The CorrView ® monitor offers every property owner or plant operator a substantial number of benefits and advantages in comparison to other corrosion testing methods. To the water treatment professional and corrosion control consultant, CorrView ® offers a significant new tool toward providing the best possible service.

     Of CorrView's ® many advantages, first and foremost is its more realistic assessment of the true corrosion activity existing within any piping system in comparison to corrosion coupon results. Since it exists in direct contact with all the same environmental forces acting upon the actual piping or tank, it produces a far more realistic corrosion rate assessment. Read more about the limitations of corrosion coupons.


     CorrView ® is not intended nor suggested as an alternative to corrosion coupons, nor for any other corrosion monitoring process. Instead, it offers a totally new option by providing a more accurate and long term corrosion monitoring method.



     A second major advantage is it's ability to address not only those difficult to test piping areas which are generally known to present specific corrosion problems, such as low flow areas and long horizontal runs, but to monitor multiple locations at low cost and without supervision.


     In comparison to corrosion coupons and some other testing methods, the CorrView ® monitor offers substantial benefits:


 CorrView ® is inserted directly into the actual piping system rather than existing isolated in a side stream loop. Therefore, it exists and corrodes under the same environmental influences produced by electrochemical action, flow rate, turbulence, microbiological activity, dirt and particulates, under deposit corrosion, scale, and galvanic activity etc.

While corrosion coupons are excellent for judging the presence and effectiveness of a chemical product in preventing metal loss, they are simply too far removed from the actual piping environment to produce a realistic corrosion assessment. This is a well recognized and documented thought rarely discussed fault of the testing procedure.

The common presence of interior deposits is perhaps the most significant influence on pipe deterioration, yet it is never addressed by corrosion coupons. See Technical Bulletin C-4 about the problems associated with interior deposits. Other factors such as microbiological growths, flow rate, and galvanic activity are also not represented in corrosion coupon results.



Of the various corrosion testing methods which currently exist, none offers the type of information provided by CorrView ®, nor the method or ease in which it is gathered. This, in fact, is why it has been granted a United States Patent.

CorrView ® provides an operator independent, stand alone means to remotely monitor corrosion activity in an almost limitless number of applications. For little cost and effort, CorrView ® enables any property owner or plant operator the option of establishing a simple, effective, and more reliable corrosion monitoring program.



CorrView ® is installed having either a standard predefined wear dimension, or a custom thickness value set by the client. This is generally determined based upon the need for long term or short term monitoring, the corrosivity of the piping service, as well as other factors relating to the piping system and individual interests.

A corrosion rate estimate, therefore, is simply a calculation of that initial wear dimension divided by how long it was in service when the color change indication took place. There is no follow-up laboratory fee or handling involved.

CorrView ® enables anyone to easily establish a corrosion monitoring program either as a primary investigative tool, as a safeguard mechanism, or as an independent check-up of others.



As a small, self contained and low cost unit, CorrView ® allows the monitoring of multiple piping areas instead of just one or two. This greatly extends test coverage, improves the probability of being alerted to a localized corrosion problem, provides redundancy, as well as increases the reliability of all other test methods and results.

As with every other form of testing, the greater the number of sampling points, and the greater the number of individual tests performed within those sample points - the more accurate and reliable the final corrosion rate determination. Review a listing of common problem piping areas.



Most corrosion problems are established after many years of service, and increase in severity over time. That increase is often gradual, or in the case of MIC or under deposit corrosion, may develop rapidly - perhaps within a few years. In such examples, it is the surface conditions at the pipe itself, having developed over many years, that become the major contributor to an overall corrosion problem.

Aside from the fact that corrosion coupons exist in an isolated side stream loop, they are typically replaced every 1-4 months with new samples, and therefore never experience any long term corrosion effects.

In contrast, CorrView ® remains in place within the pipe itself, and wears under the same operating conditions. As such, it suffers the same cumulative corrosion losses often identified as being the cause of many piping failures and system operating problems.



CorrView ® is ideal for monitoring any area of pipe where little or no flow may exist to route water to and from the corrosion coupon rack. By definition - high corrosion locations which are typically never addressed.

It is extremely well suited for piping which is periodically drained down and known to corrode at substantially higher levels - such as exists at the roof or outdoor level in colder climate locations. See Technical Bulletin # C-3 regarding accelerated corrosion in drained pipe.

CorrView ® is also ideal for monitoring closed bypass loops, standby or alternate service equipment such as free cooling heat exchangers or emergency generators, dead end pipe, dead legs or mud legs, future tie-in locations, and other flow isolated areas.

CorrView ® can be installed at horizontal lines at its lowest floors in order to monitor the higher corrosion rates well documented to exist at such areas. This is most critical at the bottom of such horizontal lines due to deposits which accumulate. Read more about its special applications.

In short, CorrView ® offers a totally new corrosion monitoring method ideally suited to the most threatened areas of any piping system. See Technical Bulletin # C-10 regarding some common corrosion trends.



CorrView ® offers substantial benefits at very low cost.

Priced at less than a single set of corrosion coupons, CorrView ® is cost effective to add to multiple areas within any building or plant property - monitoring piping systems and locations never before even considered possible. Fire sprinkler, domestic water, and many secondary piping systems, often never addressed by any form of corrosion testing, are now possible to easily monitor using CorrView ®.

CorrView ® may provide 20 or more years of monitoring service depending upon piping system involved - whereas corrosion coupons are typically removed, tested and replaced every 1-4 months.

There are no additional testing or lab analysis costs involved with CorrView ® since it is an independent and self-contained monitoring device.



  CorrView ® requires no follow-up testing, calibration, inspection, battery replacement, charging, lab analysis, cleaning, periodic removal, or maintenance of any kind.

Once installed, it remains in place until a color change is found signaling that a certain loss of metal has taken place. Under low corrosion rate conditions, it may remain in service for decades.

Once such an indication has taken place, however, the unit has fulfilled its purpose and a new CorrView ® device must be installed if corrosion monitoring is to continue.



Building properties change ownership often in today's fast moving real estate market. Plant operators and engineers also move about frequently. Over the course of time there may be a dozen or more different water treatment contractors responsible for providing chemical protection to the piping systems - and more than likely, the level of corrosion protection will have varied greatly.

This usually means that the current owner and operator of a facility or process plant has no real understanding of what degree of corrosion has taken place before him, or to what left over problems he may face. Plant maintenance records are not likely to include any more than basic chemical levels and prior corrosion coupon rates, if they exist at all.

Long term monitoring using CorrView ® therefore extends an understanding and assessment of corrosion past changes in owners or operators. While perhaps not signaling a corrosion problem or reaching its predefined wall loss limit for a current property owner, CorrView ® becomes an extremely valuable tool to future owners and plant operators looking to establish system status and a prior corrosion history.

CorrView ® is especially valuable when installed in new construction projects since it then begins its monitoring service from the very first day - taking into account the effects of chemical cleanout and start-up, and the various problems often associated with new construction work. Through over 20 years of experience in this field, CVI has identified building start-up as the most important initiating cause of severe corrosion problems.



CorrView ® offers building owners and plant operators one more tool to safeguard their critical piping systems - and thereby provide long term, trouble free services. By providing a second and more realistic view of actual corrosion activity, it will prompt the need to further investigate a suspected corrosion problem.

In effect, CorrView ® serves as the liquid equivalent of an electrical fuse or circuit breaker - remaining in place until an predetermined limit has been exceeded - at which time it signals an alarm.

For water treatment contractors, CorrView ® may help impress upon a client the need for a more comprehensive chemical program, supplemental filtration, stricter attention to maintenance, or better chemical feed and control equipment.

In reality, most building properties simply will not expend the resources necessary to deal with only a potential problem. This is especially true where corrosion coupons may be falsely returning a very favorable corrosion rate estimate.



The primary concern in the design of CorrView ® has been its reliability and system safety. In effect, CorrView ® operates on the principle of a "controlled failure." That is, its pre-determined metal surface wears away to produce advance notification of a corrosion problem prior to that corrosion problem threatening the entire piping system.

With CorrView ®, however, that failure is anticipated, and is safely contained to prevent any risk to the operation of the piping system, tank, vessel, or to the operators themselves.

Since CorrView ® is CNC machined from bar stock of solid steel, there is only one possible means for the system liquid to escape once the wearable surface has failed - and that is through its sight glass. Side wall areas of the entire CorrView ® device are of substantially greater thickness than the wearable surface of 0.050 in. or 0.100 in.

The sight glass, another critical component, is specially fused quartz glass to steel having a pressure rating well exceeding 2,000 PSI - sufficient to eliminate any threat at the much lower pressures at most office building and process plant operations.

Each sight glass assembly is permanently sealed at the threads to the main body of the device using a threadlocking anerobic compound - with even further protection provided by a supplemental O-ring seal.

This patented design guarantees that the interior chamber of CorrView ® remains dry and free from any possible false wall loss indication, while at the same time ensuring that any liquid entering the chamber is contained with the same level of safety as a conventional pipe plug.



The manipulation of corrosion coupons to produce either favorable or unfavorable results is a not so uncommon occurrence. This may include extending or shortening its exposure time and reporting it differently in order to raise or lower the corrosion rate estimate.

A building owner or plant operator aware of a deficiency in his attention to the chemical water treatment might have the interest to produce more favorable test results. In isolated cases, we have even seen coupon analysis reports which have been falsified with lower corrosion rate statistics, and found coupons coated with clear protective lacquer.

Even though corrosion coupons naturally produce much lower than actual corrosion rate estimates, sufficient arguments always exist to explain away any unfavorable test result.

CorrView ® allows a building owner or plant operator the freedom to perform their own independent and confidential corrosion monitoring, or extend the level of testing past that recommended by their water treatment contractor. There is no need to deal through any outside source to gain reliable corrosion rate information using CorrView ®.



CorrView ® is manufactured from the most commonly used steel alloy for condenser water and other HVAC piping systems - the solid bar equivalent to ASME A 53. It is offered having specific wear dimensions of 0.050 in. and 0.100 in., and can be custom machined with any wear dimension at customer request. It is available in U.S. standard sizes of 1-1/2 in. NPT and 3/4 in. NPT, as well as their equivalents in British Pipe Thread and metric.

At special order, CorrView ® can be manufactured from any other metal for which bar stock material is available. We will work to accommodate any special requirements.



  CorrView ® is a relatively new product to the corrosion market. Variations suitable for use at oil and gas pipe lines and tanks, or for other applications not containing water, will soon be available. A high temperature model for use at steam and condensate lines is also planned.

While CorrView ® is based around simplicity itself, an electric model providing an indication to a monitoring board or building maintenance system, rather than a visual color change, will also be soon available.

All such products will be available in different size standard hex shaped pipe plug form. They will also be available in an insertable model which can be installed into pressurized systems through a corporation stop valve.


     Overall, CorrView ® offers a wide range of benefits and advantages to the building owner or plant operator who is aware of the inherent limitations of corrosion coupons and other testing methods, and who is interested in monitoring for corrosion activity under real world conditions.

     CorrView ® also provides a new tool to water treatment suppliers, who all too often fail to recognize a corrosion problem due to the generally more favorable results of corrosion coupons, or due to inadequate monitoring - and then inevitably lose their customer once the problem is finally discovered.


     While it does solve many of the limitations associated with other corrosion monitoring methods, CorrView ® is not the answer to all corrosion monitoring concerns. A reliable corrosion monitoring program involves a combination of different test procedures in order to provide the most accurate and earliest possible warning of a problem condition. Read about CorrView's ® limitations of use.