PVDF Flange
PVDF Flanges are used when more stringent mechanical requirements are necessary because they offer stress resistance. The product of choice for applications requiring high-temperature exposure and extremely strong chemical resistance is PVDF Flanges. When increased clarity, flexibility, and a higher continuous service temperature are required, PVDF Flanges are selected. PVDF Flanges include all the typical characteristics of PVDF, including rigidity and a long flex life (up to 500o F).
Blind, Slip-On, Socket Weld, and Threaded Flanges are examples of flanges. According to our PVDF flanges are constructed with Type II mat plus alternating layers of 1 1/2 oz mat and 24 oz woven. In comparison to a normal Type I (all Mat) flange, our flanges are 1.7 times stronger in the crucial flange and hub area. A PVDF flange is a flat or raised pipe fitting. PVDF Flanges are typically bolted together with a gasket in between to create a tight, leak-proof joint.
- Chemical Resistance
- Low Maintenance Requirement
- Low Thermal Conductivity
- Long Service Life
- Easy Installation
- Corrosion Resistance
PVDF Flange Details
d – Pipe Inner Diameter or Bore
DN – Nominal Diameter
b – Flange Thickness
K – Pitch Circle Diameter (PCD)
D2 – Bolt Hole Diameter
D6 – Raised Face Diameter
M – Number of Bolt Holes
N – Bolt Size / Diameter
| d (mm) | DN (mm) | b (mm) | K (mm) | D2 (mm) | M (Bolt) | N (Holes) |
| 20 | 15 | 12 | 65 | 14 | M12 | 4 |
| 25 | 20 | 14 | 75 | 14 | M12 | 4 |
| 40 | 32 | 16 | 100 | 18 | M16 | 4 |
| 50 | 40 | 16 | 110 | 18 | M16 | 4 |
| 63 | 50 | 19 | 125 | 18 | M16 | 4 |
| 75 | 65 | 19 | 145 | 18 | M16 | 4 |
| 90 | 80 | 21 | 160 | 18 | M16 | 8 |
| 110 | 100 | 22 | 180 | 18 | M16 | 8 |
| Parameter | Specification / Details |
| Material | Virgin PVDF (Polyvinylidene Fluoride) |
| Type | Flange (Slip-on, Blind, Stub, Lap joint, Threaded) |
| Size Range | ½″ to 12″ (DN15 to DN300) |
| Pressure Rating | Up to PN16 (≈16 bar / 232 PSI) |
| Temperature Range | -20°C to +120°C (up to ~150°C in some cases) |
| Density | ~1.77 – 1.80 g/cm³ |
| Color | Natural white / translucent |
| Mechanical Strength | High strength with good toughness |
| Flammability | Flame-retardant (UL 94 V-0 grade) |
| Surface Finish | Smooth, non-stick, low friction |
| Permeability | Very low (excellent barrier properties) |
| Connection Method | Bolted flange with gasket sealing |
| Standards | ASTM D3222, ISO 10931, DIN 8077/8078 |
| Compliance | FDA, RoHS, REACH, USP Class VI (optional) |
| Chemical Resistance | Excellent resistance to acids, alkalis, solvents, and salts |
| Thermal Stability | Maintains strength at elevated temperatures |
| Mechanical Durability | High rigidity and impact resistance |
| UV & Weather Resistance | Suitable for outdoor and harsh environments |
| Purity | High purity, low extractables → ideal for pharma & semiconductor use |
| Corrosion Resistance | Completely corrosion-free, unlike metal flanges |
| Sealing Performance | Tight sealing with gasket and bolting system |
| Abrasion Resistance | Good resistance to wear and erosion |
| Maintenance | Low maintenance with long service life |
1️. High-Quality PVDF Raw Material
- Uses virgin PVDF resin (homopolymer grade)
- Excellent chemical and thermal stability
- Consistent material properties
2️. Precision Manufacturing
- Injection molding and CNC machining facilities
- Accurate bolt hole alignment
- Smooth surface finish
- Tight dimensional tolerances
3️. Compliance with International Standards
- Manufactured as per ANSI, DIN, JIS, and ISO standards
- Material standards like ASTM D3222
- Pressure classes: PN6, PN10, PN16
- ISO 9001 certified production units
4️. Wide Product Range
- Slip-on, Blind, Threaded, Socket Weld, Lap Joint
- Sizes from ½” to 24” (DN15–DN600)
- Custom thickness and pressure ratings available
5️. Strong Chemical & Corrosion Resistance
- Suitable for aggressive acids and alkalis
- UV-resistant for outdoor use
- Non-reactive and non-corrosive
6️. High Temperature Capability
- Operating range: -40°C to +140°C
- Maintains structural integrity under heat
PVDF Flange Pressure Rating by PN Class (at 20°C / 68°F)
| PN Class | Max Working Pressure (Bar) | Max Working Pressure (PSI) | Common Application |
| PN10 | 10 bar | 145 psi | Low-pressure chemical systems |
| PN16 | 16 bar | 230 psi | Medium-pressure piping |
| PN20 | 20 bar | 290 psi | High-pressure industrial applications |
Temperature Derating for PVDF Flanges (Example: PN16, 16 bar at 20°C)
| Temperature (°C) | Temperature (°F) | Max Working Pressure (Bar) | Max Working Pressure (PSI) |
| 20°C | 68°F | 16 bar | 230 psi |
| 30°C | 86°F | 14 bar | 200 psi |
| 40°C | 104°F | 12 bar | 175 psi |
| 50°C | 122°F | 10 bar | 145 psi |
| 60°C | 140°F | 8 bar | 115 psi |
| 80°C | 176°F | 5 bar | 75 psi |
| 100°C | 212°F | 3 bar | 45 psi |
| 120°C | 248°F | 1.5 bar | 22 psi |
| 140°C | 284°F | 0.8–1 bar | 12–15 psi |
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 Flange
Excellent Chemical Resistance
- Resistant to strong acids, alkalis, and solvents
- Suitable for corrosive and aggressive chemical environments
High Temperature Tolerance
- Can operate from –40°C to +140°C
- Maintains strength and integrity at elevated temperatures
Excellent UV Resistance
- Does not rust or corrode like metal flanges
- UV-stable for outdoor use
- Long service life with minimal maintenance
Lightweight & Easy Handling
- Lighter than metal flanges, making installation easier
- Reduces labor and transportation costs
5️. Leak-Proof Connections
- Bolted flange design with gaskets ensures tight, secure joints
- Reduces risk of leaks in high-purity or hazardous systems
High Mechanical Strength
- Can withstand internal pressure and mechanical stress
- Durable for industrial piping systems
Suitable for High-Purity Applications
- Low extractables and contamination
- Ideal for pharmaceutical and semiconductor piping
Versatility in Connection
- Compatible with threaded, socket-weld, or slip-on connections
- Can join PVDF pipes to equipment, valves, or other piping materials
Types of PVDF Flange
1️. Slip-On PVDF Flange
- Slides over the pipe and is welded or bonded in place
- Easy alignment during installation
- Commonly used in low to medium-pressure systems
2️. Blind PVDF Flange
- Solid flange without a bore (no center hole)
- Used to close or seal pipe ends
- Allows easy system expansion in the future
3️. Threaded (Screwed) PVDF Flange
- Internal threads for direct pipe connection
- No welding required
- Easy installation and removal
4️. Socket Weld PVDF Flange
- Pipe inserted into a socket before welding
- Provides a strong and leak-resistant joint
- Suitable for higher-pressure applications
5️. Lap Joint PVDF Flange (With Backing Ring)
- Used with a stub end and backing ring
- Allows easy alignment and rotation
- Cost-effective for large diameter piping.
Why Choose Petron Thermoplast?
Petron Thermoplast is a trusted manufacturer and supplier of PVDF flanges for smooth operation, reliable shut-off, and long-term performance in demanding industrial environments.
Premium-Grade PVDF Construction
Our Flange is manufactured using high-quality, corrosion-resistant flanges, ensuring excellent performance in chemical, oil, gas, and industrial process applications.
Low Maintenance & Long Service Life
Flange construction eliminates rust, scaling, and corrosion, while the operation minimizes mechanical wear—resulting in minimal maintenance and extended flange life.
Wide Size & Connection Options
Available in multiple sizes with wafer, lug, and flanged end connections, compatible with DIN, ANSI, and other international standards
Smooth Flow Control & Throttling
Our PVDF Flange allows accurate flow regulation, making titsuitable for both on/off and throttling applications.
