20L Classic Keg
The Petainer 20L Classic Keg is the ultimate one-way packaging solution for craft breweries expanding into global markets. Engineered for total product protection, this lightweight PET keg comes enclosed in a robust cardboard box, shielding your premium beer from light strike while optimizing pallet space for long-distance freight.
- 100% UV and light protection via a heavy-duty outer box
- Ultralight design drastically cuts freight costs and carbon emissions
- Eliminates expensive return logistics and asset tracking entirely
- Pre-purged and sterile—ready to fill straight out of the box
- Universally compatible with standard global draft systems
Product Specifications
| Colour | Volume | Diameter | Height | Weight | Neck Type | rPET |
|---|---|---|---|---|---|---|
| Brown | 20000ml | 235mm | 557mm | 1103g | A Type | - |
| Brown | 20000ml | 235mm | 557mm | 1103g | G Type | - |
| Brown | 20000ml | 235mm | 557mm | 1124g | D Type | - |
| Brown | 20000ml | 235mm | 557mm | 1124g | S Type | - |
20L Classic Keg Properties
| Max Content Pressure | 3.1 bar / 45 psi |
|---|---|
| Dispense Working Pressure | < 3.1 bar / 45 psi |
| Burst Pressure | > 7.75 bar/ > 112 psi |
| Drop Functional Test | 1.2 m flat metal surface |
| ASTM D4169-14 (pre-condition 40°C; 72h) | Transport Simulation Test filled kegs |
| Sanitising Recommendation | 70 % Ethanol |
| Ph Range Compatibility | 3 to 9 |
| Fill Window (Based on Storage Conditions) | Optimum: Within 6 months Max: Within 9 months (if optimum storage conditions met) |
| CO2 Loss | < 15 % ( 22 °C / 72 °F) 12 months |
|---|---|
| O2 Ingress | < 0.2 ppm (22 °C / 72 °F) 9 months |
| Cleaning | Cleaning detergents & chemicals may cause stress cracks on the components |
| UV and Light Protection | Up to 500 nm |
| Materials – Keg | PET |
| Materials – Fitting | POM, PP, TPE, NBR, Stainless Steel |
| Recommended Storage Conditions Unfilled | Optimum: < 22 °C / 72 °F Max: 50 °C / 122 °F |
| Shelf Life - Filled Based on optimum storage; (below 22°C), out of direct sunlight. | O2 Barrier: 18 months from manufacture CO2 Barrier: 12 months from fill date |
Compliance & certifications
Produced in accordance with the following regulations and standards:
Case Study
How PET Kegs Helped Scale Cold Brew Distribution
Ferris Coffee adopted Petainer's 20L one-way PET Hybrid Kegs to expand cold brew distribution beyond its own cafés. The move reduced the cost and complexity of steel keg logistics, while helping protect product quality and support growth in new markets.
Frequently Asked Questions
The outer cardboard container provides a physical, 100% light-blocking barrier that protects sensitive hop compounds from UV degradation during transit and storage.
No. Every Petainer Classic Keg arrives fully assembled, pre-purged, and sterile, meaning you can connect it directly to your filling line without any washing steps.
It is available with standard A, G, S, and D-type fitting options to seamlessly integrate with your existing brewery equipment and international tap lines.
