3 way By-pass Damper for fumes, Gas and high temperatures up to 600°C. This system is a complete integrated solution to control or divert fumes between boiler and chimney in regenerator systems. The By-Pass is often time preferred to the use of two independent valves due to the easier labour onsite. Available from DN 100 to DN 2000 in Double Flanged version, either with Metal to Metal or Enhanced seat to improve its performance. Actuation for ON/OFF or Modulating service both Pneumatic or Electric.