Honeywell - Auto By Pass Valve - 22mm (Angled)
Product code: DU145
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- Maintain Minimum Flow Through A Boiler
- Minimises Flow Noise
- Hinders Boiler Corrosion
- Differential Pressure Finely Adjustable
- Presetting Accessible Directly
- Setting Value Is In Meters Water Column
- No External Controls Required
- DU145-3/4B
Product overview
- Maintain minimum flow through a boiler
- Minimises flow noise
- Hinders boiler corrosion
- Differential pressure finely adjustable using indicator scale
- Presetting accessible directly
- Setting value is in meters water column
- No external controls required
Specifications
Application The use of automatic bypass valves becomes particularly important when heating systems include large numbers of thermostatic radiator valves (TRVs) , whilst the TRVs are open the automatic bypass valve remains closed, however, as the TRVs start to close,, the automatic bypass valve starts to open maintaining the required water flow through the boiler. , Using an automatic bypass valve is also likely to reduce noise in systems caused by excess water velocities. , It also helps to reduce the corrosion caused by flue gas condensation as the boiler return temperature is raised. Controlled Media Water-Glycol Mixture according to VDI 2035 Connection Size 3.4 in Connection Type External Thread pH Value 8 Differential Pressure Set point 0.1 ... 0.6 bar Media Temperature (Max) 110 °C Operating Pressure (Max) 3 bar Bonnet Material High Grade Synthetic Housing Material Unpolished pressed brass Product Features Maintain minimum flow through a boiler, Minimises flow noise, Hinders boiler corrosion, Differential pressure finely adjustable using indicator scale, Presetting accessible directly, Setting vlaue is in meters water column, No external controls required
Product overview
- Maintain minimum flow through a boiler
- Minimises flow noise
- Hinders boiler corrosion
- Differential pressure finely adjustable using indicator scale
- Presetting accessible directly
- Setting value is in meters water column
- No external controls required
| Application | The use of automatic bypass valves becomes particularly important when heating systems include large numbers of thermostatic radiator valves (TRVs) , whilst the TRVs are open the automatic bypass valve remains closed, however, as the TRVs start to close,, the automatic bypass valve starts to open maintaining the required water flow through the boiler. , Using an automatic bypass valve is also likely to reduce noise in systems caused by excess water velocities. , It also helps to reduce the corrosion caused by flue gas condensation as the boiler return temperature is raised. |
|---|---|
| Controlled Media | Water-Glycol Mixture according to VDI 2035 |
| Connection Size | 3.4 in |
| Connection Type | External Thread |
| pH Value | 8 |
| Differential Pressure Set point | 0.1 ... 0.6 bar |
| Media Temperature (Max) | 110 °C |
| Operating Pressure (Max) | 3 bar |
| Bonnet Material | High Grade Synthetic |
| Housing Material | Unpolished pressed brass |
| Product Features | Maintain minimum flow through a boiler, Minimises flow noise, Hinders boiler corrosion, Differential pressure finely adjustable using indicator scale, Presetting accessible directly, Setting vlaue is in meters water column, No external controls required |
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