An independent outside laboratory, was commissioned to perform high pressure testing on CorrView ^® in order to establish its ability to sustain high internal pressure conditions.

     As detailed in our explanation of its construction, the body of CorrView ^® is machined from one solid piece of bar stock steel having no welds or seams. The sight glass is fused into the steel in its molten state - thereby producing an hermetic glass to metal seal capable of withstanding high pressures.

     The sight glass itself has a maximum operating pressure rating of 3,000 PSI, and a burst pressure of 7,000 PSI - well exceeding the 250-350 maximum pressures found at very few cooling water or fire sprinkler applications, and then only at the tallest commercial properties.

     Until corrosion wears the front surface to the point of failure, CorrView acts simply as any other threaded pipe plug and will easily handle high pressure conditions. And until such time that the front wall dimension is penetrated, the internal pressure against the sight glass is at zero.

     Once this front metal surface wears at any point, however, its internal pressure will increase to the line pressure of the system and therefore exert that same force against the front sight glass, as well as against the internal threaded joint and O-ring which seals the sight glass assembly to the main body. CorrView ^® provides a dual sealing system between its main steel body and sight glass assembly - through the use of permanent 60,000 PSI Loctite threadlocker, and through its secondary metal to metal O-ring seal.

     Our own pressure testing at the factory established CorrView ^® to handle pressures to 1,000 PSI, yet interest was raised in certifying a higher operating limit.

     Pressure testing was performed by Affiliated MRD, LLC, a materials Testing Laboratory located in Edison, NJ. A standard 1-1/2 in. NPT CorrView ^® model was supplied for hydrostatic pressure leak testing to 2,000 PSI as per ASTM testing specification E1003-05. In order to provide an acceptable attachment for a high pressure source, the front wear surface was machined to a higher wall thickness dimension, then drilled and tapped with a 1/8 in. NPT thread.

     Pressure was introduced to the unit through this opening until 2,100 PSI was reached, thereby raising all internal surfaces to that pressure. The pressure of 2,100 PSI was held for 10 minutes without any loss of pressure or evidence of leakage. The pressure was then released from within CorrView ^® and the device examined for any evidence of damage. There was no evidence of any damage to the unit and a higher pressure was re-introduced.

     Pressure was raised to 3,000 PSI and held for 10 minutes without any noticeable loss of pressure or leakage at the unit.

     Photographs of the testing setup are offered below. We also submit the actual laboratory report following.

     The below independent certification of pressure holding capacity for the CorrView ^® corrosion monitor well exceeds any operating parameters for any building services piping. It twice exceeds the 1,300 - 1,500 PSI test pressure applied for listing of fire sprinkler service equipment for use in piping systems typically having a maximum operating limit of under 200 PSI.

    CorrView ^® was designed and constructed with safety and reliability as its first criteria, and well exceeds the demands of any application found at cooling water or fire sprinkler applications. It is manufactured and assembled in the USA using only the highest quality American components.

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