Back to Home Advanced Valve Designs stack caps are used to protect the exhaust system from the elements and reduce the stack effect when the system is off. AVD used a standard design in the manufacture of this damper, or the dampers may be custom manufactured to your specific needs. Stack dampers are available with electric, pneumatic actuation or counterbalance weight.

Back to Home Advanced Valve Designs refractory lined dampers are designed for temperatures up to 2800 F. The dampers are manufactured in any alloy to suit your needs, inconel, hastalloy, micro alloys, 310 s/s, 330 s/s and other commercially available alloys. Various seat styles are available to meet your shut-off requirements. Refractory lined dampers are available with AVD's exclusive floating metallic liner to eliminate the erosive conditions found in many other refractory lined dampers.

Back to Home Advanced Valve Design offers a complete line of fiberglass products to meet your needs. FRP is available in butterfly style dampers, diverter dampers, knife gate and backdraft dampers. All FRP equipment is offered with stainless steel shafts or other commercial alloys, and is available in any commercially available resin. FRP equipment is available with clearance seat, step seat or rubber seat to meet your shut-off requirements.