About SPIRAmir®
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Description
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SPIRAmir® is
a patented product and represents a unique and convenient
way of joining spiral duct and fittings. SPIRAmir® self-sealing
spiral duct system uses O-Ring gasket. This gasket rotates
easily between two grooves placed on the SPIRAmir® fittings.
The first groove is the initial place of the O-Ring. When
a fitting is inserted into the spiral duct, the O-Ring
gasket rotates and moves from the first groove to the second.
The rotation of the O-Ring moves the pipe over the fitting. |
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Specifications |
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SPIRAmir® Self-Sealing
Spiral Duct System has been tested by an accredited testing
laboratory in accordance with UL testing standards. The results
indicate that when testing in accordance with UL 723 and
NFPA 255 standards, SPIRAmir® Spiral
Duct System produces a flame spread index of zero (0) and
smoke developed index of zero (0). |
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II. |
Materials |
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Type / Standard |
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Galvanized:
G60 or better in accordance with ASTM A-653 and A-924. |
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Stainless
Steel: 304/2B and 316/2B in accordance with ASTM A-240. |
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Aluminum:
3003-H14 in accordance with ASTM B-209. |
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PVC
Coated Steel: 4x1 Underground, 4x4 Aboveground, and 4x1 Reverse. |
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Gauges |
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Gauges are in accordance with
SMACNA's medium pressure Duct Construction Standards. Gauges
for spiral duct and fittings are outlined in the table below. |
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Diameter
(Inch) |
Spiral
Pipe (Ga.) |
Fitting
(Ga.) |
4-14 |
26 |
24 |
16-26 |
24 |
22 |
28-36 |
22 |
20 |
38-48 |
20 |
20 |
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III. |
O-Ring |
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SPIRAmir® O-Ring
is made from EPDM sponge rubber cord and is resistant to
ozone, sunlight, weathering, aging, temperature fluctuations
(-40° F to +212° F). |
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IV. |
Construction |
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Methods |
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SPIRAmir® Fittings are
manufactured by using one or more of the following construction
methods: |
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Overlapped and stitch welded along
the entire length of the fitting. |
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Standing seam gore locked. |
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Button punched and internally
sealed. |
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Spot welded and internally sealed. |
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SPIRAmir® Pipe is
manufactured by using one or more of the following construction
methods: |
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Spiral lock seam construction. |
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Rolled construction continuously
stitch welded along the entire length of the pipe. |
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Pressure
Class |
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SPIRAmir® fittings
far exceed SMACNA's medium pressure/high velocity requirements
(+10 in. WG). |
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V. |
Connection |
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Method |
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Duct-to-duct
connections are made by using a pipe coupling. |
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Fitting-to-duct
connections are made by inserting fitting into the duct. |
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Fitting-to
fitting connections are made by using a fitting coupling. |
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Classification |
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SPIRAmir® connections
exceed SMACNA's leakage Class 3 requirements, per SMACNA's
Duct Design Manual from -20” W.G. to +12” W.G. |
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VI. |
Installation
Instruction |
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1. |
Make
sure the spiral pipe or large end fitting is pushed all the
way over and up to the bead of the small end fitting. |
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2. |
Secure
the slip connection together by using 1/8" sheet metal
screws or rivets. |
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3. |
Place
the screws or rivets 1-1/2" from the edge of the pipe
or the large end fitting to avoid cutting into the O-ring
gasket. |
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Insert
the sheet metal screws or rivets by using the sequence show
below. |
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VII. |
Advantages |
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No need for any duct sealer or duct tape, consequently SPIRAmir® "GREEN" System has the following advantages: |
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Environmentally friendly system. |
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Saves energy, due to a much tighter joint connection. |
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Lower field installation costs (about 30% to 40% saving) due to faster and easier joint connection. |
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Saving time, since connections are made faster. |
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Clean appearance, therefore, the best for exposed applications. |
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Conclusion: SPIRAmir® Fittings are ideal for your Green Applications. |
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