PETFLEX Clamps
Flexible Stainless Steel Pipe Coupling Clamp
Industrial pipeline systems face constant challenges: leaks, vibration, thermal expansion, and corrosion. In critical industries like oil & gas, water treatment, marine, and chemicals, downtime caused by pipeline failure can be extremely costly.
Traditional joining methods such as welding or flanges require skilled labor, expensive downtime, and heavy equipment. For modern projects, engineers need a faster, flexible, and maintenance- friendly solution.
That’s where the Flexible Stainless Steel Pipe Coupling Clamp comes in — a high-performance mechanical jointing solution that ensures leak-proof, durable, and corrosion-resistant pipeline connections without welding.
Technical Details / Specification Table
| Property | Details |
|---|---|
|
Clamp Material |
Stainless Steel (Grade 304 / 316L) |
|
Sealing Element |
EPDM / NBR Elastomer |
|
Pipe Compatibility |
Steel, PVC, GRP, Cast Iron |
|
Flexibility |
Axial and Angular |
|
Temperature Resistance |
-20°C to +180°C (depending on seal type) |
|
Pressure Rating |
Up to 16 bar |
|
Bolt/Nut Material |
Stainless Steel A2 / A4, zinc-coated available |
|
Corrosion Resistance |
High, suitable for marine & chemical applications |
|
Testing |
Hydrostatic pressure, vibration, and leakage tests |
|
Certifications |
ISO 9001, DIN, ASTM standards on request |
Advantages & Benefits
Axial & Angular Flexibility
Ideal for misaligned or vibrating pipelines
Durable EPDM/NBR Seal
Chemical & heat resistant
Quick & Safe Installation
No welding, no hot work permits
Tested Performance
Hydrostatic & vibration tested before dispatch
Corrosion-Resistant Stainless Steel
Long service life in harsh environments
Low Maintenance
Easy to install, inspect, and replace
Cost-Effective
Faster repairs with reduced downtime
1. Material Specifications
| Parameter | Details |
|---|---|
|
Clamp Housing |
Stainless Steel (AISI 304 / 316 optional) |
|
Sealing Element |
EPDM / NBR (temperature & chemical resistance ranges) |
|
Bolts & Fasteners |
Stainless Steel A2 / A4 with anti-corrosion coating |
|
Temperature Range |
EPDM: –30°C to +120°C NBR: –20°C to +80°C |
|
Pressure Rating |
Up to 10 bar (varies with size) |
2. Performance Data
| Parameter | Details |
|---|---|
|
Axial Deflection (mm) |
e.g., ±5–12 mm depending on DN size |
|
Angular Deflection (°) |
2°–5° |
|
Vacuum Resistance |
Suitable for partial vacuum (state max value) |
|
Vibration Absorption |
Tested for industrial pipelines |
|
Standards & Certifications |
ISO 9001:2015 certified manufacturing WRAS Approval (for potable water – if applicable) DNV / ABS marine approval (if available or optional) ASTM / EN standards compliance |
4. Installation & Maintenance
1.
Clean pipe surfaces and ensure ends are free of sharp edges
2.
Place the PETFLEX clamp around the pipe and align the sealing sleeve.
3.
Tighten bolts evenly to recommended torque.
4.
Clean pipe surfaces and ensure ends are free of sharp edges
5.
Place the PETFLEX clamp around the pipe and align the sealing sleeve.
6.
Tighten bolts evenly to recommended torque.
Applications of PETFLEX Clamps
Automotive
Exhaust, fuel, and coolant lines
Oil & Gas
Pipelines under vibration & shifting ground
Chemical Processing
Corrosion-resistant sealing solutions
Marine & Offshore
Saltwater pipelines & shipbuilding
Water Supply & Treatment
Above-ground & buried pipelines
General Engineering
Versatile pipe coupling applications
A. Seal Options
| Seal Material | Temp. Resistance | Chemical Resistance | Applications |
|---|---|---|---|
|
EPDM |
-20°C to +120°C |
Excellent for water, air, mild chemicals |
Water supply, HVAC, marine |
|
NBR |
-20°C to +180°C |
Excellent for oils, hydrocarbons, fuels |
Oil & gas, chemical processing |
B. PETFLEX Clamp vs Welding vs Rigid Coupling
| Feature | PETFLEX Clamp | Welding | Rigid Coupling |
|---|---|---|---|
|
Installation |
Fast, no hot work |
Time-consuming, requires permits |
Moderate |
|
Flexibility |
Axial & angular |
Rigid |
Limited |
|
Maintenance |
Easy replacement |
Difficult |
Moderate |
|
Cost |
Low/Medium |
High |
Medium |
|
Reusability |
Yes |
No |
Limited |
Technical Table
| Part No. | Clamp Size (DN) | Pipe OD Range (mm) | Clamp Width (mm) | Sealing Range (mm) | Bolt Qty. | Recommended Torque (Nm) |
|---|---|---|---|---|---|---|
|
PTHG451-050 |
DN 50 (2″) |
60 – 75 |
80 |
±4 |
2 |
30–35 |
|
PTHG451-080 |
DN 80 (3″) |
88 – 110 |
100 |
±5 |
2 |
35–40 |
|
PTHG451-100 |
DN 100 (4″) |
110 – 135 |
120 |
±6 |
3 |
40–45 |
|
PTHG451-150 |
DN 150 (6″) |
160 – 185 |
150 |
±7 |
3 |
45–55 |
|
PTHG451-200 |
DN 200 (8″) |
210 – 235 |
180 |
±8 |
4 |
50–60 |
|
PTHG451-300 |
DN 300 (12″) |
315 – 340 |
220 |
±10 |
6 |
70–80 |
|
PTHG451-400 |
DN 400 (16″) |
420 – 450 |
250 |
±12 |
6 |
80–90 |
Frequently Asked Questions
DN 25 mm to DN 600 mm, with custom options on request.
Yes, we manufacture custom diameters, seal materials, and clamp widths.
Standard items: immediate stock; custom orders: 2–4 weeks.
ISO, DIN, and ASTM certifications with factory testing reports.
Yes, datasheets, CAD drawings, and manuals are available for download.
