Crush-Resistant Spiral Duct and Fittings
| Galvanized Steel | PVC-Coated Steel | |||
| Trade Size | Female ID | End Construction | Gauge | |
| 3 | 3" | Plain | 26 | 000000 |
| 4 | 4" | Plain | 26 | 00000000 |
| 5 | 5" | Plain | 26 | 00000000 |
What gauge is spiral pipe made of?
We manufacture spiral pipe in 18, 20, 22, & 24 gauge galvanized metal. Stronger than other pipe – Our pipe is up to 20% stronger than smooth pipe systems of the same gauge, due to the added spiral reinforcement. No painting required, will last years outdoors.
What is a spiral duct?
Spiral duct has always been green — long before the term came into being. The spiral duct industry started in Northern Europe at the end of World War II. As economies recovered, new and better buildings were incorporating ventilation and conditioning systems that had been developed during the previous few decades.
Is it hard to find spiral duct machines?
And round and flat oval spiral duct are neither hard to find or noncompetitive. We really hate to plug our competition, but within a 600-mile radius of our plant in Ft. Worth, Texas you can find more than 100 spiral duct machines and at least 15 ovalizers. No, availability is not an issue Do you see where we’re going with all this?
How far apart do spiral ducts need to be?
For round and flat oval spiral ducts, that support spacing is 12’-0”. 7. You’re going to need more insulation – it’s going to take more square feet of insulation to cover the increased perimeter/surface area of rectangular duct.
What is spiral round duct?
What is a spiral duct? Spiral duct is a rigid spirally wound tube manufactured of steel metal, most often galvanised steel, but also: stainless steel, aluminium or copper. Spiral ducting has female ends, therefore in order to connect two duct sections a male coupler needs to be used as a connection piece.
What is spiral duct used for?
Spiral ducting is used to transport large volumes of air from one point to another. It is a common choice of ducting product for ventilation systems. You might not need a spiral wound ducting ventilation system in your home, but commercial use is on a different level.
What are standard round duct sizes?
15-inch diameters in ½-inch-diameter increments, 16- through 38-inch diameters in 1-inch-diameter increments, and 40- through 90-inch diameters in 2-inch-diameter increments. order. Standard lengths of round longitudinal seam duct are 5 and 6 feet.
Does spiral duct have to be insulated?
Cooler air traveling through warmer areas of your home can cause condensation to build up in the spiral duct fittings. This moisture can lead to mold and mildew growth unless you insulate it properly.
Can you crimp spiral duct?
Flanges can be welded on- but only if the spiral is of sufficient gauge AND the installer is good at welding lighter gauge metal. Crimping- This method involves crimping one end and forcing it into the adjoining piece. The joint is then taped or screwed together in order to hold it together.
Is spiral ductwork expensive?
95% of spiral ductwork is galvanized. Spiral Duct 26 gauge 4″ to 12″ in diameter costs $2.87 – $8.77 per linear foot.
How do you determine duct size?
To calculate the required equipment size, divide the HVAC load for the entire building by 12,000. One ton equals 12,000 BTUs, so if a house or office needs 24,000 BTUs, it will take a 2-ton HVAC unit. If you get an uneven number, such as 2.33 for a 28,000 BTU load capacity, round up to a 2.5-ton unit.
How often does spiral duct need to be supported?
The standard recommendation is for screws or pop-rivets to be used at a maximum of 15” intervals with no fewer than three screws or pop-rivets per joint. Spiral Manufacturing recommends a maximum interval of 6”.
How do you read duct size?
HVAC ducts are sized based on the required airflow. Ducts have different forms and shapes with different dimensions....Duct Area Calculation.CFM (m3/hr)Duct Size (in)Duct Size (mm)600 (1020)14×8350×250650 (1105)14×8350×250700 (1190)12×10300×250750 (1275)16×8400×20016 more rows
How do you insulate spiral ductwork?
1:5142:03HVAC 101 Insulating round ductwork | Duct install methods (wrapping duct)YouTubeStart of suggested clipEnd of suggested clipPair crimpers if we are putting reducers on our duct it's a lot easier to crimp on the ground thanMorePair crimpers if we are putting reducers on our duct it's a lot easier to crimp on the ground than it would be to crimp up in an attic.
Does spiral duct sweat?
After running for a hour condensate is pouring from the spiral duct like a stream. The condensate pan is sweating like crazy. It is also flowing out the drain line the same. The two scroll compressors are sweating too.
Is spiral duct flexible?
If not from sheet metal, spiral ducts can be fiberglass board or a flexible plastic and wire composite.
What is round spiral duct made of?
All round spiral duct and fittings shall be manufactured from G-90 galvanized steel, conforming to ASTM and SMACNA standards.
What gauges are used for galvanized steel?
All gauges and weights are for galvanized steel. Some gauges are not available for alternate materials.
What gauges are based on?
All gauges and weights are based on 1" dual wall with perforated liners.
What is standard connection?
Standard connections are slip fit with couplings. Gasketed (up to 36”), flanged, or Spiralmate (by Ductmate Industries) connections are also available.
How to attach spiral duct to a duct?
Collars create branches from a rectangular duct. Cut a hole in the duct and use a collar to attach spiral duct.
What type of connector is needed to connect two pieces of duct?
Male straight connectors are required to connect two pieces of duct.
Why is closed duct stronger than open duct?
Closed duct is stronger than open duct because it has a seam that is already locked in place.
What is a tee connector?
Tee connectors join or split runs of duct.
Do you need a clamp for duct and fittings?
Standard Duct and Fittings. No need for clamps or connectors— duct and fittings press-fit together. Male ends are crimped or tapered, making them slightly smaller than a female end for simple assembly. 304 stainless steel is more corrosion resistant than steel and aluminum.
Button-Punch Snap Lock Seam
Spiral Manufacturing Co., Inc. single-wall, rectangular duct fittings are factory fabricated to furnish you with a high-quality line of products in a broad range of standard sizes. To minimize field assembly costs, rectangular duct is supplied in lengths up to ten feet.
Drive Slip or Cleat (A)
Drive Slip – Ends of ducts inserted under cleat. For narrow sides of ducts that are 18″ or less. Drive slips that are 19″ thru 30″ must be reinforced with 1″ x 1″ x 1/8″ angle.
Ductmate 35 – Traverse Duct Connector (E)
Ductmate 35 – Traverse duct connection systems consist of installed roll-formed flanges. Corner pieces, gaskets, and cleat complete the joint assembly. The flanges attach to duct end and have integral mastic which allows the flange to seal itself to the duct.
Companion Angles (F)
Companion Flange or Angles – Angle frames are riveted, bolted or welded to duct ends and are then bolted together with gaskets or caulking to prevent air leakage. Recommended for use where duct sections must be removed periodically. Angle iron flanges are standard mild steel. Galvanized are available along with punched holes.
What gauge is spiral pipe?
We manufacture spiral pipe in 18, 20, 22, & 24 gauge galvanized metal. Stronger than other pipe – Our Spiral pipe is up to 20% stronger than smooth pipe systems of the same gauge, due to the added spiral reinforcement. No painting required on our spiral pipe, will last years outdoors.
How big is a 22 gauge spiral pipe?
It is considerably stronger than longitudinal pipe of the equivalent gauge. All 22 gauge Spiral Pipe measures 1/16″ less than the noted diameter on the inside (I.D.). Example 6″ diameter is 5-15/16″ I.D.
What gauge is galvanized pipe?
We manufacture spiral pipe in 18, 20, 22, & 24 gauge galvanized metal. Stronger than other pipe – Our pipe is up to 20% stronger than smooth pipe systems of the same gauge, due to the added spiral reinforcement. No painting required, will last years outdoors.
What is spiral pipe used for?
Spiral pipe is commonly used in dust collection as well as other applications such as industrial ventilation, spray booth stacking, welding booths, paper trim, pharmaceutical clean rooms, etc. Spiral Pipe is easily shipped. Five-foot lengths up to 16″ diameter can be shipped via UPS or FedEx Ground for fast delivery.
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How far is a fitting from the bead to the end of the fitting?
All Fittings are 1.75” from Bead to End of Fitting. All Fittings are 1.75” from Bead to End of Fitting.
How to connect pipe to pipe?
Pipe to Pipe connections are made by using a fitting size coupling that slips inside the mating pipe sections. A stop bead runs around the middle of the coupling to center the coupling in the connection. Secure the connection by installing sheet metal screws through the outer shell of the duct, 1/2 inch from the stop bead.
What is complete seal fitting?
They feature a double legged EPDM gasket which creates a virtually airtight connection when slipped into spiral pipe. The gasket is mechanically attached to the fitting with a 180 degree hemmed edge. This hem gives added rigidity to the fittings, ensures that the gasket will never slip out of place and makes a safe rounded edge for the installer. *Complete Seal is currently available on Galvanized Fittings only.