The Pittsburgh Seam Closer automatically closes Pittsburgh locks on straight ducts and elbows, at up to 15 m/min. It runs quietly and is easy to operate and service. The machine takes sheet up to 1.0 mm and needs single-phase 230 V plus a 6 bar air supply (catalogue: Pittsburgh Seam Closer, PSC).
General Features
- Closes Pittsburgh locks on straight ducts and elbows automatically
- Working speed up to 15 m/min
- Easy operation and easy service
- Low-noise operation
- Power 2.2 kW on a 230 V single-phase supply
- Air requirement 6 bar, 12 L/min
Technical Specifications
| Model | Max. sheet thickness (mm) | Working width (mm) | Working speed (m/min) | Length (mm) | Width (mm) | Height (mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|
| PSC | 1.00 | 1250–2100 | 15 | 3140 | 760 | 1650 | 500 |
Further specifications: power 2.2 kW · 230 V / 1 Ph / 50–60 Hz · 10 A · air requirement 6 bar, 12 L/min.
Sheet thickness capacities are given for ST37 (S235JR) mild steel, yield strength 235 N/mm² (24 kg/mm²). EBR METAL reserves the right to change models and technical specifications without prior notice.
Where the Pittsburgh Seam Closer Fits in Your Duct Line
The Pittsburgh lock is rolled onto the sheet edge first, on the Pittsburgh Lock Former. The matching male edge on fittings can be prepared on the Duct Flanging Machine. Once the parts are assembled, the PSC closes the lock on straight duct and elbows. For square and rectangular duct seams, see the Duct Seam Closer. The full sequence is on the HVAC Duct Production Line page.
How the seam itself is built, and when a snap lock is the alternative, is explained in our guide Pittsburgh Lock Seam Explained.
Hand, portable and machine closing, elbows and common closing defects are covered in Seam Closers: Pittsburgh Seam Closer vs Duct Seam Closer.
Frequently Asked Questions
Can the Pittsburgh Seam Closer close elbows as well as straight duct?
Yes. It closes Pittsburgh locks on both elbows and straight ducts.
How fast does it work?
Up to 15 m/min.
What sheet thickness can it close?
Up to 1.00 mm.
What power and air supply does it need?
230 V, single-phase, 50–60 Hz at 10 A, with a 2.2 kW motor. It also needs compressed air at 6 bar, 12 L/min.