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Corner vacuum box with a vacuum gauge and valve handles. The box aims at the leak test which is based on the bubble test and is used on tee-butt and fillet welds (inside corner).
Viewing area – 2,95x24,80 in. Box rubber thickness – 0,98 in.
Patented in-house design for convenient control and low energy consumption of the testing operator.
Convenient system of air pumping out and in within a single push of the handle which makes the operating fast and comfortable.
Specially designed molded rubber strip makes the contact with the inspected surface more leak-tight. It helps to reach the ultimate degree of exhaustion within the box:-0,09 MPa, which exceeds PNAE G-7-008-89 and PNAE G-7-019-89 standards for IV class leak - tightness (Rules and Norms of Nuclear Power Generation Industry)
Operational tests showed that the leak-tightness in the vacuum box is kept for a long time (pressure decrease to -0,08 MPa during 20 min).
It is suitable for operating with any kind of vacuum pumps.
Valve handles basically are completed with barb connectors, but could be completed at customer’s option with a quick – detachable connector which makes in-operating vacuum box changing very fast.