Mar 3, 2018 · The Double Seam is also called “Acme lock,” “hammer lock” and “pipe lock” in the sheet metal trade. It is normally used in the fabrication and joining of the round pipe or in joining or piecing together two sheets of metal to form a large wrap-around section for square or …

Dec 12, 2018 · Standing S Lock allows contractor to use Slip & Drive method on Ductwork that otherwise would fall into TDC/F or Ductmate. Some contractors move away from Slip & Drive when the width of duct is 20″ or longer. This is where the Standing S Lock enters the picture.

Mar 29, 2023 · This tutorial shows how to cut and assemble sheet metal snap lock duct pipe for a residential heating and air system. Also see this related sheet metal duct installation project.

Lock the seam by making prick punch indentions about 1/2 inch in from each end of the seam. The CAP STRIP SEAM (fig. 2-60, view A) is often used to assemble air-conditioning and heating ducts.

Jul 29, 2024 · In commercial settings, snap lock duct machines are indispensable tools for efficiently and effectively fabricating ductwork for ventilation and air distribution systems.

Aug 24, 2023 · Learn how to operate the Pittsburgh Lock Former Machine for air ducts with this comprehensive manual.

This locking device eliminates any possibility of unwanted movement. The indicator not only shows the position of the damper blade once it is locked, but also makes it possible to hold the damper in the exact position desired while the locking nut is being tightened.

Mar 31, 2025 · S Lock HVAC is a galvanized steel sleeve that securely connects the top and bottom (S) and left and right sides (Drive) of rectangular duct runs. It is commonly used in HVAC systems for joining duct pieces.

Condu-Locks are threaded inserts that are installed into the ends of electrical conduit (EMT). They are available for both 1/2” and 3/4” EMT. Cut the conduit to duct size. Drive the Condu-Lock into each end using the installation tool. Then install into duct.

In circular duct work it is most common to have a self locking type of seam on the duct work that is put together by an installer. Typical examples of self locking mechanisms are reeves locks...