Fume Hood Ductwork & Venting Accessories

HEMCO offers a complete range of chemical-resistant ductwork and venting accessories designed for safe and efficient laboratory ventilation. These components are engineered for durability, ease of installation, and reliable performance in handling hazardous exhaust systems.

Flexible and Rigid PVC Ducting

4”

6”

8”

10”

12”

14”

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1. Flexible Ducting neoprene impregnated fiberglass reinforced with steel helix wire. Standard 12’ lengths. Each piece includes two strap clamps.

Cat. No.  80051

Cat. No.  80052

Cat. No.  80053

Cat. No.  80054

Cat. No.  80055

Cat. No.  80056

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2. PVC Rigid Ducting chemical resistant for permanent installations. Standard 10’ lengths with straight ends.

Cat. No.   82004

Cat. No. 82006

Cat. No. 82009

Cat. No. 82011

Cat. No. 82013

Cat. No. 82015

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3. PVC Coupling required to connect straight sections.

Cat. No. 82147

Cat. No. 82149

Cat. No. 82153

Cat. No. 82157

Cat. No. 82159

Cat. No. 82160

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4. PVC 90 degree Elbow used in order to offset obstacles. Has belled ends for duct connections.

Cat. No. 82060

Cat. No. 82061

Cat. No. 82063

Cat. No. 82066

Cat. No. 82068

Cat. No. 82069

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5. PVC 45 degree Elbow used in order to offset obstacles. Less static pressure loss than a 90 degree elbow. Has belled ends for duct connections.

Cat. No. 82082

Cat. No. 82083

Cat. No. 82085

Cat. No. 82087

Cat. No. 82089

Cat. No. 82090

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6. PVC 45 degree WYE lateral for joining common ductwork in multiple hood designs. Branch diameter may be sized to 2” to 4” smaller than main diameter. Has belled ends for duct connections.

Cat. No. 82216

Cat. No. 82218

Cat. No. 82226

Cat. No. 82229

Cat. No. 82233

Cat. No. 82234

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7. PVC Tee used in manifold exhaust systems. Has belled ends for duct connection.

Cat. No. 82034

Cat. No. 82036

Cat. No. 82038

Cat. No. 82040

Cat. No. 82044

Cat. No. 82046

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8. PVC Butterfly Damper modifies cfm for single or multiple hood arrangement. Has belled ends for duct connection.

Cat. No. 82450

Cat. No. 82452

Cat. No. 82454

Cat. No. 82456

Cat. No. 82458

Cat. No. 82460

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9. PVC Blast Gate Damper a gate that slides in and out to control cfm. Has belled ends for duct connection.

Cat. No. 82369

Cat. No. 82371

Cat. No. 82373

Cat. No. 82375

Cat. No. 82377

Cat. No. 82379

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10. PVC Rain Skirt slips over straight pipe on roof to slope water away from cutout.

Cat. No. 82328

Cat. No. 82330

Cat. No. 82332

Cat. No. 82334

Cat. No. 82336

Cat. No. 82337

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11. PVC Vent outlet for horizontal venting through wall or window. Angled end prevents rain from entering. Male connector included.

Cat. No. 80074

Cat. No. 80076

Cat. No. 80077

Cat. No. 80078

Cat. No. 80079

Cat. No. 80080

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12. Zero Pressure Weather Cap discharges fumes vertically away from roof. Self-draining. Minimal static pressure loss. This is the recommended weather cap.

Cat. No. 82350 “A”=16”

Cat. No. 82352 “A”=24”

Cat. No. 82354 “A”=32"

Cat. No. 82356 “A”=40"

Cat. No. 82358 “A”=48”

Cat. No.   82359 “A”=56”

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13. Round to Round Transition to smaller duct diameter.

Cat. No. 82613 4"- 6"

Cat. No. 82615 6"- 8"

Cat. No. 82617 8"- 10"

Cat. No. 82619 10"- 12"

Cat. No. 82620 12"- 14"

Cat. No. 82621 14"- 16"

Start Your Next Project Today

Contact HEMCO to configure the appropriate ductwork and venting components for your laboratory ventilation system. Our team can assist with sizing, layout, and system integration.

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