Bar |
| 3” | DN80 | 16 Bar | 10 Bar | 6 Bar |
| 4” | DN100 | 16 Bar | 10 Bar | 6 Bar |
| 5” | DN125 | 10 Bar | 8 Bar | 5 Bar |
| 6” | DN150 | 10 Bar | 8 Bar | 5 Bar |
| 8” | DN200 | 10 Bar | 6 Bar | 4 Bar |
| 10” | DN250 | 6 Bar | 5 Bar | 3 Bar |
| 12” | DN300 | 6 Bar | 5 Bar | 3 Bar |
Based on Actuator Type
| Type | Description | Application |
| Single Acting (Spring Return) | Uses air to open/close and spring to return to default position | Emergency shut-off systems (Fail-Safe) |
| Double Acting | Uses air pressure for both opening and closing | Continuous industrial operations |
Based on Body Design
| Type | Description | Installation Method |
| Wafer Type | Compact design fitted between two pipe flanges | Space-saving installations |
| Lug Type | Threaded inserts for bolting directly to flanges | Easy maintenance and line isolation |
| Flanged Type | Full flanged ends for secure bolting | High-pressure systems |
3. Based on Control Function
| Type | Description | Function |
| On/Off Type | Fully open or fully closed | Basic flow control |
| Modulating Type | Controls flow proportionally (with positioner) | Precise flow regulation |
Based on Disc & Seat Material
| Type | Description | Function |
| Soft Seated (EPDM/PTFE/Viton) | For leak-proof sealing and chemical resistance | Standard chemical & water service |
| High-Performance Seat | For higher temperature or aggressive media | Critical process environments |
Based on Automation Accessories
| Type | Description | Function |
| With Solenoid Valve | For remote electrical signal control | Controls the air supply to open or close the valve |
| With Limit Switch Box | Provides valve position feedback | Signals the control room if the valve is open/closed |
| With Positioner | Enables accurate modulating control | Precise positioning of the valve disc (e.g., 4-20mA) |
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 Pneumatic Butterfly Valve
Excellent Corrosion Resistance
CPVC construction resists acids, alkalis, salts, and corrosive chemicals, making it suitable for aggressive industrial environments.
Automatic Operation
A pneumatic actuator allows remote and automatic control, reducing manual effort and improving operational efficiency.
Fast Operation (Quarter-Turn)
Opens and closes with a 90° rotation, ensuring quick response and improved process control.
Compact Design
Requires less installation space compared to other automated valve types.
High Temperature Capability
Suitable for handling fluids up to approximately 90°C, better than standard PVC valves.
Lightweight Construction
Easier to install compared to metal valves, reducing labor and structural load.
Low Maintenance
Non-metallic body prevents rust, scaling, and corrosion, minimizing maintenance costs.
Cost-Effective Solution
Lower overall cost compared to automated valves while offering reliable performance.
Leak-Proof Sealing
Designed with EPDM/PTFE/Viton seats for tight shut-off and reliable sealing performance.
Energy Efficient Automation
Pneumatic actuators consume less energy compared to electric actuators in many industrial setups.
Long Service Life
Resistant to chemical attack and environmental degradation, ensuring durability.
Safe for Hazardous Areas
Pneumatic operation is ideal for explosive or flammable environments where electric actuators may pose risks.
Featured List of Applications
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 chemical, sewerage & drainage piping systems for industrial and commercial applications, and CPVC Pneumatic Butterfly Valve for industrial applications, including infrastructure projects. As a leading CPVC Pneumatic Butterfly Valve manufacturer, Petron Thermoplast also serves the sector through products in different categories. As we exclusively bring Petron Thermoplast CPVC chemical systems to the market, we are the first choice globally for portable chemical applications. Petron Thermoplast’s robust distribution network, combined with best-in-class technology, is set to create a strong & sustainable presence in the chemical Industry.
The core differences of CPVC Pneumatic Butterfly Valve lie in their connection method, applicable scenarios, and cost-effectiveness. The former is characterized by its lightweight and low cost, making it suitable for small pipelines and low-pressure conditions; the latter, with its high strength and ease of maintenance, dominates medium to large-scale industrial projects.
