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Architectural Laboratory Water Treatment Marine Air Handling

Founded in 1968, PolyFab provides custom engineered plastic fabrications.

We work with many materials and specialize in clear plastics.

Some of the applications we have made include:

  • Large graduated cylinders
  • Architectural formed pieces
  • LEXAN® Tanks and waterbaths
  • Clear PVC and acrylic assemblies
  • Laboratory splash guards and custom trays for all industries
  • Plastic flooring and secondary containment basins
  • Custom PVC, CPVC, polypropylene and HDPE duct work
  • Fume hoods made from any weldable plastic material
  • Marine fresh, gray, and black water tanks
  • Custom polypro and HDPE tanks for chemical storage and treatment
  • Machined polyethylene fittings
  • Routed plastic and wood signs

Click on the navigation to the left for specific product photos, and along the top for application-specific photos and information. We look forward to being of service to you!

Large PVC Duct

4.2 Raceways (Underground): All underground conduit should be PVC or RGS. Conduits should be concrete encased when buried underneath roadways or when used for medium-voltage applications. Minimum size for conduits used for medium voltage should be 129 mm. Generally, conduits serving exterior pole-mounted lighting fixtures should be 53 mm in size. Direct-buried conduit is acceptable for electrical systems rated 600 volts and below. Rigid steel may be direct-buried if coated with asphalt paint or PVC coating.

PVC electrical conduit for underground runs should be a minimum of type EB if concrete encased or schedule 40 if direct-buried. Marking tape indicating “Electrical Cable Buried Below” should be installed in accordance with the latest applicable industry standards. All empty ducts should be provided with 4 mm minimum diameter nylon pull wire for pulling future cables.

All empty ducts should be sealed to prevent water seepage into the handhole or manhole. Ducts should be sloped to prevent water drainage into the building.

Prior to pulling cable into any conduit (whether new or existing), the conduit should be cleaned with a wire brush 16 mm larger than the duct and rodded with a mandrel 8 mm smaller than the duct to test the integrity of the duct.

Credit: Large PVC Duct

Large PVC DuctPlease Contact Us to discuss your Large PVC Duct needs. You design it, we build it.

  • Fume Hood
  • PVC Duct
  • Acrylic Fabrication
  • Laminar Flow Hood
  • Cylinder Graduated Reading
  • Fume Hood Laboratory
  • Grillwork
  • Polyethylene Duct
  • Chemical Fume Hood
  • HDPE Tank
  • Plastic Flange
  • PVC Wye
  • HDPE Duct
  • Water and Air Treatment Home
  • Exhaust Ventilation System
  • PVC Damper
  • CPVC Duct
  • Fume Hood Mfg
  • Exhaust Fume Hood
  • Flange Plastic
  • Plastic Flange Bearing
  • HDPE Flange
  • Lexan Fabrication
  • Acid Fume Hood
  • Fume Hood Manufacturer
  • Laminar Air Flow Hood
  • PVC Duct Fittings
  • Uhmw Machining
  • Fume Hood Labconco
  • Cylinder Diagram Graduated
  • PVC Cone
  • Acrylic Cone
  • Benchtop Fume Hood
  • Lexan Machining
  • Walk In Fume Hood
  • HDPE Coupling
  • Large PVC Duct
  • Drape Forming
  • Clear Polycarbonate Pipe
  • CPVC Wye
  • Plastic Fume Hood
  • PE Flanges
  • PVC Reducing Wye
  • Polyethylene Flange
  • PE Coupling
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