Description
Product Specification (Reducing Coupling)
**EN Standard Compliant** – Engineered for Fitting Systems.
Dimensional Specifications (OD)
| OD (mm) |
|---|
| 18×15 |
| 22×15 |
| 22×18 |
| 28×15 |
| 28×18 |
| 28×22 |
| 35×15 |
| 35×18 |
| 35×22 |
| 35×28 |
| 42×15 |
| 42×18 |
| 42×22 |
| 42×28 |
| 42×35 |
| 54×15 |
| 54×18 |
| 54×22 |
| 54×28 |
| 54×35 |
| 54×42 |
| 76.1×54 |
| 88.9×54 |
| 88.9×76.1 |
| 108×54 |
| 108×76.1 |
| 108×88.9 |
Advantages of Fittings
- **Easy Assembly**: Practical and convenient (**efficient installation in seconds**).
- **Quick Installation**: Saves hours of labour, ideal for large projects.
- **Safe and Approved**: Guaranteed system with certifications.
- **Simplified Labour**: No need for specialised personnel (just a press tool).
- **Flameless Connection**: Enhances safety by eliminating the need for naked flames.
O-Ring Material Characteristics and Application
The **rubber O-ring** for stainless steel fittings is an important component which directly affects the sealing and sanitary performance of the entire system. Aquinox O-rings use **imported rubber materials** and use automatic rubber vulcanizing machine processed and produced through standard vulcanization temperature and time. Aquinox strictly implements the performance standards in **GB/T 19228.3-2012**. The hygienic performance of the O-ring used for drinking water is full in line with the **GB/T17219** standard. Besides, we can also provide O-rings that meet the **EU DVGW standard**. O-ring resistant to hot water, ageing and the additives commonly used in drinking water. There are different kinds of O-rings depending on its application.
O-Ring Compatibility Chart:
| Material | Color | Temperature Range | Max. Working Pressure (MPa) | Application |
|---|---|---|---|---|
| EPDM | Black | -40°C – 150°C | 2.5 | ● Hot & Cold Water ● Drinking Water System |
| SI | White | -20°C – 200°C | 2.5 | ● Hot & Cold Water ● Drinking Water System |
| SI (Import) | Claret | -20°C – 200°C | 2.5 | ● Fire ● Steam ● Solar |
| NBR | Yellow | -30°C – 120°C | 2.5 | ● Gas & Oil |
| HNBR | Green | -30°C – 180°C | 2.5 | ● Gas |
| FKM | Brown | -30°C – 250°C | 2.5 | ● Industrial & chemical |
Press-Fit Installation Method
