K1657-5 - Lincoln Electric 8-inch Duct Flange Adapter for LFA and LTA Extraction Arms

Professional Connection for Central Fume Extraction

The Lincoln Electric K1657-5 Connector is a critical component for facilities utilizing central fume extraction systems. Designed to bridge the gap between individual workstation equipment and the facility's main exhaust infrastructure, this connector ensures a seamless transition for airborne particulates. When installing wall-mounted extraction arms, such as the Lincoln LFA and LTA series, connecting them efficiently to the main ductwork is paramount for maintaining air quality standards and system pressure.

Constructed from high-grade polypropylene, this flange is engineered to withstand the rigors of industrial environments while remaining lightweight. The material offers excellent resistance to the corrosive nature of various welding fumes and gases, ensuring a long service life without degradation. The 8-inch (203 mm) diameter is a standard size for many industrial duct drops, allowing for straightforward integration into existing ventilation designs without the need for complex reducers or custom fabrication.

Installation is designed to be intuitive and secure. The flange bolts directly to the top of the extraction arm, creating a stable mounting point that aligns perfectly with the arm's internal airflow path. This direct connection minimizes turbulence and pressure loss at the junction, which is essential for maintaining the capture velocity required at the hood. By using the K1657-5, facility managers can ensure that their investment in Lincoln Electric extraction arms yields the highest possible performance in contaminant removal.

This accessory is specifically compatible with a range of Lincoln Electric's most popular wall-mount arms, including the LFA 2.0, LFA 3.1, LFA 4.1, and the low-ceiling LFA 4.1-LC models. It also fits the telescopic LTA 2.0-CW. Whether outfitting a new welding school, a heavy fabrication plant, or a specialized repair shop, this connector provides the necessary link to centralize fume control, reducing the need for individual fan units and streamlining maintenance operations.