HVAC

Circular Duct Connectors

VerroLoc circular flange ring system or circular duct connectors are designed specifically to provide an economical method of jointing for circular ducts, suitable for straight seamed or spirally wound ductwork. The VerroLoc system comprises two flange profiles produced to suit the required duct diameter; each flange is complete with an integral sealant providing an airtight ductwork connection when correctly fitted to the end of the duct section. On site the duct sections are assembled using the provided VerroLoc closure ring, the accuracy of our production ensures that a minimum amount of effort is required to fit the flange on to the duct. Our VerroLoc Circular Flange Ring System reduces fabrication and installation time of conventional RSA flanges and provides easy removal of ductwork sections for cleaning and maintenance purposes. In the absence of established industry testing procedures, the VerroLoc Circular Flange Ring System was independently tested in accordance with the HVCA air leakage test procedures for Ductwork Jointing Systems DW/TM1.

  • VERROLOC SYSTEM 10
    VERROLOC SYSTEM 10
    • Ranges from 100mm - 280mm in size.
    • Suitable for straight seemed or spirally wound ducts.
    • Reduces fabrication and installation time compared to RSA Flanges.
    • Easy removal of duct sections for cleaning or maintenance purposes .
    • Accuracy of production ensures minimum efforts to fit flange ring to duct.
    • Easier installation in confined spaces when compared to RSA Flanges.
    • Independently tested by BSRIA, proven to work within requirements of UK HVCA Specification DW144.
    • A sealant pocket is rolled into the profile allowing effective sealing of ring to duct. Permanent non-setting, non-toxic sealant can be injected into the profile if requested.
    • Quick closure and release latch with safety wedge available up to 900mm diameter for rapid removal of duct sections.
    • Manufactured from Galvanised Mild Steel for corrosion resistance, avoids need for secondary painting. Also available in 304L & 316L Stainless Steel.
  • VERROLOC SYSTEM 15
    VERROLOC SYSTEM 15
    • Ranges from 300mm - 355mm in size.
    • Suitable for straight seemed or spirally wound ducts.
    • Reduces fabrication and installation time compared to RSA Flanges.
    • Easy removal of duct sections for cleaning or maintenance purposes .
    • Accuracy of production ensures minimum efforts to fit flange ring to duct.
    • Easier installation in confined spaces when compared to RSA Flanges.
    • Independently tested by BSRIA, proven to work within requirements of UK HVCA Specification DW144.
    • A sealant pocket is rolled into the profile allowing effective sealing of ring to duct. Permanent non-setting, non-toxic sealant can be injected into the profile if requested.
    • Quick closure and release latch with safety wedge available up to 900mm diameter for rapid removal of duct sections.
    • Manufactured from Galvanised Mild Steel for corrosion resistance, avoids need for secondary painting. Also available in 304L & 316L Stainless Steel.
  • VERROLOC SYSTEM 20
    VERROLOC SYSTEM 20
    • Ranges from 400mm - 900mm in size.
    • Suitable for straight seemed or spirally wound ducts.
    • Reduces fabrication and installation time compared to RSA Flanges.
    • Easy removal of duct sections for cleaning or maintenance purposes .
    • Accuracy of production ensures minimum efforts to fit flange ring to duct.
    • Easier installation in confined spaces when compared to RSA Flanges.
    • Independently tested by BSRIA, proven to work within requirements of UK HVCA Specification DW144.
    • A sealant pocket is rolled into the profile allowing effective sealing of ring to duct. Permanent non-setting, non-toxic sealant can be injected into the profile if requested.
    • Quick closure and release latch with safety wedge available up to 900mm diameter for rapid removal of duct sections.
    • Manufactured from Galvanised Mild Steel for corrosion resistance, avoids need for secondary painting. Also available in 304L & 316L Stainless Steel.
  • VERROLOC SYSTEM 30
    VERROLOC SYSTEM 30
    • Ranges from 1000mm - 2000mm in size.
    • Suitable for straight seemed or spirally wound ducts.
    • Reduces fabrication and installation time compared to RSA Flanges.
    • Easy removal of duct sections for cleaning or maintenance purposes .
    • Accuracy of production ensures minimum efforts to fit flange ring to duct.
    • Easier installation in confined spaces when compared to RSA Flanges.
    • Independently tested by BSRIA, proven to work within requirements of UK HVCA Specification DW144.
    • A sealant pocket is rolled into the profile allowing effective sealing of ring to duct. Permanent non-setting, non-toxic sealant can be injected into the profile if requested.
    • Quick closure and release latch with safety wedge available up to 900mm diameter for rapid removal of duct sections.
    • Manufactured from Galvanised Mild Steel for corrosion resistance, avoids need for secondary painting. Also available in 304L & 316L Stainless Steel.

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