CPVC Check Valve
A CPVC Check Valve is a non return valve made from Chlorinated Polyvinyl Chloride (CPVC) material that allows fluid to flow in one direction only and automatically prevents reverse flow in a piping system. It operates automatically without manual control and is used to protect pumps, pipelines, and equipment from damage caused by backflow. A CPVC Check Valve is a corrosion-resistant plastic valve that permits one way flow of liquid and prevents backflow in piping systems.
The CPVC Check Valve is designed to ensure unidirectional flow and prevent backflow in piping systems handling corrosive or high-temperature fluids. This CPVC Check Valve offers exceptional chemical resistance and thermal stability, making it ideal for industrial applications such as chemical processing and high-purity systems.
- Chemical Resistance
- Low Maintenance Requirement
- Low Thermal Conductivity
- Long Service Life
- Easy Installation
- Corrosion Resistance
CPVC Check Valve Details
d → Nominal Pipe Size (inches)
DN → Diameter Nominal (mm)
PN → Pressure Nominal / Pressure Rating (Bar)
E → Total Length / End-to-End Dimension (mm)
H → Overall Height of Valve (mm)
L → Socket Depth / Insertion Length (mm)
Z → Installation Length / Center-to-End Distance (mm)
g → Weight of Valve (grams)
| Size (Inch) | DN (mm) | PN (bar) | L | H | D1 | D2 | Weight/Other |
| 3/8″ | 10 | 16 | 54 | 78 | 14.5 | 49 | 153 |
| 1/2″ | 15 | 16 | 54 | 82 | 16.5 | 49 | 148 |
| 3/4″ | 20 | 16 | 63 | 91 | 19 | 53 | 190 |
| 1″ | 25 | 16 | 72 | 103 | 22.5 | 58 | 130 |
| 1 1/4″ | 32 | 16 | 85 | 120 | 26 | 68 | 460 |
| 1 1/2″ | 40 | 16 | 100 | 139 | 30 | 79 | 675 |
| 2″ | 50 | 16 | 118 | 174 | 36 | 102 | 1080 |
| 2 1/2″ | 65 | 16 | 157 | 211 | 44.5 | 122 | 2839 |
| 3″ | 80 | 16 | 174 | 248 | 48 | 152 | 3597 |
| 4″ | 100 | 16 | 212 | 283 | 57.5 | 168 | 6289 |
| Parameter | Specification |
| Material | CPVC (Chlorinated Polyvinyl Chloride) body, PTFE / EPDM seat |
| Valve Type | Check Valve (Non-return valve) |
| Size Range | ½” to 4” (15 mm to 100 mm) |
| End Connection | Socket / Threaded (BSP / NPT) / Flanged |
| Pressure Rating | Up to 10–16 bar (depending on size & temperature) |
| Temperature Range | 0°C to 90°C |
| Operation | Automatic (flow-driven opening/closing) |
| Flow Direction | Unidirectional |
| Disc Type | Swing, Lift, or Spring-loaded (depending on model) |
| Sealing | PTFE / EPDM seats for leak-proof performance |
| Standards | ASTM D1784, ASTM F1970 |
| Installation | Horizontal / vertical (depending on type) |
| Maintenance | Minimal; easy disassembly for cleaning |
| 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. CPVC Construction
Manufactured from Chlorinated Polyvinyl Chloride (CPVC), offering excellent resistance to corrosion, chemicals, and high temperatures.
2. Gear Operated Mechanism
Equipped with a gearbox and handwheel for smooth, controlled, and low-torque operation—especially suitable for larger valve sizes.
3. Quarter-Turn Operation
Operates with a 90° rotation for quick opening and closing of fluid flow.
4. High Temperature Resistance
Can withstand higher temperatures compared to standard PVC valves, making it ideal for hot water and process applications.
5. Leak-Proof Sealing
Designed with reliable sealing components (such as EPDM or PTFE seats) to ensure tight shut-off and prevent leakage.
6. Lightweight Design
Easier to handle and install compared to metal valves, reducing labor and installation costs.
7. Low Maintenance
Non-metallic body prevents rust and scaling, ensuring longer service life with minimal upkeep.
8. Wide Size Range
Available in multiple sizes to meet various industrial and commercial piping requirements.
9. Flanged or Wafer Type Options
Can be supplied in different connection types depending on installation needs.
| Valve Size | Nominal Pressure (PN) | Working Pressure @ 23°C | Working Pressure @ 60°C | Working Pressure @ 90°C |
| ½” (15 mm) | PN16 | 16 Bar | 10–12 Bar | 6–8 Bar |
| ¾” (20 mm) | PN16 | 16 Bar | 10–12 Bar | 6–8 Bar |
| 1″ (25 mm) | PN16 | 16 Bar | 10–12 Bar | 6–8 Bar |
| 1½” (40 mm) | PN10 / PN16 | 10–16 Bar | 8–10 Bar | 5–6 Bar |
| 2″ (50 mm) | PN10 / PN16 | 10–16 Bar | 8–10 Bar | 5–6 Bar |
| 3″ (80 mm) | PN10 | 10 Bar | 6–8 Bar | 4–5 Bar |
| 4″ (100 mm) | PN10 | 10 Bar | 6–8 Bar | 4–5 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 Check Valve
Prevents Backflow
Allows fluid to flow in one direction only and automatically blocks reverse flow.
Protects Pumps & Equipment
Prevents damage caused by back pressure and reverse rotation.
Excellent Corrosion Resistance
CPVC material resists chemicals, acids, alkalis, and salt solutions.
High Temperature Resistance
Suitable for hot water and industrial fluids up to approximately 90°C.
Lightweight & Easy Installation
Much lighter than metal valves, reducing installation effort and cost.
Low Maintenance
Non-metallic body prevents rusting, scaling, and frequent servicing.
Long Service Life
Durable construction ensures extended operational performance.
Chemical Compatibility
Ideal for chemical processing, oil and gas treatment, and industrial pipelines.
Leak-Proof Sealing
Equipped with EPDM/Viton seals for tight shut-off.
Cost-Effective Solution
Lower overall cost compared to metal check valves in corrosive environments.
Types of CPVC Check Valve
1️. Ball Type CPVC Check Valve
- Uses a ball inside the valve body to block reverse flow.
- Simple design and reliable operation.
- Suitable for vertical installations and low to medium pressure systems.
- Common in chemical and water pipelines.
2️. Swing Type CPVC Check Valve
- Uses a hinged disc (flap) that swings open with forward flow.
- Closes automatically when the flow stops or reverses.
- Suitable for horizontal pipeline installations.
- Low pressure drop.
3️. Spring (Lift) Type CPVC Check Valve
- Contains a spring-loaded disc or piston.
- Provides quick closing action.
- Reduces chemical hammer effect.
- Suitable higher-pressure systems.
4️. Wafer Type CPVC Check Valve
- Compact, lightweight design installed between flanges.
- Space-saving and cost-effective.
- Used in large pipeline systems.
5️. Threaded / Socket Type CPVC Check Valve
- Based on connection type (BSP/NPT threaded or solvent socket).
- Easy installation and maintenancCommsmall-diameterter piping systems.
Why Choose Petron Thermoplast?
Petron Thermoplast CPVC Check Valves are particularly favored in chemical treatment applications due to their precision, long service life, and compatibility with corrosive water.
By harnessing the Valve effect, these devices offer a reliable, energy-efficient method for fluid injection without the need for pumps or electricity. With companies like Petron Thermoplast pushing the technology forward, the future of fluid injection remains efficient, sustainable, and powerful.
