hydrosmallAdditional services that Air-Care Inc offers include Hydrostatic Testing of breathing air cylinders. Our shop can visually inspect & test cylinder up to 6000 psi working pressure.

Hydrostatic testing uses water under pressure to measure the strength and flexibility of the cylinder’s walls. The test is required every three or five years depending on the DOT exemption
Cylinders are given a thorough internal and external visual inspection. The cylinder is filled with water and placed inside a water-filled jacket. High-pressure water is injected into the cylinder which causes the cylinder to expand. Pressure is held steady for 30 or 60 seconds depending on the test requirements to make sure the cylinder has reached, and can maintain, full expansion. A volumetric reading is recorded at the end of the test period. The pressure is released and the permanent expansion determined. The cylinder passes if it falls below the maximum acceptable expansion.

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