To minimise heat loss from the boiler and to prevent the ingress of rain water, Dyrocon have a range of stack isolating dampers which are designed for use with stacks from 300mm dia to in excess of 7m diameter.

The stack isolating damper can be of the butterfly, twin louvre, Multilouvre or twin flap design and can incorporate an automatic pressure relieving system
to prevent over pressurisation and damage to the turbine.