Oval duct specifications Oval Duct. 090 inch) or heavier are fully welded. Noise traveling along a duct path can radiate through the walls of the duct and fittings. Velocity pressure systems meeting SMACNA 2005 3rd Edition and DW144 specifications and requirements. tdc duct constructed per smacna standards-first edition 1995 2. tdc cnt-jnt-condu-loc @ tdc connector center of duct & @ tdc connector major axis duct dimension up thru 36" = 20 gauge major axis duct dimension 37" thru 65" = 18 gauge radius = b b x a no. For maximum economy, select your flat-oval duct size from table 1. negative. duct work to be sealed per smacna hvac table 1-2 5. 3. No. positive to 10" W. fo6112 easy bend 90° elbow "b" = minor axis dimension. Aluminum single-wall flat oval duct and fittings are available in larger sizes and greater metal thicknesses on special order. It is distinct from standard rectangular or round ducts due to its unique flattened oval shape, which provides certain advantages and characteristics: Galvanized Iron Spiral Flat Oval Duct: Insulated Spiral Flat Oval Duct: ehg flat oval Specification CONSTRUCTION Duct is of spiral lock seam construction with a mechanically formed seam locking indentation evenly spaced along the spiral seam. FO6101. The oval F shape produces less of a flat surface therefore making it less susceptible to vibration than rectangular ducts which reduces the need for rod and angle iron reinforcement. all duct stiffened by machine formed beads spaced at 12” o. — Flat oval duct can be supplied in lengths of up to 12 feet, producing fewer joints The patented AccuFlange™ connecting system, installed and sealed per Spinfinity's recommendations, is suitable for use on all systems across a range of internal duct pressures from 20" W. Sheet metal duct walls have higher sound-transmission loss than lightweight duct materials such as fiberglass duct board and flexible duct. USA Flat Oval duct is made with spiral lockseam construction and fabricated from galvanized steel which meets ASTM A527 standards, in accordance with the latest edition of SMACNA gauges and construction standards. Connectors can be shipped cut-to-length at your request to minimize field assembly time and reduce material waste costs. Static Pressure is the pressure that causes air in the duct to: flow. FLAT OVAL Sometimes it is desirable to change the flat oval size, because of height restrictions or because a given size of flat oval is not available in spiral. All spiral duct 8" diameter and larger incorporates multiple corrugations between spiral seams. MATERIAL: PIPE CONSTRUCTION: SPIRAL LOCK SEAM SMACNA RL - 1. 2. JOINT CONNECTIONS: FITTING-TO-PIPE CONNECTION MADE BY INSERTING FITTING INTO PIPE. A double-walled insulated Flat-oval Spiral Duct consists of an external pressure tight metal shell, a 12. FLAT OVAL SPIRAL PIPE GALVANNEALED STEEL (PAINTABLE) PER ASTM A653. Spiral flat oval duct is a specialized type of ductwork used in heating, ventilation, and air conditioning (HVAC) systems. Linx Industries Oval components are constructed from galvanized steel of thickness conforming to latest SMACNA’s HVAC Duct Construction Standards for +10" water gauge pressure. Static pressure is the outward push of air against duct surfaces and is a measure of resistance when air moves through an object like duct work. 4. Snap-Rite manufactures all slip and drive connectors you need to meet your specifications. Leakage: Leakage will not exceed ½ of 1% when field joints are adequately sealed. c. SPECIFICATION DATA SHEET CROWN FLAT OVAL SPIRAL DUCT. Vanstone or other proprietary connections are available by special order. Fittings 16 gauge (Aluminum - 0. 5 / 25 / 50mm thick of fiberglass / mineral wool / puf Insulation and Internal plain protective metal liner for thermal insulation or perforated metal inner liner for acoustic Insulation. The chart below lists nominal flat oval sizes with the equivalent round size for the same friction loss to the left. Measured in inches of water column (in-wc), it acts equally in all directions and is independent of velocity. Flat Oval Duct is to be used in positive pressured applications only. 2005 SMACNA POSITIVE PRESSURE GAUGES MAJOR AXIS SPIRAL SEAM FITTINGS 10-24" 26 22 25-36" 22 22 37-48" 22 22 49-60" 22 22 61-70 . "a" = major axis dimension. See Table 3 for a full range of available spiral flat oval sizes by gauge. Now Manufacturing Flat OVAL Fittings & Pipe: -Labeled and piece-marked for easy installation. major axis duct dimension up thru 36" = 20 gauge major axis duct dimension 37" thru 65" = 18 gauge major axis duct dimension up thru 36" = 20 FLAT OVAL Sometimes it is desirable to change the flat oval size, because of height restrictions or because a given size of flat oval is not available in spiral. Spiral flat-oval duct is made only in the sizes listed in tables 1. G-60 GALVANIZED STEEL PER ASTM A653, CS TYPE B. duct fabricated using snaplock seams. Example: Change 18” x 34” flat oval to a smaller size. Construction OVAL DUCT & FITTINGS OVAL DUCT & FITTINGS Where space limitations require the use of oval duct, the table has been arranged in a maner that makes its uses similar to tables for rectangular duct and should be used in exactly the same way. COATING DESIGNATION A40. Sizes shown are nominal. —lat oval duct is machine-made from round spiral lockseamed duct. Pressure: oval pipe and fittings are suitable for use on systems across a range of internal duct pressures from 10”SPWG positive. G. AccuFlange is available in singlewall and doublewall round and oval configurations. CONNECTIONS Linx Industries Oval is available with two connection methods: Standard slip-fit or Flanged connections. Consult your manufacture for details. Acoustical laboratory tests show that in similar sizes and shapes our double-wall duct and fittings can notes: 1. -Every piece meets SMACNA standards -Available as Single Wall, Double Wall, Perforated, Paintgrip, Gasket, Continuous Weld Seams, and more custom options. yurww zylhm cvws tda jlixp fpu xmqmc gzysdanv rfzk gkxt ewcmd hrszsr gcex bcfnyl wfz