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RigiDuct® Tubing |
Filament Wound Construction
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The strength of RigiDuct® is derived from criss-cross spiral rovings of fiberglass. RigiDuct® has more strength than non-filament wound fiberglass or PVC duct; yet, the tubing is as light as any other plastic duct and much lighter than metal duct. The inert qualities of the fiberglass combine with the tough resins to make RigiDuct® highly resistant to attack from acid or alkaline conditions. ABC’s RigiDuct® complies with all applicable U.S. Mine Safety and Health Administration (MSHA) regulations and requirements. |
Shapes
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Round RigiDuct® is normally used in standard mine or tunnel operations. Oval RigiDuct® is offered for areas that have limited head room. Round and Oval RigiDuct® are furnished in standard 10 foot (3m) lengths. Round RigiDuct® can also be furnished in 20 foot (6m) long sections. |
Sizes
| Standard Duty (SD) ROUND RigiDuct® is available in the following sizes: (Inside Dimensions) | ||||||
| 08" (205mm) | 18" (460mm) | 28" | (710mm) | 48" (1,220mm) | ||
| 10" (255mm) | 20" (510mm) | 30" | (760mm) | 54" (1,370mm) | ||
| 12" (305mm) | 22" (560mm) | 36" | (915mm) | 60" (1,525mm) | ||
| 14" (355mm) | 24" (610mm) | 40" | (1,015mm) | 72" (1,830mm) | ||
| 16" (405mm) | 26" (660mm) | 42" | (1,070mm) | |||
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Standard Duty (SD)
OVAL RigiDuct® is available in the
following diameters: |
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| 14" (355mm) | 22" (560mm) | 42" (1,070mm) |
| 16" (405mm) | 24" (610mm) | 45" (1,145mm) |
| 18" (460mm) | 30" (760mm) | |
| 21" (535mm) | 36" (915mm) | |
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NOTES: Extended Duty (XD) Round RigiDuct® is available in 24" diameter and larger sizes. Extended Duty (XD) Oval RigiDuct® is available in 21" and larger sizes. |
Suspension
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All sections come supplied with strong flat metal straps and metal D-rings at each end. These straps, an integral part of the tubing, can be used to lock sections together or utilized for suspension purposes in a mine or tunnel application. When ordering ABC Oval RigiDuct®, you must specify whether it will be hung vertically (flat side to rib or shaft wall) or horizontally (flat to the roof or top). This specification allows for proper placement of suspension loops and correct manufacture of the accessories. The Oval 45° Elbow, shown as Figure 2, illustrates how suspension loops can be placed on either side of the fitting to meet your application needs. |
Couplings
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RigiDuct® is supplied with standard tapered bell and spigot couplings, designed to minimize coupling air loss. This coupling has fiberglass fabric reinforced ends to reduce breaking or fraying as the tubing is handled. The bell end is color-coded for easy identification underground. Single gaskets are available to minimize coupling air loss. For high pressure applications, double gaskets are recommended. Single or double gaskets are offered as an option for all sizes of RigiDuct®. |
