Product Description
Safety groups of this type are used to protect pressurised water heaters according to the requirements of DIN 4753-1, EN 806-2 and DIN EN 1488. They are compact appliances which incorporate all the necessary safety devices such as check valve, shut-off valve, test point, diaphragm type safety valve and pressure reducing valve in one unit. The safety valve protects the downstream cylinder, pressure vessel etc. by automatically opening when excess pressure occurs. The check valve prevents back pressure, backflow and back syphonage of water from the hot water unit. In addition, a balanced seat pressure reducing valve is fitted on the inlet to control the supply pressure to that required for the system.
Technical Properties
| Approvals |
|
| Media |
Drinking Water |
| DN size |
20 mm |
| Set pressure |
6 bar |
| Port connection |
external threads |
| Port diameter |
3/4 inch |
| Outlet pressure |
1,5 ... 6 bar |
| Max. media temperature |
40 oC |
| Body material |
brass |
| Spring bonnet material |
synthetic material |
| Transparant strainer chamber |
Yes |
| Setpoint scale |
Yes |
| Balanced seat design |
Yes |
| Additional Descriptions |
- Tested according DIN EN 1488
- Fully approved for noise level protection to class 1
- Meets UBA regulations for drinking water
- Pressure reducing valve with inlet pressure balancing - inlet pressure fluctuation does not influence the outlet pressure
- With insulation shell
- Replacement insert makes servicing simple
- Easy venting
- Standardised discharge connection
- for hot water tanks up to 200 liter
|
| Mounting position |
horizontal or vertical |
| Maximum inlet pressure |
16 bar |
| Minimum pressure drop |
1,5 bar |
