Turning Vane and Rail

Turning vane and the accompanying rail are used in rectangular ductwork when a ninety degree bend is needed. This assembly is used in a square throat elbow in lieu of a radius elbow which can be more difficult and time consuming to build. The vanes are used to redirect airflow for increased efficiency and less turbulence or static pressure. It is important to keep air movement flowing in a ductwork system so that velocity and air volume are ensured at the terminal devices. It is also important to reduce the amount of static pressure so that air handlers are not overworked.

There are several types of vanes that may be used. SMACNA allows the use of single thickness vanes in either 2” or 4” width up to 36” in length. The 2” or small double wall vane can be used up to a length of 48”. The 4” or large double wall vane can be used up to a length of 72”

The minimum gauge of the 2” vane is to be 26 and the 4” is to be 24. The distance between the 2” vane is to be 2 1/8” while the 4” is to be 3 ¼”.

Products Product Description 

Hollow Vane

Hollow-Vane-finalDuctmate's 2" and 4" Double Vane make for a faster installation when putting Turning Vanes into square Elbows for directing air. Conklin stocks in Galvanized, Stainless and Aluminum - 10-ft lengths only. Spec Sheet
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SMACNA Chart
How To...

PROrail

PROrailThis premium Rail system installs extremely fast and utilizes winged tabs for a secure system that will not come apart once installed and does not ever require Screws. PROrail like ECONOrail is used to secure Double Wall Hollow Turning Vanes for the purpose of directing air around mitered Elbows. This system is pressure tested to 15" water gauge with no separation, and when fitted to the Double Wall Turning Vane ensures a pull out force of 57 lbs. per rail and vane tab. Precision stamped from 22 Gauge Hot Dipped Galvanized Steel, but also available in Stainless Steel and Aluminum. The most common size is 2", but is also available in 4". The only Vane in the industry that meets SMACNA on center spacing requirements.
Spec Sheet
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ECONOrail

ECONOrailThis was Ductmate's original Rail before they introduced the PROrail, the ECONOrail spacing is the same as other generic Rail systems in that it is further apart than the PROrail. ECONOrail has locking tabs that are hammered over to hold it in place though the design is such that most contractors add Screws because it can come loose. Also available in Stainless Steel, Aluminum, Aluminized, PVC Coated and Galvanneal. The most common size is 2" and is also available in 4" x 10' lengths.Spec Sheet
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High Efficiency Profile

High-Efficiency-ProfileMany hospitals and performing arts centers specify the Aero-Dyne HEP Turning Vane for improved acoustical performance and room noise. Conklin stocks the 3" Vane in 10' lengths and the 100' Coils of Rail.Spec Sheet
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Acoustical Vane

Acoustical VaneAcoustical Vane is occasionally specified for projects requiring quiet operating systems. With a perforated facing, dimpled seam and filled with fiberglass insulation similar to Duct Liner, this Vane, when used along with standard PROrail, provides an easy means for the construction of Double Wall Turning Vane Systems designed to direct air around Square Elbows.Spec Sheet
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Vane Rail

Vane-Rail-Y
Single Vane Runners are an alternative to Double Wall Vane. SMACNA standards are 4-1/2” wide 22 ga Galvanized at 3-1/4” spacing. Duro Dyne’s VR2 meets this spec and has for decades been THE Standard for Single Vane. The dimples with slits single the single wall vane; Duro Dyne makes these slits deeper and incorporates a more rigid stamping which makes the rail on the VR2 much easier to work with.

Also available but quite uncommon is the smaller version of the VR2 called JVR2. This product meets the SMACNA specification of small vane which is 2” wide material of 24 ga, 1-1/2” spacing.

VR2 is 100 ft per box ; VR2 is 200 ft per box
Spec Sheet
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SMACNA Chart