The AVDO range of automatic bypass valves can be used as either differential pressure controls or to provide a minimum flow through a system. Many boiler manufacturers are now insisting that a bypass valve be fitted in all installations to ensure that the volume of water circulating through the boiler remains consistent, regardless of the load on the system.

• Easy to set, self acting flow controller
• Opens on rising differential pressure
• Setting range of 0.05 to 0.5 bar
• Improves system efficiency
• Maximum flow temperature is 100°C
• Maximum working pressure is 10 bar
• Straight design