9/12/2023 0 Comments Spiral duct vents![]() Since gravity is the first force you must design for in a roof support system, you can see where a lighter duct will be desirable.Ībove is an example rooftop duct layout. Round spiral ducts are generally 30 percent less weight than equivalent rectangular ducts. And round spiral duct is typically provided in 10 foot lengths and greater. That explains the 8 to 10 feet apart recommendation when you are installing 4 and 5 foot joints of rectangular duct. But the underlying “common sense” behind those recommendations is pretty simple: have no more than two duct joints between supports. There is no comprehensive research that sets support spacing for every combination of duct size, shape, gauge and joining method. The joining methods may range from a few screws up to welded and bolted flanges. The weakest aspect of that “box section beam” are the joints between the segments. A duct section has been described as “a box section beam of considerable strength.” Round tubes make a stronger beam than square or rectangular profiles of the same dimension and thickness. For larger systems we recommend our Angle Rings (RING and RING-U).You’ve probably seen recommendations that tell you to space duct supports 8 to 10 feet apart and 12 feet or more apart for round ducts. There are Easy Connect Sleeves (ECS) and Inside/Outside Couplings (IO). We also have other options for connecting the components. Later if you wish to change your system, using a razor blade you can easily cut the silicone. By making a chemical bond, the silicone makes the connection airtight. Wipe the silicone around the outside of the connection. Secure the connection with pop-rivets and silicone caulking. A small-end coupling is used to connect sections of pipe (COUP). A large-end coupling (COU2) is used to make fitting-to-fitting connections. Fittings and small-end couplings are male-end to slip into pipe and flexible hose. ![]() This is similar to the way plumbing fittings are connected. How do you make pipe connections? We use the small-end (male-end) and large-end (female-end) method of connecting the components. Spiral Pipe Ten FootĪlso available in 10-foot lengths when you require large amounts for longer runs, call 80 for more info. Minimum required purchase amount of 40 linear feet. Spiral Pipe Five Footįive foot lengths 18″ inch diameter and larger will be shipped by common carrier. Five foot lengths up to 16″ diameter can be shipped via UPS or FedEx Ground for fast delivery. 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 and fittings along with our flexible hoses will complete your piping system. All 22 gauge pipe measures 1/16″ less than the noted diameter on the inside (I.D.). It is considerably stronger than longitudinal pipe of the equivalent gauge. Spiral Pipe DiameterĪvailable in 3-inch to 36-inch diameter in five foot lengths. No painting required, will last years outdoors. ![]() 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. We manufacture spiral pipe in 18, 20, 22, & 24 gauge galvanized metal. ![]() Price listed below is per 5 foot LENGTH for 22 gauge galvanized spiral pipe.Ģ0″ and larger, 4 to 10 working days for fabrication.Ĭlick here for pipe weight and here for allowable negative pressures in round ductingĬlick here for instructions on Cutting Spiral Pipe. Please call for pricing.Īlso available in 10-foot lengths when you require large amounts for longer runs, call 20 for more info. Five-foot lengths up to 16″ diameter can be shipped via UPS or FedEx Ground for fast delivery.įive-foot lengths 18″ inch diameter and larger will be shipped by common carrier. Spiral pipes and fittings along with our flexible hoses will complete your piping system. All 22 gauge Spiral Pipe measures 1/16″ less than the noted diameter on the inside (I.D.). Spiral Pipe is available in 3-inch to 36-inch diameter in five foot lengths. No painting required on our spiral pipe, will last years outdoors. 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. ![]()
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