Nordfab rectangular to round transitions are ideal for transitioning round to rectangular ductwork or for use as a hood. The connection of the ductwork needs to conform to the shape of your house to ensure the efficient working of the HVAC system. Ductwork reducer offset fall in the category of duct transitions, though it plays a specific role in the ductwork system. Generally, the distance should not exceed 200mm. Hood Transition Fan Boot - Known as a Fan Boot or Range Hood Boot, this product starts the duct run on a vented range hood. Optional Ducting Accessories: Transitions Made for fan and hood installations Galvanized steel construction Not returnable. Compare. Measure the diameter of your round duct. Duct Transitions & Connectors (230 products) Duct Boots Duct Tees & Reducers Duct Elbows Duct Wyes Duct Cleats. Rectangular (950) Round (1564) ... Click to add item "10" S Cleat Duct Fitting - 4 Pack" to the compare ... Click to add item "2 1/4X10X6 Round Toekick Duct Fitting" to the compare list. Duct sizing can get very technical when taking friction losses, flow rates, velocities, surface tension, material composition and hydraulic diameters into consideration. This is instrumental in ensuring the flow of fresh air from the main duct to branch ducts during air distribution. The fitting helps route the ventilation ductwork with liberal modifications of all duct dimensions and offsetting the centreline by any value in both directions. Round Reducer The Master Flow 6 in. Sometimes you will have them produced as an “additional” i.e. There are several HVAC duct transitions you can use to connect the duct trunks and pipes. In some instances, space availability may compel you to apply rectangular ducting. Duct transitions are instrumental in connecting the duct trunks and pipes in your HVAC system. Equivalent Duct Calculator (Round vs Rectangular) Biyang Duct Transition also covers Flexible Duct Transition, also named Flexible Duct Connector. Hello Everyone, As you can see I am a novice about MEP. This product is proudly made in the USA using galvanized steel construction for durability and rust prevention. Therefore, the cost of the rectangular duct should be proportionately high, since it has 32% more metal in it. In addition, with our laser cutting machine, stamping machine and bending machine, it is very easy for us to custom your own Duct Transition based on Sheet Metal Transition at a relatively cheap price. Converting a rectangle to round sheet metal duct work is something that is common in HVAC. Do not place the transition onto the end of modeled duct. The popular item is like 8 inch round to rectangular transition, 10 inches round to rectangular duct transition and so on. As an experienced and professional HVAC Duct and Duct Fittings manufacturer, Biyang offers a wide range of products in this field. 31 $40.33 $40.33 x 7 in. A straight boot duct transition finds use when the duct run is already straight, where you use it to convert the ductwork into a vent. All Right Reserved, Different kinds of Duct Transitions available, Custom service and setting-up team to your site. Use for duct transitions from rectangular to round; Diameter. Seal seams with code-approved mastic, sealant or duct tape (not included). A duct reducer helps in maintaining a higher velocity airflow, implying that the air will go to farther areas of your home. When your duct transition system is losing pressure, it could be because of leaks. T duct transition – Photo courtesy: Perfect Home Designs. Select an adapter that will convert between the round and the square duct sizes from your local building supply center; for example, our original 8-inch round duct should be mated to the 10-inch by 5-inch rectangular duct because they have the same cross-sectional area. round duct; 30-Gauge galvanized steel construction for longevity; 1-piece design for easy installation; Designed for indoor venting and ductwork Nordfab is quickly replacing spiral duct as the new standard for industrial round duct applications. The material used for making the sheet metal can either be stainless steel or galvanized steel. Besides the HVAC Duct Transitions, Biyang also customs your own Duct Transitions, such as the clothes dryer transition duct, round duct transition, square to round duct takeoff and so on. Duct Reducers are the ductwork fitting in HVAC systems that you utilize when you want to switch from one duct size to another. The table is based on the ducts friction loss formula.. For instance, 8 inches. Biyang is a professional supplier for all kinds of HVAC ductings and fittings in China. The angled boot offers a 90-degree angle, which enables the ductwork to switch directions from horizontal to vertical. Biyang can customize your duct transition system to meet any installation requirement and provide transitions from one size to another. These components function together to form pathways across your home that blow in pleasant air into your living spaces. This allows HVAC system technicians or assemblers to get low cost high-quality duct fittings. Multiply this number by 3.14 (pi) to get the area of the round duct in square inches -- for example, 16 x 3.14 = 50.24 square inches. Boot transition is framed into the ceiling or floor, with the rectangular section facing the room. We were in charge of all the HVAC ductwork set up at Shanghai Disneyland, National Exhibition and Convention Center and Samen Nuclear Power Station among other projects. Contact Us Now. In some circumstances, however, space availability may require you to use rectangular ducting. Flat “S” Cleat paired with Drive Cleats, iv. She has years of experience as a professional of the English language employed with the "Cape Times" and "The Mercury." We understand that in most HVAC works, handling of the HVAC duct fittings can be the most difficult task, particularly for renovation projects. Our quality control department meticulously inspects the HVAC fittings to guarantee perfection and maximum durability. We have a full product line offering you a one-stop shop. Select a size of square duct that has the same area. This person is measuring the diameter of a tube, By creating an account you agree to the Hunker, The Engineering Toolbox: Rectangular and Circular HVAC Ducts. It also helps get air to extractor duct and exhaust duct. This is because cleats require less space for assembly in comparison to G-clamps. The right duct transition minimizes restriction and aids to balance airflow. Duct transitions help in connecting the duct trunks and pipes of your home’s HVAC system. Compare. Available in 1 Finish. The equivalent diameter is the diameter of a round duct that for equal airflow provides similar resistance or pressure loss as an equivalent rectangular duct. The raised speed will thrust more air across the duct transitions, increasing static pressure and the quantity of CFMs pumped to every area of the home. You can also learn more from: Duct Sizing Charts and Tables. In there you can assign the fittings, like the transition. For you to convert a rectangular duct to a round duct, you will first have to calculate the equivalent diameter of the round duct. For that matter, Biyang can send over a special technician team to your site to help you solve the problem. We have a better understanding of the freight Logistic sector in China, and our experience and network may help you save cost in shipping. The formula is generic and you can use any unit. This will resolve the issue indefinitely, though maybe more costly than just balancing your duct transition system. Also called reducing laterals or wye joints. Effective transitions from 3-1/4 in. View Technical Specification. Connectors mainly play the role of strengthening fittings, as well as for joining two ducts. Biyang Duct Transition, also called Duct Connector is a critical and indispensable part of HVAC ductwork. When it is a simple airflow issue, they can rectify it by shifting balancing dampers into different positions to equalize the flow of air to each space. Air moves easier through round ducts than rectangular ducts, so rectangular ducts need to be larger. x 10 in. At times, the design of HVAC ductwork system may require that the primary duct feeds air into branch ducts. Shop for Duct Square-To-Round at Ferguson. From the explanation above, we realize that duct reducer is a specific type of duct transition. You can find this by multiplying the length by the width of the rectangular duct. For example, you should mate 8-inch round duct to10-inch by 5-inch rectangular duct since they have equal cross-sectional area. It is a special kind of HVAC duct transition critical in making fabric compensators. In addition, there is also 45-Degree Wye Saddle important for splicing into an existing line of round pipe of equivalent or larger diameter. Our in house manufacturing plant gives us the freedom and flexibility to custom fabricate any duct system to the unique specific needs and requirements that our customers desire. As a leading Duct Fittings supplier, Biyang has all kinds of Duct Transitions and Connectors. For instance, guiding fresh air to the supply air diffuser from the blower, or exhaust air to the exhaust air diffuser from the extractor. As air flows from a larger to a smaller duct, it will register an increase in velocity. For example, if you found a duct that measured 10 inches by 5 inches, its area would also be 50 square inches. Choose a square or rectangular duct with the same area as step 4. Divide the diameter by 2 to get the radius of the circular duct cross-section. clear. You can calculate the equivalent diameter of a rectangular duct measuring 500 mm x 300 mm as, de = 1.30 ((300 mm) (500 mm))0.625 / ((300 mm) + (500 mm))0.25. Our primary drive is to fabricate and supply our clients with products that reflect superior strength, high tensile strength, low leakage rate, and durability. Or, if avoiding other mechanical services comprising of electrical installations or pipework. This transition piece changes the ductwork shape from rectangular to round. Master Flow - 3-1/4 in. Choose a duct transition that will switch between the round-to-rectangular duct sizes from your local building supply shop. Therefore, flexible connectors usually play the role of a connecting fitting between ventilation ducts and devices or fans. Sizing is dependent on airflow requirements per cubic foot per minute, together with velocity. However, normally our MOQ for ducting transitions is 500pcs per item. As a rule of thumb, size rectangular ducts slightly larger than circular ducts in terms of cross-sectional areas, due to increased surface areas in rectangular ducts. This is made of galvanized steel sheet on both sides with different fabric cloth, including canvas, polyester, and glass fiber with silicon coating. Alexander holds a master's degree in English literature from Stellenbosch University in South Africa. Actually, the average home HVAC duct system loses around 20-30 percent of its air due to leaks brought about by aging tape and sealant. Friction Loss Calculator for Flexible Ducts. When using cleats as duct transition, you should cut them in lengths 70-100mm and use them in distances not exceeding 300mm. rectangular.9 It should also be mentioned that a rectangular-to-rectangular transition duct of constant cross-sectional area has often been employed for studying the rapid distortion of a homogeneous turbulent flow.10-1 In these studies measure-ments were concerned with the distortion of … They conduct this by establishing the airflow at every duct. An 18 inches diameter round duct, for instance, has a similar air-carrying capacity as a 26 inches wide and 11 inches high rectangular duct. Hunker may earn compensation through affiliate links in this story. Every duct system comprises of numerous transitions, from rectangular to round and from trunk lines to branch lines. A llows connections from rectangular grilles to round ducting.. For example, if you found a duct that measured 10 inches by 5 inches, its area would also be 50 square inches. Provided by . Also referred to as Tee, T duct transition is appropriate for branching a main duct run or a branch ductwork line with a 90-degree angle. The reducer is used to transition from a 6 in. We can customize HVAC ductwork transition systems, round duct transition, clothes dryer transition duct, and square to round duct takeoff among others. Broan 413 3-1/4" x 10" to 8" Round Duct Transition, NA 4.5 out of 5 stars 16 Broan/Nutone 412H Round Transition Duct for Range Hoods and Bath Ventilation Fans - 7 It is because of oversight during the process of design, or unforeseen obstacle at the job site. They come in various shapes consisting of round, rectangular and oval. Cleats are popular ductwork fittings for essential in the connection of air ducts. Compare. View. Product information Size Name:10x10 inch square & 10 inch round… In addition, they as well ensure that air reaches the correct spots or locations. Fittings known as take offs enable the diversion of the correct proportion of airflow from the main duct into each branch. However, before you purchase one, ensure you measure the area of cross-section of both types of the duct. The size of ducts and duct transitions system depends on the size of the HVAC system installation design as well as cooling or heating space aspects. x 4 in. Specifically, aluminum is comparatively light and facilitates ease in installation. You can calculate a rectangular duct equivalent diameter as (Huebscher), a= length of major or minor side (mm, inches), b= length of minor or major side (mm, inches). Compare. For instance, if you find a duct measuring 10 inches by 5 inches, its area will be 50 square inches. The popular item is like 8 inch round to rectangular transition, 10 inches round to rectangular duct transition and so on. $32.31. Duct transition equally helps to guide air to the extractor and exhaust ducts. Find application in HVAC ductwork systems for a transition from a single pipe to two pipes. ' Transition Duct, Duct Size 4 1/2 x 18 1/2 to 10 In Round, Height 8 In, Construction Material 30-gauge Galvanized Steel, For Connecting a Rectangular Duct to a Round Duct, For Use With G2892495, G1604416, G2877734, G2834596, G2738802, G0681773, G2514565 and G0262272 ' HVACQuick Custom Square to Round Duct Transitions. Yes, Biyang can offer duct transition CAD drawings and designs. Duct Direct 8610 Wallisville Rd. This is a familiar problem in houses that have had non-identical size HVAC units fitted, or have new add-ons installed, or renovated rooms. BR-411: 3-1/4" x 10" to 6" round transition made to fit fan and hood outlets that must fit to 6" round ducting Buy QF Transition Rectangular to Round* online. They are appropriate sheet metal fittings for sustaining maximum airflow across your system while switching to the required duct size to fit into tighter spaces. The FAMCO SDB transitions a square air duct to a round duct. Select the duct and go to Edit Type. In your home heating/air conditioning system, you have ductwork to push air through your home. Materials used for the construction of duct transitions are hardy, durable, and reliable. Flexible duct connectors comprise of a fabric, for example, glass fiber with PU coating or polyester with PVC coating, which you attach to the sheet metal on both ends. In case you have balanced the ductwork, yet it is not attaining the correct airflow, you can adjust the motor speed of your unit to boost the airflow per minute to every room. x 3-1/4 in. On the other hand, when it flows from a smaller to a larger duct, it will register a decrease in velocity. i. Poor installation, undersized ducts, crushed, kinked, or damaged ducts are typically the causes of restriction in duct transition. to 5 in. There is also T saddle duct transition which is essential in splicing into an existing line of round pipe of equivalent or larger diameter. Equivalent Duct Calculator. pipe in an HVAC system. Ferguson is the #1 US plumbing supply company and a top distributor of HVAC parts, waterworks supplies, and MRO products. The finding will help them establish where you may need to replace or alter the duct transition system in your home. Shop duct transitions & connectors and a variety of heating & cooling products online at Lowes.com. Aluminum and galvanized steel are the most popular materials for the construction of sheet metal duct transitions. Biyang Duct Transition also helps ensure the air to reach the right locations or spots, such as getting fresh air from the blower to the Supply Air Diffuser, or exhaust air from the extractor to Exhaust Air Diffuser. Boots are fittings that are rectangular on one end and circular on the other, which enable it to connect to ductwork round pipe. Duct Transition is an essential and indispensable component of HVAC ductwork. rectangular to 6 in. The technicians can as well detect leaks in duct transitions that are negatively impacting on the pressure. Generally, sheet metal is the most secure and effective material for the construction of duct transitions. Balancing a HVAC duct transition system means managing this restriction to lead air in the appropriate direction. It is this restriction that brings about airflow imbalance within the ductwork system. However, the usage is not fixed and differs depending on the geographical area or location where you will be performing the work. Both duct types come with advantages and disadvantages, and each finds use where one is superior to the other. Duct transitions come in a myriad of materials and sizes and can either be rectangular or cylindrical. - … Category. Gustafson G-0 single wall round Rectangular to Round Conversion De = 1.30 [(ab)0.625/(a+b)0.250] a = length of one side of rectangular duct (inch) b = length of adjacent side of rectangular duct (inch) De= circular equivalent of rectangular duct for equal friction and capacity (inch) Source: 2001 ASHRAE Fundamentals, p. 32.10 Example A certified HVAC expert can locate the leaks and secure them, reinstating the pressure in the duct transition system. Another mechanism through which your HVAC expert may balance airflow in the duct transition system is to raise the speed of the fan of your unit. This can be found by multiplying the two adjacent sides of the rectangular duct. The round connector is male in the standard version. nordfab.com is an authorized Nordfab Part stocking distributor offering a full line of products at exceptional prices. For instance, 16 x 3.14 = 50.24 square inches. Speedi-Products EX-DBK 04 18-Inch by 24-Inch Length Dryer Box, Periscope and 2 Rectangular to Round Transitions 4.2 out of 5 stars 52 $38.31 $ 38 . x 10 in. We boast of over 1000 popular projects experience home and abroad. In most cases, you will find them insulated. They are a common component of a HVAC duct system. x 10 in. Here are some of the common methods of balancing airflow in a duct transition system: Air flow in duct system – Photo courtesy: CIBSE Journal. Simply put, it transforms the ductwork into a vent. An end boot transition is utilized with terminations. Details. I have this silly doubt how to align a duct with the face of the wall including the transition part. The common transitions used in ductwork include take offs, specialized connectors, cleats, and boots. It features hemmed collar edges for enhanced strength and a secure fit. In the example in Step 1, 8/2 = 4 inches. You cannot install an 18 inches duct, for instance, if you have 14 inches net clear height of a furred space over suspended ceiling. Nordfab square to square transitions do not provide the same quality of airflow as rectangular to round and are designed for applications with height restrictions. Houston, Texas 77029 Phone: (713)678-8471 Fax: (713)672-0509 Toll-Free (877)774-DUCT (3828) It would be helpful if you can post a GIF or Autodesk Screencast Video. (NOTE: Round side must be equal or smaller in size to the square side of the transition box). It as well has a smaller cross-sectional area and has smaller extent of duct wall subjected to moving air. This opened the door for the use of sheet metal for ducting. 10-Inch Round to Rectangular Transition for Range Hoods and Bath Ventilation ... 10-Inch Round Duct for Range Hoods and Bath Ventilation ... 6-Inch Make-Up Air Slave Damper (damper only) 0; Model: MD6S. Bar or Angle Cleat paired with Drive Cleats. round duct Manufactured of 30-gauge galvanized steel for added durability and resilience 1-piece design for easy installation Constructed of galvanized steel. It connects the various sizes of ducting, different facilities parts, and varying materials of ventilation parts together to make sure there is a smooth and steady flow of air. rectangular to 8 in. It purposely helps in ductwork transition from larger to a smaller pipe. You can seek the services of a test and balancing expert, or a professional HVAC technician to determine the airflow in your ductwork. My final output should be like the image below. Size. This solves your problems of rectangular duct transition, rectangular to round duct transition, or round to rectangular duct transition. Among the other duct fittings we provide include: We manufacture all of our duct transitions in our factory, by our skilled craftsmen. Biyang can assist in the arrangement for shipping of your duct transition from China to your destination country. You can always request for a free sample of duct transition fittings before placing an order for the product. Take measurement of the round duct diameter, which is the broadest length from one end of a circle to the other. Find duct transitions & connectors at Lowe's today. The most popular types of rigid ductwork are Sheet metal duct transitions. Square or Rectangular ducting duct transitions come in standard sizes varying from 3-by-7 inches to 35-by-40 inches. Stack Boot provides a straight-line transition from specially-sized round pipe or insulated flexible duct to a rectangular stack duct. Example: Model a 24x12 inch duct 10' long. It will be necessary you utilize the exact duct transition for replacement, yet you might not be able to ascertain every detail. The original laser welded clamp together ducting system, Nordfab is reusable, adaptable to an existing system, installs in half the time as conventional ducting, clamps together in seconds, and is adaptable for wet/oil mist and abrasive applications.