Viessmann Air Vent Valve G3/8″ 7819971 Viessmann 7819971 Air Vent Valve G3/8″Suitable for:
- Viessmann WB2B 200-W Combi 26KW
- Viessmann WB2B 200-W Combi 30KW
- Viessmann WB2B 200-W Combi 35KW
- Viessmann WB2B 200-W System 19KW
- Viessmann WB2B 200-W System 26KW