The new TeraValve abrasive metering valve is revolutionary in its ability to provide high performance, pressure hold blasting. The TeraValve operates on a diaphragm. This simplifies overall operation and maintenance. The new Schmidt extended life (XL) technology provides durability and long life, even when used with harsh abrasives. The compact size fits easily onto low clearance blast pots or blast cabinets without modification. This makes it easy to convert automatic blowdown pots to a more efficient and productive pressure hold system.