The Polyvance Nitrogen Plastic Welders 8000 Series feature patent-pending technology created by Polyvance to make the welders easier to maintain and use. All welders offer automatic low-flow power cutoff protection, precision flow valves to allow the user to adjust the flow to suit the thickness of the plastic, and a direct-reading flow gauge for repeatable performance. The 8000-series welders also feature a quick-change hose and wiring assembly, which makes it easy to replace a damaged hose or torch handle, reducing downtime and increasing productivity. Each welder comes with unlimited access to Polyvance's online video training library, the Polyvance mobile app, and telephone technical support.