Welch DirecTorr Series

Precision Plus is your reliable partner for OEM-equivalent spare parts for the Welch Directorr Series direct-drive vacuum pumps, engineered for consistent performance in laboratory and light industrial applications. The Directorr line—including models like the 8905, 8907, 8912, 8917, 8920, and 8925 — features two-stage, oil-sealed rotary vane technology with a compact, direct-drive motor design. These pumps are known for their low maintenance requirements, quiet operation, and efficient oil recycling systems, making them ideal for general-purpose vacuum applications. With built-in features such as anti-suckback protection, gas ballast valves, and thermal overload protection, the Directorr series ensures safe and reliable operation under a variety of conditions. At Precision Plus, we offer a full range of precision-engineered replacement parts—including vanes, gaskets, filters, and seals—that match or exceed OEM specifications. Our parts are designed to maintain the performance and longevity of your Welch Directorr pump while offering a cost-effective alternative to original components. Backed by expert support and fast delivery, Precision Plus helps you keep your vacuum systems running smoothly and efficiently.