CPVC Flanged Check Valve
A CPVC Flanged Check Valve is a non return valve made from Chlorinated Polyvinyl Chloride (CPVC) material that is designed with flanged end connections and allows fluid to flow in one direction only, automatically preventing reverse flow in a piping system. The flanged ends enable secure bolted installation between pipeline flanges, making it suitable for larger diameter and high-flow industrial applications.
The CPVC Flanged Check Valve is a non-return valve designed to allow unidirectional flow while preventing backflow in piping systems. This CPVC Flanged Check Valve is highly resistant to corrosive chemicals and elevated temperatures. The flanged ends ensure secure, leak-proof connections for industrial applications where frequent maintenance or disassembly is required. It operates automatically, using internal mechanisms such as a swing or spring-assisted disc to close when reverse flow occurs, ensuring system protection and operational efficiency.
- Chemical Resistance
- Low Maintenance Requirement
- Low Thermal Conductivity
- Long Service Life
- Easy Installation
- Corrosion Resistance
CPVC Flanged Check Valve Details
| Nominal Size | A | B | C | F | G | Weight (CPVC lbs) | Cv (Socket/Thread) | Cv (Flange) | Cv (Spigot) | GPM (Horizontal) |
| 1/2″ | 2-1/16 | 3/4 | 4-1/16 | 5-3/16 | 2-5/16 | 0.33 | 6.3 | 6 | 6.3 | 0.10 |
| 3/4″ | 2-1/4 | 3/4 | 4-3/4 | 5-3/8 | 3-5/16 | 0.50 | 17 | 16 | 17 | 0.10 |
| 1″ | 2-7/8 | 3/4 | 5-1/8 | 5-3/4 | 3-5/8 | 0.79 | 25 | 24 | 25 | 0.25 |
| 1-1/4″ | 3-1/16 | 3/16 | 5-3/4 | 6-5/16 | 3-13/32 | 1.04 | 65 | 61 | 65 | 0.40 |
| 1-1/2″ | 3-1/2 | 1/4 | 6-1/4 | 6-3/4 | 4-3/8 | 1.37 | 80 | 82 | 86 | 0.75 |
| 2″ | 4-1/4 | 5/16 | 7-3/4 | 8-1/4 | 5-1/4 | 2.47 | 130 | 125 | 130 | 0.75 |
| 2-1/2″ | 6-3/16 | 7/16 | 9-5/16 | 11-3/8 | 7-1/2 | 6.90 | 200 | 183 | 200 | 1.50 |
| 3″ | 6-9/16 | 7/16 | 10-5/16 | 12-1/4 | 6-9/16 | 6.90 | 275 | 258 | 275 | 4.00 |
| 4″ | 7-1/2 | 8-1/4 | 11-3/16 | 12-3/4 | 7-1/2 | 12.13 | 500 | 489 | 500 | 5.50 |
| Parameter | Specification |
| Material (Body) | CPVC (Chlorinated Polyvinyl Chloride) |
| Disc / Ball Material | CPVC / PVC / Stainless Steel (optional) |
| Seal Material | EPDM / FKM (Viton) |
| Valve Type | Swing Check / Ball Check / Lift (Spring) Check |
| End Connection | Flanged (Flat Face / Raised Face) |
| Flange Standard | ANSI B16.5 Class 150 / DIN PN10 / PN16 |
| Nominal Size Range | 1” to 12” (DN25 – DN300) |
| Pressure Rating | PN10 / PN16 / Class 150 |
| Max Working Pressure | Up to 10–16 bar @ 23°C |
| Temperature Range | 0°C to 95°C (max ~93°C typical) |
| Flow Direction | One-way (non-return valve) |
| Installation | Horizontal or vertical (flow upward preferred for vertical) |
| Face-to-Face Standard | ANSI / DIN standards |
| Testing Standard | ISO 5208 |
| Operation | Automatic (no manual actuation) |
| Pressure Drop | Low (especially swing type) |
| Density | ~1.45–1.58 g/cm³ |
| Color | Grey / Off-white |
| Corrosion Resistance | Excellent against acids, alkalis, and salts |
| Chemical Resistance | Suitable for aggressive and corrosive fluids |
| Surface Finish | Smooth internal bore → reduced friction loss |
| Thermal Resistance | Higher heat resistance than PVC |
| Mechanical Strength | Good tensile and impact strength |
| Weight | Lightweight compared to metal valves |
| Durability | Long service life, non-rusting |
| Scaling Resistance | No scaling or internal buildup |
| UV Resistance | Moderate (can be enhanced with additives) |
One-Way Flow Control: Prevents backflow automatically to protect equipment and maintain process integrity.
Flanged End Connections: Provide easy installation, maintenance, and alignment with standard piping flanges.
Corrosion and Chemical Resistance: Ideal for aggressive chemical environments due to CPVC construction.
High Temperature Tolerance: Suitable for fluid systems up to 93°C (200°F).
Low Pressure Drop: Designed for efficient flow with minimal resistance.
Maintenance-Friendly Design: Simple internal components allow easy cleaning and service access.
Non-Metallic Construction: Rust-free, lightweight, and non-conductive.
Reliable Sealing: EPDM or FKM seals ensure leak-proof performance.
| Valve Size | Nominal Pressure (PN) | Working Pressure @ 23°C | Working Pressure @ 60°C | Working Pressure @ 90°C |
| 1½” (40 mm) | PN16 | 16 Bar | 10–12 Bar | 6–8 Bar |
| 2″ (50 mm) | PN16 | 16 Bar | 10–12 Bar | 6–8 Bar |
| 3″ (80 mm) | PN10 / PN16 | 10–16 Bar | 8–10 Bar | 5–6 Bar |
| 4″ (100 mm) | PN10 | 10 Bar | 6–8 Bar | 4–5 Bar |
| 6″ (150 mm) | PN10 | 10 Bar | 6–8 Bar | 4–5 Bar |
| 8″ (200 mm) | PN6 / PN10 | 6–10 Bar | 4–6 Bar | 3–4 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 Flanged Check Valve
Prevents Backflow
Automatically allows one-way flow and prevents reverse flow in pipelines.
Excellent Corrosion Resistance
CPVC material resists acids, alkalis, and aggressive chemicals.
Strong & Secure Flanged Connection
Bolted flange ends provide rigid, leak-proof installation in large pipelines.
Suitable for Large Diameter Systems
Ideal for high-flow and industrial applications.
High Temperature Capability
Can handle fluids up to approximately 90°C.
Protects Pumps & Equipment
Prevents reverse rotation and damage caused by back pressure.
Low Maintenance
Non-metallic body prevents rusting, scaling, and corrosion.
Long Service Life
Durable construction ensures reliable performance over time.
Reduced Water Hammer (Spring/Design Dependent)
Certain designs help minimize pressure surges.
Cost-Effective in Corrosive Environments
More economical than metal flanged check valves, where corrosion is a concern.
Types of CPVC Flanged Check Valve
1️. Swing Type CPVC Flanged Check Valve
- Uses a hinged disc that swings open with forward flow.
- Closes automatically when the flow stops or reverses.
- Suitable for horizontal installation.
- Low-pressure drop design.
2️. Ball Type CPVC Flanged Check Valve
- Contains a ball that moves with the flow direction.
- Seals automatically against reverse flow.
- Suitable for vertical or horizontal installation (depending on design).
- Simple and reliable construction.
3️. Lift (Piston) Type CPVC Flanged Check Valve
- Uses a disc or piston that lifts vertically when fluid flows.
- Provides faster closing action than the swing type.
- Suitable for higher-pressure systems.
4️. Spring-Loaded CPVC Flanged Check Valve
- Equipped with a spring-assisted disc.
- Quick closing reduces the water hammer effect.
- Suitable for pump discharge lines.
5️. Dual Plate (Wafer Style with Flanges) CPVC Check Valve
- Two spring-loaded plates are inside the body.
- Compact design for large pipelines.
- Used in high-flow industrial systems
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?
At Petron Thermoplast, CPVC Flanged Check Valve are critical components in piping systems, ensuring smooth flow transitions and efficient use of space. Understanding the dimensions and applications of short radius bends is essential for designing reliable and efficient piping systems. By adhering to standards such as ASME B16.9, engineers can ensure compatibility and performance across various industries.
