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DAMPERS
Butterfly Dampers

Fabricated butterfly dampers designed to regulate and control airflow in industrial ventilation and exhaust systems. Available in PVC and CPVC materials, these dampers provide reliable airflow adjustment, excellent corrosion resistance, and long-lasting performance in demanding environments.

Fabricated butterfly dampers designed to regulate and control airflow in industrial ventilation and exhaust systems. Available in PVC and CPVC materials, these dampers provide reliable airflow adjustment, excellent corrosion resistance, and long-lasting performance in demanding environments.

Corrosion
Resistant

Chemical
Resistant

Lightweight &
Strong

Low
Maintenance

Specifications
Select Material & Size

Choose your material to view available models, dimensions, and end configurations.

PVC & CPVC Tabs

PVC

Polyvinyl Chloride

CPVC

Chlorinated Polyvinyl Chloride

  • PVC supports corrosion-resistant industrial ventilation applications with strong chemical durability and low maintenance.

PVC BUTTTERFLY DAMPERS

Model NumberNominal Duct SizeA*B*C*Fully Opened Gate
BG-CPVC-333.5 + 1/167.751115.25
BG-CPVC-444.5 + 1/167.751115.25
BG-CPVC-666.625 + 1/169.7513.7520
BG-CPVC-777.375 + 1/1610.751522
BG-CPVC-888.625 + 1/1611.751624.25
BG-CPVC-999.375 + 1/1612.751726
BG-CPVC-101010.75 + 1/1614.252030.375
BG-CPVC-121212.75 + 1/1616.252234.375
BG-CPVC-141414 + 1/1617.252437.625
BG-CPVC-161616 + 1/1619.252742.625
BG-CPVC-181818 + 1/1621.53047.625
BG-CPVC-202020 + 1/1623.53352.562
BG-CPVC-242424 + 1/1627.53962.5
24-CPVC-Blast-Gate-2026-06-16.csv
  • CPVC supports industrial ventilation applications requiring greater temperature resistance and chemical durability.

CPVC BUTTERFLY DAMPERS

Model NumberNominal Duct SizeAverage Duct O.D.ABAverage Wall ThicknessEnd Type
90-CPVC-6-166.6256.625A+2"0.187Socket
90-CPVC-7-177.3757.375A+2"0.187Socket
90-CPVC-8-188.6258.625A+2"0.187Socket
90-CPVC-9-199.3759.375A+2"0.187Socket
90-CPVC-10-11010.7510.75A+2"0.187Socket
90-CPVC-12-11212.7512.75A+2"0.187Socket
90-CPVC-14-1141414A+2"0.187Socket
90-CPVC-16-1161616A+2"0.187Socket
90-CPVC-18-1181818A+2"0.187Socket
90-CPVC-20-1202020A+3"0.219Socket
90-CPVC-24-1242424A+3"0.25Socket
25-CPVC-90°-Elbow-2026-06-16.csv

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