api2000NOTE: Table and sizing from API 2000 fifth edition, April 1998. TABLE 1 Bulletin API20000113. TABLE 7 TANK BLANKETING VALVE CAPACITIESAPI2000 - Free download as PDF File (.pdf), Text File (.txt) or view presentation slides on. The document discusses the venting requirements for low-pressure storage tanks. It outs the causes of overpressure and vacuum in tanks,