Flat square vacuum box with arrow vacuum indicator gauge and valve handles. This vacuum box aims at the leak test which is based on the bubble test and is used on welded joints and flat surfaces.

Viewing area is 9,05x9,05 in.

The vacuum box could be used for checking:

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

• 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).
• Square viewing area of the vacuum box (9,05x9,05 in) makes the process of inspecting quicker because of less number of the box pressing.

• vacuum box with arrow vacuum indicator gauge and valve handles;
• ticket (with a manual);
• package.

Compliance with standards:

• Patent No. 2636409 dated 11/23/2017 issued by Federal Service for Intellectual Property.

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