Rotary chip dryer inlet isolation at OSB plant.

Internal refractory lined guillotine and mating control louver damper

• The engineers at McDermott have been designing flue gas dampers for the past 30 years for the power industry
• Equipment consists of Louver, Guillotine, Butterfly, Poppet and Diverter dampers.
• Sizes range from 4 sq. ft. to 340 square ft. Manufactured in all alloys from A-36 to Hastelloy
• Utility grade dampers designed to less than 1/2 yield of all components at design temperature and pressure including the unprotected stall torque from electric actuators and 120 psig for pneumatic actuators Industrial dampers designed to 2/3 Yield and l/600.

Butterfly dampers are designed for low leakage, Zero leakage and Man-Safe Isolation.

Butterflys can be single blade, bi-parting blade or multiple blade for control.

Actuators can be handlever with locking quadrant, manual gear with hand wheel, electric, pneumatic. Hydraulic.