CPVC Butterfly Valves
The CPVC butterfly valve offers a reliable solution for managing fluid flow across various industrial applications. CPVC butterfly valve is one of the most versatile valve types, their unique design — featuring a rotating disc to control flow — allows for fast shutoff and precise regulation in both high- and low-pressure environments. A CPVC butterfly valve is a type of quarter-turn rotary control mechanism used to regulate the flow of fluids in a pipeline system. Its operation is based on a rotating disc situated directly within the flow route. This disc is maneuvered by an external actuator, which is linked via a stem. When the disc aligns itself parallel with the flow, it fully obstructs fluid passage. Conversely, when it is set perpendicularly, the fluid can freely flow through. A 90-degree rotation of the disc is needed to open or seal the valve.
The CPVC Butterfly Valve can be completely closed or opened by rotating the handle 90 degrees. Large CPVC butterfly valves often have a gearbox attached, which connects the hand wheel to the stem via gears. This makes valve functioning easier, but it comes at the cost of speed. CPVC butterfly valves are popular due to their dependability and low maintenance needs. Due to less wear, the useful life of the valve can be extended. This minimizes direct operating expenses and the number of hours spent on valve maintenance.
- Chemical Resistance
- Low Maintenance Requirement
- Low Thermal Conductivity
- Long Service Life
- Easy Installation
- Corrosion Resistance
CPVC Butterfly Valves Details
D: Outer diameter
DN: Nominal diameter
PN: Pressure nominal
B2: Lower body height
B3: Upper body height
C: Handle length
H: Total width
ØA max: Maximum bolt circle
ØA min: Minimum bolt circle
f: Bolt hole diameter
| D | DN | PN | B2 | B3 | C | H |
| 50 | 40 | 16 | 60 | 137 | 175 | 132 |
| 63 | 50 | 16 | 70 | 143 | 175 | 147 |
| 75 | 65 | 10 | 80 | 164 | 175 | 165 |
| 90 | 80 | 10 | 93 | 178 | 175 | 185 |
| 110 | 100 | 10 | 107 | 192 | 272 | 211 |
| 140 | 125 | 10 | 120 | 212 | 330 | 240 |
| 160 | 150 | 10 | 134 | 225 | 330 | 268 |
| 225 | 200 | 10 | 161 | 272 | 420 | 323 |
| Parameter | Specification |
| Material | CPVC (Chlorinated Polyvinyl Chloride) body |
| Valve Type | Butterfly Valve (Quarter-turn valve) |
| Size Range | 2” to 12” (50 mm to 300 mm) |
| End Connection | Wafer / Lug type (fits between flanges) |
| Pressure Rating | Up to 10 bar (depending on size & temperature) |
| Temperature Range | 0°C to 90°C |
| Operation | Manual lever / Gear operated / Actuated (pneumatic or electric) |
| Disc Material | CPVC / PVC / Stainless Steel (depending on design) |
| Seat Material | EPDM / PTFE |
| Flow Type | Bi-directional |
| Operation Angle | 0° to 90° (quarter turn) |
| Standards | ASTM D1784, ISO / DIN flange compatibility |
| Installation | Flanged pipeline installation |
| Maintenance | Low maintenance, easy seat replacement |
| Density | 1.50 – 1.60 g/cm³ |
| Tensile Strength | 50 – 70 MPa |
| Impact Strength | High |
| Hardness | Rockwell R 110 – 120 |
| Thermal Conductivity | ~0.14 W/m·K |
| Coefficient of Thermal Expansion | 6.7 × 10⁻⁵ /°C |
| Vicat Softening Temperature | ~110°C |
| Water Absorption | < 0.1% |
| Chemical Resistance | Excellent (acids, alkalis, salts) |
| Corrosion Resistance | Non-corrosive |
| Electrical Insulation | Excellent |
1. Wafer / Lug Type Design
- Compact, lightweight design
- Can be installed between flanges easily
- Reduces space and piping requirements
2. Quarter-Turn Operation
- 90° lever operation for quick open/close
- Can also be automated with gears or actuators
- Provides a clear visual indication of valve position
3. Corrosion & Chemical Resistance
- CPVC body and disc resist corrosion, rust, and scaling
- Compatible with a wide range of chemicals
- Ideal for water treatment, chemical, and industrial applications
4. High Temperature & Pressure Capability
- Operates up to 93°C
- Pressure rating typically PN10 (10 bar at 23°C)
- Suitable for hot water and moderate-pressure systems
5. Leak-Tight Shutoff
- EPDM or NBR seat provides bubble-tight sealing
- Reliable isolation of fluid
- Suitable for both on/off and throttling applications.
6. Lightweight Construction
- Easier handling and installation compared to metal valves
- Reduces structural support requirements
7. Low Operating Torque
- Smooth disc rotation+
- Minimal effort required for manual operation+
- Compatible with gear or actuator operation for larger sizes
8. Multiple End Connections
- Wafer, lug, or flanged designs
- Integrates easily with ANSI/DIN standard flanges
- Suitable for retrofitting existing pipelines
9. Durable & Low Maintenance
- Non-metallic construction prevents corrosion-related wear
- Long service life with minimal servicing
10. Non-Conductive & Non-Magnetic
- Electrically insulating
- Safe for industrial or chemical environments
- Pressure Rating at Standard Temperature (23°C)
| Nominal Size (DN) | Inch Size | Pressure Rating @ 23°C |
| DN50 – DN150 | 2″ – 6″ | 10 bar (PN10) |
| DN200 | 8″ | 10 bar (PN10) |
2. Pressure–Temperature Derating Table (Typical)
| Temperature (°C) | Derating Factor | Effective Pressure (PN10 valve) |
| 23 | 1.00 | 10.0 bar |
| 40 | 0.80 | 8.0 bar |
| 60 | 0.63 | 6.3 bar |
| 80 | 0.50 | 5.0 bar |
| 93 (Max) | 0.40 | 4.0 bar |
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 Butterfly Valves
1. Corrosion & Chemical Resistance
- CPVC body and disc resist rust, corrosion, and scaling
- Excellent compatibility with acids, alkalis, salts, and chemicals
- Ideal for water treatment, chemical, and industrial applications
2. Lightweight & Easy to Install
- Much lighter than metal valves
- Easy to handle, transport, and install
- Requires less support and labor
3. High Temperature Resistance
- Operates continuously up to 93°C
- Suitable for hot water and process fluid systems
4. Quick Operation
- Quarter-turn lever allows fast open/close
- Reduces downtime in process systems
5. Low Operating Torque
- Smooth disc rotation
- Easy manual or automated operation
6. Leak-Tight Shutoff
- EPDM / NBR seat provides bubble-tight sealing
- Reliable isolation in fluid lines
7. Versatile Connection Options
- Wafer, lug, or flanged ends
- Can integrate with ANSI or DIN standard flanges
8. Durable & Low Maintenance
- Non-metallic construction eliminates corrosion-related wear
- Minimal maintenance required
- Long service life
9. Non-Conductive & Non-Magnetic
- Electrically insulating
- Safe for industrial or chemical environments
10. Cost-Effective
- Lower initial and installation costs compared to metal valves
- Reduced maintenance and long lifecycle cost
Types of CPVC Butterfly Valves
1. Wafer-Style CPVC Butterfly Valves
Wafer-style butterfly valves are designed to fit snugly between two pipe flange. They are lightweight and cost-effective, often used in low-pressure systems.
One key advantage of wafer-style valves is their ability to seal in both directions, preventing backflow in systems that need bidirectional pressure control. These valves are popular for general-purpose applications due to their compact design, making them ideal where space is limited.
2. Lug-Style CPVC Butterfly Valves
Lug-style butterfly valves are installed using threaded inserts, or “lugs,” which enable them to be bolted between flanges. This design allows one side of the piping system to be disconnected without affecting the other side, making lug-style valves particularly useful for systems that require frequent maintenance or isolation.
These valves are more robust than wafer-style valves and can handle moderate to high-pressure environments. Because of their durability, lug-style valves are often preferred for end-of-line service where one side of the valve remains open.
3. Eccentric CPVC Butterfly Valves
Eccentric butterfly valves are designed to handle more demanding applications. They come in three variations — single, double, and triple eccentric — each providing enhanced sealing and reduced wear on the valve seat.
Single eccentric valves are designed with the disc offset from the valve’s centerline, which reduces friction during operation. Double eccentric valves feature an additional offset that minimizes contact between the disc and the seat, improving valve lifespan.
Triple eccentric valves are engineered for high-pressure environments and offer a more precise seal, making them suitable for industries like oil and gas, where performance and reliability are critical.
Why Choose Petron Thermoplast?
Petron Thermoplast is a trusted manufacturer and supplier of high-quality CPVC Butterfly Valve, engineered to deliver reliable filtration, long service life, and consistent performance across demanding industrial applications. Our products are designed to meet the needs of EPC contractors, OEMs, and process industries worldwide.
The Petron Thermoplast CPVC Butterfly Valve is a versatile and reliable type of valve that is used in a variety of industrial applications. They offer precise over fluid flow control, are easy to maintain, and are available in a variety of materials and configurations while they may not be suitable for use in high-temperature or high-pressure applications.
