PVDF Flanged Check Valve
The PVDF Flanged Check Valve is a one way, non return valve designed to prevent backflow in chemical and industrial piping systems. Constructed from high-purity Polyvinylidene Fluoride (PVDF), this valve offers exceptional resistance to aggressive chemicals, UV exposure, and temperature variations. Its flanged connection ensures easy and secure installation in standard piping systems, making it ideal for applications in chemical processing, oil, gas treatment, and high-purity fluid handling systems.
A PVDF Flanged Check Valve is a flanged connection on both ends for bolted installation into a pipeline. The valve automatically opens when fluid flows in the intended direction and closes when flow reverses, preventing backflow. Its PVDF body provides high chemical resistance, durability, and suitability for corrosive or high-purity fluids.
- Chemical Resistance
- Low Maintenance Requirement
- Low Thermal Conductivity
- Long Service Life
- Easy Installation
- Corrosion Resistance
PVDF Flanged Check Valve Details
*Technical Drawing
*Technical Data
| Parameter / Property | Specification / Description |
| Body Material | PVDF (Polyvinylidene Fluoride) |
| Disc / Internal Component | PVDF or reinforced PVDF |
| Seat / Seal Material | PTFE / EPDM / FKM |
| Spring Material | Hastelloy C (for spring-assisted types) |
| Size Range | ½” to 8” (DN15 to DN200) |
| Pressure Rating | PN10 (≈10 bar / 150 PSI) |
| Temperature Range | -20°C to +120°C (depending on seal material) |
| Connection Type | Flanged (ANSI, DIN, JIS standards) |
| Operation Type | Automatic (spring-assisted or swing type) |
| Flow Control | One-way flow with automatic backflow prevention |
| Standards | ISO, DIN, ANSI, JIS |
| Media Compatibility | Corrosive chemicals, acids, alkalis, solvents, ultra-pure water |
| — | — |
| Design Type | Swing check or spring-assisted wafer type |
| Disc Design | Floating or spring-loaded disc for bubble-tight shutoff |
| Flow Path | Straight-through, minimal pressure drop |
| Sealing System | PTFE or EPDM seat ensures leak-proof operation |
| Spring Function | Hastelloy C spring provides rapid closure to prevent water hammer |
| Body Construction | PVDF flanged body, lightweight, corrosion-resistant |
| Installation | Between flanges; horizontal or vertical orientation possible |
| Maintenance | Easy disassembly for inspection or seat replacement |
| Weight | Lighter than equivalent metal flanged valves |
| Surface Finish | Smooth internal surfaces prevent scaling and deposition |
Corrosion-Resistant Body: Made entirely from PVDF for outstanding resistance to harsh chemicals and UV exposure.
Stable Pressure Control: Maintains consistent downstream pressure regardless of inlet pressure fluctuations.
Self-Actuating: Operates without external power, using internal spring mechanisms for automatic pressure regulation.
Compact Design: Lightweight and easy to install in tight spaces.
Adjustable Setpoint: Outlet pressure can be adjusted to match system requirements.
Smooth Flow Control: Minimizes pressure surges and water hammer effects.
Low Maintenance: Durable materials ensure long service life with minimal upkeep.
Wide Application Range: Suitable for aggressive chemical media, ultra-pure fluids, and corrosive environments.
| Valve Size (DN / Inch) | Pressure Rating (PN / bar) | Temperature Range |
| DN15 – DN50 (½”–2”) | PN10 (≈10 bar / 150 PSI) | -20°C to +120°C |
| DN65 – DN100 (2½”–4”) | PN10 (≈10 bar / 150 PSI) | -20°C to +120°C |
| DN125 – DN150 (5”–6”) | PN10 (≈10 bar / 150 PSI) | -20°C to +120°C |
| DN200 (8”) | PN10 (≈10 bar / 150 PSI) | -20°C to +120°C |
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 PVDF Flanged Check Valve
1. Excellent Chemical Resistance
- Made from PVDF (Polyvinylidene Fluoride), which resists strong acids, bases, and corrosive chemicals.
- Ideal for aggressive fluid handling systems.
2. Prevents Backflow
- Automatically allows flow in one direction and blocks reverse flow.
- Protects pumps, pipelines, and equipment from damage.
3. High Purity Performance
- Smooth internal surface minimizes contamination.
- Suitable for pharmaceutical, semiconductor, and ultrapure chemical systems.
4. Strong and Secure Flanged Connection
- Flanged ends provide rigid, leak-resistant bolted installation.
- Suitable for larger pipe sizes and higher system stability requirements.
5. Low Maintenance
- Simple internal mechanism (swing or spring type).
- Fewer moving parts compared to other valve types.
6. Corrosion and UV Resistance
- PVDF offers long service life even in harsh outdoor or chemical environments.
- Resistant to weathering and aging.
7. Good Temperature Capability
- Can operate at moderate elevated temperatures compared to many other plastic valves.
- Maintains mechanical strength over a wide temperature range.
8. Lightweight Compared to Metal Valves
- Easier handling and installation.
- Reduces overall system weight.
Types of PVDF Flanged Check Valve
1. Swing Check Valves
- A hinged disc (flapper) swings open with forward flow and swings closed when flow reverses.
- Simple design, low pressure drop, suitable for horizontal or vertical piping.
- Chemical processing, oil & gas treatment, pump discharge lines to prevent backflow.
2. Spring-Assisted / Spring-Loaded Flanged Check Valves
- Similar to swing check valves but include a spring to assist faster closure and reduce chemical hammer (sudden reverse flow shock).
- These can be especially useful where minimal reverse flow or rapid closing is needed.
3. Lift or Piston-Type Check Valves
- The internal piston or lift plate moves vertically with flow pressure and returns to the seat by gravity or spring.
- Good sealing for higher pressures and cleaner fluids; less susceptible to flow turbulence.
4. Dual Plate / Double Disc Check Valves
- Made with two spring-loaded plates that open with flow and close quickly to reduce hammer.
- These are compact and lighter, ideal where space is limited.
- In PVDF form, used in chemical or corrosion-sensitive applications where faster closure is beneficial.
5. Ball Check Valves
- Use a ball and seat design that lifts with forward flow and seals against backflow.
- Good for fluids with particulate content or slurries due to fewer moving parts.
- PVDF versions may exist but are less common as flanged industrial valves compared with swing types.
Applications of PVDF Flanged Check Valve
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, PVDF Flanged Check Valves offer a highly efficient solution for streamlining flow control needs in various industrial applications. From their space-saving design to their reliable performance. A PVDF Flanged Check Valves are a versatile option for ensuring precise control over fluid flow. By investing in compact PVDF Flanged Check Valves, businesses can improve efficiency, reduce maintenance costs, and enhance overall system performance. Whether used in the oil and gas industry, chemical processing plants, or other treatment facilities.
PVDF Flanged Check Valves offer a practical and reliable solution for managing flow control requirements. The efficiency of PVDF Flanged Check Valves makes them an essential component for any organisation looking to optimise their flow control processes and achieve greater operational success.
