Round flat vacuum box aims at the leak test which is based on the bubble test and is used on flat, convex and concave surfaces.

The vacuum box could be used for checking:

• reservoirs,
• boilers,
• pipelines,
• fuel tanks,
• coating,
• other objects with one-sided access.

The box is completed with a vacuum gauge. The diameter is 10,24 in.

• Patented in-house design for convenient control and low energy consumption of the testing operator.
• Convenient system of evacuation/intake of air with one touch of the handle makes the operator's work with the vacuum frame comfortable and fast.
• 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.
• It is suitable for convenient operating with the vacuum pump POLIGAN. If other vacuum pumps are used it is required to get an additional pressure regulation unit.
• The 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.

• round vacuum frame with vacuum gauge and valve knobs;
• passport (with instructions);
• packaging.

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