Welch Model 1398 Vacuum Pump. Rebuilt Welch Model 1398 Two Stage Rotary Vane Vacuum Pump. 3 HP Motor 208-230/460 V 3 PH. This item is in the category "Business & Industrial\Hydraulics, Pneumatics, Pumps & Plumbing\Pumps & Pump Accessories\Vacuum Pumps\Other Vacuum Pumps". The seller is "nevac-bob" and is located in this country: US.