SPIRAL DUCT CONNECTION SYSTEMS

There are several ways to connect spiral and/or round duct. Depending what the system designer is trying to accomplish, MKT can assist by providing the connections best suited to the application. Connection materials will be the same as the duct itself. In coated situations, connections can be coated as well.

SPIRAmir® is a patented product and represents a unique and convenient way of joining spiral duct and fittings. SPIRAmir® self-sealing spiral duct system uses O-Ring gasket. This gasket rotates easily between two grooves placed on the SPIRAmir® fittings. The first groove is the initial place of the O-Ring. When a fitting is inserted into the spiral duct, the O-Ring gasket rotates and moves over the teeth from the first groove to the final groove. The rotation of the O-Ring moves the pipe over the fitting.

	Spiramir Sealed Spiral System SPIRAmir® fittings are fitted with a removable O-ring gasket. SPIRAmir® fittings can be taken apart easily after connections have been made. SPIRAmir® fittings far exceed SMACNA's medium pressure/high velocity requirements. SPIRAmir® O-Ring is made from EPDM sponge rubber cord and is resistant to ozone, sunlight, weathering, aging, temperature fluctuations.
	Crimped For installations where economy is priority Less parts/Less time Faster installation time Requires sealing in the field if necessary
	Coupling MKT recommends using slip in couplings up to 24" diameters Quick, simple, relatively inexpensive Light to moderate strength characteristics Requires sealing in the field if necessary
	Quick Sleeves Airtite For 3" to 14"applications Can be disassembled for inspection/cleaning Puts no protrusions into airstream Quick assembly, 1 bolt tightening Polyethylene gasket for positive seal
	Flanged Simple installation process Can be installed on-site Shop installation has proven to: protect the ends of spiral in transit reduce labor time in the field Available in 8" to 72" in standard 2" increments Requires sealing in the field or the shop if necessary
	Spiralmate Self Sealing Time and labor saving Adjusts automatically to slight duct diameter variations Offers inner ring for use with Spiralmate on Double Wall spiral connections Has been lab tested to 18" positive WG and 10" negative WG
	Angle Rings Typically used in heavy, industrial applications Larger diameter and gauge spiral/round duct uses angle rings Can be used in conjunction with "van stoning" on the round duct for a "slip ring" capability Requires additional gasketing if required Available in all materials including galvanized, pricing and availability on request

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