This Vapor Lock Valves is hand-operated (open/close) 2-inches ball type valve which has a sampling capacity of 0.5 liters. Gauging/Sampling/etc can be done without releasing the dangerous vapors into the atmosphere.
To avoid damage to the sensor/tape while those pass through the sounding pipe on the deck from the tank, 3-inches flange structure is adopted for this 2-inches bore valve.
