Product Description
The Alwa-Kombi-4 is used as throttle valve for hydronic balancing of warm potable water circulation systems.To achieve a hydronic balance the flow in the circulation pipe is throttled by manually presetting the valve. The valve can also be equipped with a thermal actuator which allows a regulation of the water temperature in the circulation system to the exact degree. The thermal actuator can be installed without interruption of the warm water supply. When the thermal actuator 50 - 60 C (122 - 140 F) is used, a thermal disinfection according to DVGW worksheet W551 and W553 is supported. Hydronic balance is also retained during the thermal disinfection process to ensure disinfection of all pipelines and risers.
Technical Properties
| Connection size |
28 mm |
| Approvals |
|
| DN size |
25 mm |
| Port connection |
Sanpress fittings |
| Nominal pressure |
PN16 |
| Kvs value |
6,8 |
| Pre-setting |
Yes |
| Max. media temperature |
130 oC |
| Body pattern |
Y-pattern |
| Materials |
Valve housing made of dezincification-resistant brass |
| Position indication |
Visible, digital pre-setting display with concealed pre-setting ring |
| Automatic balancing support |
Yes |
| Integrated non-return device |
No |
| Draining/filling support |
Yes |
| Additional Descriptions |
WRAS appoval up to 85 oC, Suitable connections see 'Connections for Alwa-valves'. |
| Features |
- Meets KTW requirements
- For regulation according to DVGW worksheets W551 and W553
- Valve housing and all parts with flow-contact made of corrosion-resistant, dezincification-resistant brass
- Retrofittable automatic temperature-control with support of thermal disinfection
- Draining option with retrofittable and removable draining adapter
- No additional side connections to valve housing
- Cavity-free cartridge with maintenance-free spindle sealing
- Spindle thread is isolated from the flow
- Seat sealing made of PTFE
- Visible, digital presetting dial with concealed presetting handwheel
- High accuracy due to factory calibration to every single valve
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