Profile: Konvekta Limited manufactures a wide range of dampers from low leakage energy saving volume control dampers, corrosion resistant PVC dampers, through to pharmaceutical standard heavy duty stainless steel dampers. The K500 PVC opposed blade volume control damper is a corrosive resistant product for use in corrosive atmospheres, and areas with aggressive media. Our multi-leaf non-return dampers are used as air operated opening or closing dampers for intake, discharge, and pressure relief vents in air conditioning systems.