PPH Reducer Coupler
A PPH Reducer Coupler is a pipe fitting made from Polypropylene Homopolymer (PPH) that is used to connect two pipes of different diameters in a piping system.The PPH Reducer Coupler allow pipes of different sizes to be joined together. These fittings are typically used to connect small consumer or process feeder lines to larger supply circuits or to establish smaller diameter connections.The PPH reducer coupler is available for a variety of pipe types including copper, as well as various pipe sizes and configurations. Depending on the application, these fittings may be screw-on, compression, brazing, or adhesive attachment types.
A reduction coupling is used to connect tubes or pipes of different diameters. These specialized pipe joining fittings are designed to simplify coupling to a wide range of pipe sizes while maintaining the integrity of the pipe circuit. A reducer coupler is essentially a reducing coupling, meaning it connects pipes of different sizes while preserving system integrity and flow efficiency.
- Chemical Resistance
- Low Maintenance Requirement
- Low Thermal Conductivity
- Long Service Life
- Easy Installation
- Corrosion Resistance
PPH Reducer Coupler Details
ID: Internal Diameter
OD: Outside Diameter
WT: Wall Thickness
SL: Socket Length
L & H: Typically refer to the Total Length and Height/Overall Clearance of the fitting.
| Size (Inch) | ID (mm) | OD (mm) | WT (mm) | SL (mm) | L (mm) | H (mm) |
| ½ | 21.64 | 29.10 | 3.73 | 22.23 | 50 | 72 |
| ¾ | 26.97 | 34.79 | 3.91 | 25.40 | 57 | 79 |
| 1 | 33.78 | 42.88 | 4.55 | 28.58 | 67 | 93 |
| 1¼ | 42.55 | 52.25 | 4.85 | 31.75 | 80 | 108 |
| 1½ | 48.72 | 58.88 | 5.08 | 34.93 | 94 | 121 |
| 2 | 60.78 | 71.86 | 5.54 | 38.10 | 107 | 138 |
| 2½ | 73.56 | 87.58 | 7.01 | 44.45 | 130 | 174 |
| 3 | 89.50 | 113.74 | 7.62 | 47.63 | 140 | 200 |
| 4 | 114.99 | 132.11 | 8.56 | 57.15 | 188 | 245 |
| 6 | 153.88 | 168.10 | 7.11 | 77.25 | 250 | 330 |
| Parameter / Property | Details & Specifications |
| Material | Polypropylene Homopolymer (PPH) |
| Type | Reducer Coupler (Concentric / Eccentric) |
| Function | Connects two pipes of different diameters |
| Connection Method | Socket Fusion / Butt Fusion |
| Size Range | Typically DN20 × DN15 to DN300 × DN200 |
| Pressure Rating | Up to 10 bar (depending on size & temperature) |
| Temperature Range | 0°C to +100°C |
| Standards | ISO 15494, DIN 8077/8078, EN ISO 161 |
| Color | Ral Grey / Natural (Off-White) |
| Manufacturing Process | Injection molded / machined |
| Lining (Optional) | PTFE / FEP / PFA (for high chemical resistance) |
| Density | ~0.90 – 0.91 g/cm³ |
| Tensile Strength | ~30 – 37 MPa |
| Elongation at Yield | ~9 – 10% |
| Thermal Conductivity | ~0.22 W/m·K |
| Melting Point | ~160 – 170°C |
| Chemical Resistance | Excellent against acids, alkalis, solvents |
| Surface Finish | Smooth internal bore |
| UV Resistance | Moderate (can be enhanced with additives) |
1. High Chemical Resistance
- Resistant to acids, alkalis, and aggressive chemicals
- Suitable for corrosive industrial environments
2. Smooth Internal Surface
- Provides low friction flow
- Minimizes pressure loss and scaling
3. Excellent Corrosion Resistance
- Non-corrosive and rust-free
- Longer service life compared to metal fittings
4. High Temperature Stability
- Can operate up to ~100°C
- Maintains performance under elevated temperatures
5. Strong & Durable Construction
- Good mechanical strength and impact resistance
- Withstands industrial operating conditions
6. Lightweight Design
- Easy to handle, transport, and install
- Reduces installation time and labor cost
7. Leak-Proof Jointing
- Compatible with socket fusion and butt fusion welding
- Ensures tight, homogeneous joints
8. Dimensional Accuracy
- Manufactured with precise tolerances
- Ensures proper fit and alignment
9. Low Thermal Conductivity
- Acts as a good thermal insulator
- Reduces heat loss in piping systems
10. Long Service Life
- Resistant to wear, scaling, and environmental stress
- Requires minimal maintenance
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 PPH Reducer Coupler
1. Excellent Chemical Resistance
- Highly resistant to acids, alkalis, and corrosive chemicals
- Ideal for chemical processing and industrial applications
2. Smooth Flow Transition
- Provides a gradual change in pipe diameter
- Reduces turbulence, friction loss, and pressure drop
3. High Temperature Resistance
- Can operate up to ~100°C
- Maintains mechanical strength at elevated temperatures
4. Corrosion & Rust Free
- Unlike metal fittings, it does not corrode or rust
- Ensures long service life in aggressive environments
5. Lightweight & Easy Installation
- Easy to handle, transport, and install
- Compatible with socket fusion and butt fusion welding
6. Leak-Proof Joints
- Fusion welding creates strong, homogeneous joints
- Minimizes leakage risk
7. High Durability & Strength
- Good impact strength and toughness
- Long operational life with minimal maintenance
8. Low Maintenance Cost
- No scaling or corrosion buildup
- Reduces repair and replacement costs
9. Good Thermal & Electrical Insulation
- Low thermal conductivity
- Non-conductive, making it safe for industrial systems
10. Versatile Applications
- Suitable for Chemical industries, Water treatment plants, Effluent and wastewater systems, Industrial piping networks
Types of PPH Reducer Coupler
1. Concentric Reducer Coupler
- Both pipe ends are aligned on the same centerline
- Shape is symmetrical (cone-shaped)
- Used mainly in vertical piping systems
- Ensures uniform flow and pressure distribution
2. Eccentric Reducer Coupler
- Pipe ends are offset (not aligned)
- Has one flat side (top or bottom)
- Used mainly in horizontal pipelines
- Prevents air pockets and fluid accumulation
- Flat on Top (FOT) – prevents air/gas accumulation
- Flat on Bottom (FOB) – maintains pipe level on supports
3. Socket Fusion Reducer Coupler
- Connected using socket welding (fusion)
- Common in small diameter PPH piping systems
4. Butt Fusion Reducer Coupler
- Joined by butt welding technique
- Used for larger diameter pipes
- Provides strong, leak-proof joints
Applications of PPH Reducer Coupler
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?
Petron Thermoplast are easy to install. Extremely lightweight and compared to industrial connectors, but at the same time extremely durable that can last you decades to come. PPH Reducer Coupler means no concern regarding Corrosion. Flow will be smoother and consistently more cost-effective in comparison to other components.
At Petron Thermoplast, we are committed to delivering high-quality products that meet industry standards and exceed customer expectations. Our products have been rigorously tested and certified through various tests to ensure their durability and performance.
Petron thermoplast is a wide range of PPH Reducer Coupler that can be used to extend the performance and versatility of our storage tanks. Different sizes and types are available to suit various applications.
