The Precision Oiltools IPV3 is a bi-directional completion isolation barrier using the successful IPV1 platform. Utilising identical, field proven, sealing and patented equalising barrier valve technology whilst also incorporating the unique robust shear open reliability found in the IPV1. The IPV3 assures trouble-free intervention-less completion deployment.This tool is designed for intervention-free packer setting, completion testing during deployment, liner-top isolation, and completion suspension barriers (such as batch completion and fluid-loss management), offering a pre-closed ball barrier, single or multiple pressure cycle opening options, an optional self-fill module with circ sub integration, and a gas-tight barrier from below, with contingency options available. It provides several benefits including elimination of intervention during completion deployment, a simple and robust design, low cost, mechanical contingency operation, HPHT capability, full bore ID when open, and no debris upon opening.