HFC Enterprises LTD, L.P. - Logo
HFC Enterprises LTD, L.P. - Logo

Spiral pipe connector - used all over the US

The most rigid spiral pipe connector
on the market!

get in contact

HFC Enterprises LTD, L.P. - Logo

Spiral pipe connector - used all over the US

The most rigid spiral pipe connector
on the market!

get in contact

The most rigid pipe connector

The most rigid pipe connector

  • tremendous stabilization and power
  • save time on labor!
  • don't let your pipes collapse!
  • quick lead time
  • patented technology
  • ideal for oval and large size round ductwork

Per SMACNA 2005 Duct Construction Manual and Guidelines

DuraFlange small

The DuraFlange small profile has an Ei reinforcement rating of 43 equal to 1½ x 1½ x 3/16 reinforcement angle Iron

DuraFlange large

The DuraFlange large profile has an Ei Reinforcement Rating of 90 equal to 2 x 2 x 3/16 Reinforcement Angle Iron

ideal for oval and large size round ductwork

The Most Stable and Rigid HVAC Ductwork created by HFC Enterprises, one of the Best Duct Manufacturers.

HFC Enterprises is one of the best duct manufacturers who developed DuraFlange Duct Connection System to the HVAC ductwork market place in 2004. Based in Southern California, we have 20+ years of industry experience creating and manufacturing high quality innovative products. HFC Enterprises started off by supporting the mechanical contractors and duct manufacturers in Southern California and Las Vegas. Shortly after, we expanded across the nation and to Canada. Our minimalist approach to product design and vast manufacturing and engineering knowledge has led us to create the most rigid spiral pipe connector on the market—DuraFlange.

The patented DuraFlange design incorporates a rod into the outside perimeter of the flange for additional rigidity, making it ideal for oval and large size round ductwork. The flange can be constructed using a variety of 18 and 20-gauge materials including stainless steel, aluminum and paint lock. The DC ring, when used in combination with round DuraFlange rings, eliminates the need for a gasket in between the connecting flanges and creates a leak free seal. The DuraFlange System not only provides contractors with a quick and easy way to connect and install ductwork, but it provides energy conscious engineers and developers a leak free HVAC system. Air Balance Company, Inc. has tested the DuraFLange and their results conclusively show that, from 6” negative W.G. up to 10” positive W.G., the DuraFlange connection is leak-free and structurally sound.

We believe that designing and manufacturing the best products needs to be coupled with excellent customer service in order to succeed. We have assembled a highly knowledgeable team of representatives and sales associates who are ready to answer all of your questions and provide you with technical data for your engineering needs. Contact us today to learn more about our catalog and products!

Our Projects

The proof of our claims can be seen in the success of the projects that have utilized our products, some of which include:

  • Boeing – Huntington Beach. CA
  • California State University of Northridge – Northridge, CA
  • Los Angeles International Airport – Los Angeles, CA
  • Metro Gold Line Subway – California
  • Rancho Santiago College – Santa Ana, CA
  • University of California, Irvine – Irvine, CA
  • West Hills Hospital – West Hills, CA
  • Caesars Palace – Las Vegas, NV
  • Encore – Las Vegas, NV
  • Trump Towers – Las Vegas, NV
  • Wynn – Las Vegas, NV

Installation process for DuraFlange

Installation process for DuraFlange

Step 1

At an angle gently slid the flange on to the Spiro duct, make sure to overlap the flange inner wall before the Spiro duct inner wall.

Installation process for DuraFlange

Step 2

Once the flange inner wall is set inside the Spiro duct, place the rest of the flange in the same manner.

Installation process for DuraFlange

Step 3

Use the rubber hammer to nock the flange from the side to sit in inside the outer wall of the flange.

Installation process for DuraFlange

Step 4

Make sure that the flange is sitting inside the outer wall of the Spiro duct. Then gently ease the rest of the flange in.

Installation process for DuraFlange

Complete

Note from Step 2, the flange inner wall is sitting inside the inner wall of the Spiro duct.

Our associations:

SMACNA
SPIDA
Sheet Metal Workers

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