V1810X0025 Alwa-Kombi-4 with external threads, DN25 mm, G1 1/4
SKU: V1810X0025
V1810X0025 Alwa-Kombi-4 with external threads, DN25 mm, G1 1/4
SKU: V1810X0025
Alwa-Kombi-4 (V1800) Circulation throttle valve
V1810X0025 Alwa-Kombi-4 with external threads, DN25 mm, G1 1/4
SKU: V1810X0025
Product overview
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.
- 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
- WRAS appoval up to 85 °C, Suitable connections see 'Connections for Alwa-valves.
Resources
| Application | Retrofittable automatic temperature control with support of thermal disinfection. Draining support with adapter (accessory). Valve housing without side connections for easy insulation. Cavity-free insert with maintenance-free spindle sealing. Handwheel thread isolated from the flow. Visible digital pre-setting dial with concealed pre-setting ring. Very precise due to factory calibration. For potable water circulation systems. |
|---|---|
| Approvals and Standards | DVGW, WRAS appoval up to 85°C, Suitable connections see Connections for Alwa-valves |
| Controlled Media | Potable Water |
| Media Temperature (Max) | 130 °C |
| DN Size | DN 25 |
| Connection Type | External Thread |
| Nominal Pressure | PN 16 |
| Operating Pressure (Max) | 16 bar |
| Includes | Valve housing in straight pattern with internal threads to ISO 7(DIN 2999) or external threads according to DIN ISO 228, Valve insert, Handwheel with digital display of pre-setting, Thermal actuator (accessory), Pipe connections (accessory) |
| Draining or Filling Support | Yes |
| Integrated Non-return Device | No |
| Position Indicator Type | Visible, digital pre-setting display with concealed pre-setting ring |
| Pre-setting | Yes |
| Flow Coefficient | 6,8 |
| Automatic Balancing Support | Yes |
| Connection Size | G 3/4 in |
| Valve Body Pattern | Y-pattern |
