191
191
Check valve with running nut
- Acceptable working temperature range (peaks): -20 (see suitable fluids)–110 °C
- Working temperature range: 0 (no frost)–95 °C
- Check valve opening pressure: 0,02 bar
- Max working pressure: 16 bar
- Suitable fluids: water for thermal systems, glycol solutions (max 30%), domestic water
- Threaded connections: ISO 228-1
- Product codes
- Description
- Documentation
- Alternative products
Product codes
| Item code | Size |
|
|
Download the 3D file |
|---|---|---|---|---|
| 191020000 | G 1 RN - G 3/4 M | 10 | 40 | |
| 191025000 | G 1 RN - G 1 M | 10 | 40 |
Description
Barberi® check valves are monodirectional devices, allowing the backflow prevention of fluid under pressure. According to the model, they are normally used in domestic water installations, heating systems, central heating systems, heat generators (wall-mounted boilers, solid fuel generators, heat pumps), solar thermal systems, generic industrial and agricultural water systems. Sealing is permitted through forces exerted by a spring and by the fluid pressure against a gasket which guarantees the seal even at very low back pressures. Moreover, the force of the spring allows the valve to have a universal characteristics concerning the installation position.
The peculiarity of these valves is the presence of a check valve override device allowing the fluid to come back. This device is necessary when filling the system (to rapidly discharge air) and draining (to allow the complete emptying of the system). In case of particular applications with high pressures/temperatures (for example in thermal solar systems) the same valves with metal obturator and Viton gasket can be considered (art. 191KV).
If low noise operation is required, it is possible to use the same valves equipped with anti-noise device (art. 191.2).
Documentation
Alternative products
