PVDF Concentric Reducer
A PVDF concentric reducer is a pipe fitting made from PVDF (Polyvinylidene Fluoride) that is used to connect the two pipes of different diameters along the same centerline to ensure a smooth and symmetrical transition. A PVDF concentric reducer is a corrosion-resistant thermoplastic fitting designed to join the two PVDF pipes of different diameters in a straight line while maintaining a common centerline, typically used in chemical, pharmaceutical, semiconductor, oil & gas treatment piping systems.
The PVDF Concentric Reducer is known for its excellent chemical resistance, high mechanical strength, and stability under thermal stress. It is designed for applications requiring high purity and corrosion resistance, making it ideal for aggressive chemical environments and ultra-clean piping systems.
- Chemical Resistance
- Low Maintenance Requirement
- Low Thermal Conductivity
- Long Service Life
- Easy Installation
- Corrosion Resistance
PVDF Concentric Reducer Details
All Dimensions are in mm
d1: Internal Diameter (Small end)
d2: Internal Diameter (Large end)
d3: Outer Diameter
PN: Nominal Pressure
B: Total Length
Z1: Gap Length
gms: Grams
| Size (d3×d2×d1) | PN | B | Z1 | gms |
| 20 x 16 | 16 | 35 | 5 | 8 |
| 25 x 20 x 16 | 16 | 39 | 9 | 9 |
| 25 x 20 x 20 | 16 | 41 | 9 | 12 |
| 32 x 25 x 20 | 16 | 46 | 11 | 16 |
| 32 x 25 x 25 | 16 | 49 | 11 | 20 |
| 40 x 32 x 20 | 16 | 52 | 14 | 23 |
| 40 x 32 x 25 | 16 | 55 | 14 | 27 |
| 40 x 32 x 32 | 16 | 58 | 14 | 34 |
| 50 x 40 x 20 | 16 | 60 | 18 | 36 |
| 50 x 40 x 25 | 16 | 63 | 18 | 40 |
| 50 x 40 x 32 | 16 | 66 | 18 | 48 |
| 50 x 40 x 40 | 16 | 70 | 18 | 55 |
| 63 x 50 x 25 | 16 | 73 | 23 | 75 |
| 63 x 50 x 32 | 16 | 76 | 23 | 80 |
| 63 x 50 x 40 | 16 | 80 | 23 | 90 |
| 63 x 50 x 50 | 16 | 85 | 23 | 110 |
| 75 x 63 x 50 | 16 | 93 | 24 | 130 |
| 75 x 63 x 63 | 16 | 100 | 24 | 175 |
| 90 x 75 x 40 | 16 | 100 | 30 | 160 |
| 90 x 75 x 50 | 16 | 105 | 30 | 185 |
| 90 x 75 x 63 | 16 | 112 | 30 | 225 |
| 90 x 75 x 75 | 16 | 118 | 30 | 255 |
| 110 x 90 x 50 | 16 | 119 | 37 | 260 |
| 110 x 90 x 63 | 16 | 126 | 37 | 300 |
| 110 x 90 x 75 | 16 | 132 | 37 | 345 |
| 110 x 90 x 90 | 16 | 139 | 37 | 400 |
| 160 x 110 | 16 | 186 | – | 1270 |
| Parameter | Specification / Details |
| Material | Polyvinylidene Fluoride (PVDF) |
| Type | Concentric Reducer |
| Design Shape | Cone-shaped, same centerline alignment |
| Size Range | DN 15 mm to DN 300 mm (custom sizes available) |
| Density | ~1.78 g/cm³ |
| Temperature Range | -40°C to +120°C / +140°C (max) |
| Pressure Rating | PN10 – PN16 (≈10–16 bar, depends on size & SDR) |
| Tensile Strength | ≥ 40 MPa |
| Elongation at Break | ≥ 50% |
| Wall Thickness (Typical) | Varies with SDR (e.g., SDR 33, SDR 21) |
| Length (Reducer) | Depends on diameter combination (e.g., 40–65 mm small sizes) |
| Weight | Lightweight (varies by size, e.g., 0.03–0.12 kg for small sizes) |
| Surface Finish | Smooth internal surface, low friction |
| Connection Types | Butt fusion, socket fusion, electrofusion |
| Standards | ASTM D3222, ISO 10931 |
Material: Virgin PVDF for superior chemical and thermal performance
Design: Concentric design ensures balanced flow and minimal turbulence
Corrosion Resistant: Excellent resistance to acids, alkalis, and aggressive chemicals
High Purity: Suitable for ultra-pure applications in semiconductor and pharmaceutical industries
Temperature Tolerance: Operates effectively in a wide temperature range
UV and Weather Resistant: Suitable for outdoor and exposed environments
Non-toxic & Food Grade: Safe for use in food processing and potable water systems
Compatible with Fusion Welding: Supports butt welding, socket welding, and other PVDF joining techniques
Low Maintenance: Smooth interior surface prevents scaling and buildup
1) Pressure Rating at 20 °C (68 °F)
| Standard / System | Nominal Pressure | Pressure Rating |
| DIN / ISO PVDF | PN10 | 10 bar (145 psi) |
| DIN / ISO PVDF | PN16 | 16 bar (232 psi) |
| ASTM (Sch 80) | — | ~150–230 psi* |
2) Temperature Derating (Typical for PVDF)
| Operating Temperature | Allowable Pressure (% of 20°C rating) |
| 20°C | 100% |
| 40°C | 85% |
| 60°C | 70% |
| 80°C | 55% |
| 100°C | 40% |
3) Design Rule (Very Important)
| Condition | Pressure Rating Used |
| Different pipe sizes | Lower-rated (smaller) pipe |
| Higher temperature | Derated pressure value |
| Reducer selection | Same as a connected pipe |
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 Concentric Reducer
1) Excellent Chemical Resistance
Resists a wide range of acids, alkalis, solvents, and oxidizing chemicals, making it ideal for corrosive fluid handling systems
2) High Temperature Capability
Performs reliably at continuous operating temperatures up to ~140 °C, higher than most standard thermoplastics.
3) Smooth & Uniform Flow
Concentric design maintains a common centerline, minimizing turbulence, pressure loss, and flow disturbance.
4) High Purity & Low Contamination
Non-leaching and non-reactive material ensures fluid purity, essential for pharmaceutical, semiconductor, and food-grade applications.
5) High-Pressure Performance
Suitable for PN10 / PN16 and Schedule-based systems, offering strong mechanical integrity under pressure.
6) Corrosion & UV Resistance
Unaffected by corrosion, moisture, and UV exposure, allowing both indoor and outdoor installation.
7) Lightweight & Easy Installation
Much lighter than metal reducers, enabling easy handling, faster installation, and reduced support load.
8) Long Service Life
High resistance to fatigue, creep, and stress cracking, resulting in low maintenance and long operational life.
9) Leak-Free Jointing Options
Compatible with butt fusion, socket fusion, electrofusion, and flanged connections for reliable, leak-tight joints.
10) Cost-Effective Over Lifecycle
Although higher initial cost than PP or PVC, PVDF offers lower replacement, downtime, and maintenance costs.
Types of PVDF Concentric Reducer
1) By manufacturing method
- Molded PVDF concentric reducer
- Injection-molded in one piece
- Very smooth bore, excellent chemical resistance
- Common for small to medium sizes
- Widely used in high-purity and semiconductor systems
- Fabricated PVDF concentric reducer
- Machined and welded from PVDF pipe or billets
- Used for larger diameters or custom sizes
- Slightly higher cost, but very flexible in design
2) By end connection
- Socket weld (fusion weld) concentric reducer
- Pipes insert into sockets and are fusion-welded
- Great for leak-free, high-purity installations
- Common in chemical and pharmaceutical plants
- Butt weld concentric reducer
- Ends are butt-fused directly to pipes
- Strong, smooth flow path
- Preferred for larger pipe sizes
- Flanged concentric reducer
- Integrated or loose flanges
- Easy installation and maintenance
- Often used where frequent disassembly is needed
- Threaded concentric reducer (less common)
- Male/female threaded ends
- Used mainly in low-pressure or utility applications
3) By pipe standard/schedule
- DIN standard PVDF concentric reducer
- ANSI / ASTM standard PVDF concentric reducer
- JIS standard PVDF concentric reducer
- Available in Schedule 10, Schedule 40, and Schedule 80, depending on pressure needs
4) By application grade
- Industrial grade
- Chemical processing, oil & gas treatment, plating lines
- High-purity / semiconductor grade
- Ultra-clean molding, minimal extractables
- Used in fabs, pharma, and biotech
Why Choose Petron Thermoplast?
In the field of Oil, gas, and chemical technology, Petron Thermoplast Company played a leading role, known for innovation and reliability. Petron Thermoplast has engineered a high-performance PVDF Concentric Reducer that maximizes mixing efficiency and durability. Their design is patented to ensure consistent performance across a wide range of flow rates and pressures.
Petron Thermoplast PVDF Concentric Reducers are particularly favored in chemical treatment applications due to their precision, long service life, and compatibility with corrosive water.
Suitable for Industrial & Utility Applications
Our PVDF Concentric Reducers are widely used in oil and gas treatment plants, effluent systems, cooling water lines, chemical handling (mild chemicals), and industrial utilities.
Export-Grade Quality & Standards Compliance
All PVDF Concentric Reducers are manufactured under strict quality control and comply with international standards, making them suitable for domestic and global projects.
Trusted by EPCs, OEMs & Industries
Petron Thermoplast is a preferred supplier for EPC contractors, OEMs, and industrial operators, offering consistent quality, competitive pricing, and dependable supply.
