Replacement Hardened Pipe Base for Thompson II Abrasive Metering Valve 1-½. This is a common wear part on the Thompson valve II. Highly recommended to keep replacement on hand to minimize downtime. BlastOne is a global supplier of abrasive blasting systems and consumables. We have multiple locations throughout North America. Our range includes rental abrasive vacuum systems, abrasive blasting robots, abrasive blasting media and industrial coating equipment.