Lowell Scott Enterprises has introduced a new TrunkPump dewatering pump Lowell Scott Enterprises has introduced a new TrunkPump dewatering pump built to work with heavy equipment and other hydraulic power sources. The HYD-3D skid-steer hydraulic dewatering pump attachment is ideal for construction companies, farmers and municipalities who need to move water or irrigate, the company says. It is also capable of one-person operation, and features a low-maintenance design.