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At the Millennium Hotel London Mayfair, urgent measures were needed to address corrosion due to red rust in the air conditioning hot water piping. The chosen solution was the 'NMR Pipe Protector,' which can be implemented at less than one-tenth the cost and has a minimal environmental impact while preventing red rust early on. Before installation, the iron concentration in the circulating water of the air conditioning hot water piping showed significant deterioration due to red rust, with a very high value of 15.70 mg/l due to leaching of red rust. A re-inspection six weeks after installation revealed that the iron concentration had decreased to 0.16 mg/l, demonstrating that the amount of iron leached into the water had reduced to about one-hundredth of the previous level, confirming the effectiveness of red rust prevention. Thus, the water quality of the circulating water in the air conditioning hot water piping was restored to a completely acceptable level. One of the major reasons for choosing the NMR Pipe Protector is that it is a very eco-friendly red rust prevention device. It can rehabilitate old piping that has been in use for a long time, extending the lifespan of the building. Replacing the piping would result in significant CO2 emissions due to the disposal of the old pipes, so the NMR Pipe Protector, which allows for continued use of the old piping, has a very low environmental impact. *For more details, please refer to the PDF document or feel free to contact us.*

The NMR Pipe Protector is adopted not only in Japan but also in various important facilities around the world. At the Mandarin Oriental Hyde Park in London, galvanized steel pipes (SGP) were used for the hot water supply. Galvanized steel pipes have a short lifespan of about 10 to 20 years, and red rust was occurring within the hotel's hot water supply pipes, resulting in poor water hygiene. While the standard value for iron content in water based on the UK's water quality regulations is 0.2 mg/l, the iron content in the hotel's hot water supply pipes was 13.35 mg/l. This value significantly exceeds the standard, highlighting the seriousness of the situation. With the NMR Pipe Protector, the iron content in the hot water supply pipes was reduced to below 0.2 mg/l. The NMR Pipe Protector utilizes free electrons in water, known as hydration electrons, to reduce the red rust that forms inside the pipes to black rust. This rust prevention technology, which Japan takes pride in, is also featured as one of the top 10 rust prevention technologies in the U.S. manufacturing technology magazine "Manufacturing Technology Insights" (March 12, 2020). *For more details, please refer to the PDF document or feel free to contact us.

The Royal Garden Hotel London is beloved by travelers from around the world as one of the world's leading five-star hotels. Constructed in 1965, by 2007, it had been 42 years since its establishment, and the deterioration of the hot water supply pipes had progressed. Due to the use of iron pipes, internal red rust corrosion had advanced, resulting in relatively dark red water coming out of the taps every morning. In response, three "NMR Pipe Protectors" were installed on the main hot water supply pipe in the boiler room. Furthermore, water quality tests were conducted before installation, two weeks after installation, and then monthly for 12 months to measure the iron content in the water due to red rust. The results showed a significant decrease in the iron content in the water immediately after installation. Since the effectiveness of rust prevention was quantitatively proven, the hotel also installed NMR Pipe Protectors in the air conditioning piping. Ultimately, while the cost of pipe replacement was approximately 1.5 billion yen, the total cost of the NMR Pipe Protectors was about 30 million yen, resulting in a cost that was 1/50 of the replacement cost. In terms of cost-effectiveness, it far exceeded the hotel's expectations. *Customer testimonials (customer recommendation letters) and other PDF materials are currently available for free! *Please feel free to contact us first.

The Bournemouth Highcliff Marriott Hotel, part of the world's largest five-star hotel chain, the Marriott Group, was built in 1878 and has 160 rooms. Due to the use of galvanized steel pipes for the hot water and water supply plumbing in the Marriott Hotel, very high iron levels were detected: 6 mg/l from the hot water plumbing and 3.46 mg/l from the water supply plumbing before the installation of the NMR pipe protector. The deterioration of red rust in the pipes was serious, including the presence of red water, raising concerns about future leaks. To eliminate the red water from the water supply and hot water plumbing, prevent red rust deterioration, and extend the life of the pipes, NMR pipe protectors were installed in both the water supply and hot water plumbing. Thirteen days after installation, the hot water and water supply (nighttime stagnant water) samples taken first thing in the morning were both clear, and the iron levels in the water had dropped to 0.007 mg/l, completely eliminating the red water. The reduction in iron levels prevented the formation of new red rust, and it was proven that the existing red rust in the pipes had transformed into a non-soluble volume of 1/10 of inert black rust. As a result, the formation of new red rust in the pipes was prevented, and the transformation of existing red rust into black rust demonstrated the effectiveness of the NMR pipe protector in preventing red rust and extending the life of the plumbing.

At the Legend Hotel Saigon (now Lotte Hotel Saigon) in Vietnam, severe red water emerged from the water supply pipes just six years after its construction. Despite running the water for an extended period, there was no sign of improvement, leaving guests unable to even take showers. The water in Vietnam contains a high level of sulfate components, which reacts with galvanized steel pipes (SGP), making it very prone to red rust formation. In response, in 2008, a red rust prevention device called the "NMR Pipe Protector" was installed in the water supply piping. Before the installation, red water was coming from all the water taps in the hotel. However, about a month and a half later, after conducting water quality checks in the sinks, baths, and toilets of ten guest rooms on the 14th to 17th floors, it was found that the water supply in almost all rooms had become clear, confirming the effectiveness of the red rust prevention. The corrosion of red rust in the water supply pipes was halted, and it was successfully transformed into black rust. This demonstrated that even in water with a high sulfate content that easily corrodes water supply pipes, the conversion of red rust to black rust could be achieved, exhibiting a high level of rust prevention effectiveness. *For more details, please refer to the PDF document or feel free to contact us.*

"Red Rust Deterioration of Air Conditioning Chilled and Hot Water Piping" Air conditioning chilled and hot water piping that has been in use for over 25 years experiences the loss of the zinc coating on the inner surface of the steel pipes within 4 to 5 years. As the surface of the iron comes into contact with water, red rust deterioration occurs, leading to red rust blockage. At the same time, this red rust flows into copper fan coils, causing further blockage and reducing the efficiency of heating and cooling. Additionally, the accumulation of red rust within the heat source equipment shortens its lifespan. As the red rust deterioration progresses within the piping, the threads at the joints may break off, leading to water leaks during strong earthquakes. Since the air conditioning chilled and hot water system is centralized, updating the piping requires hotels and inns to suspend operations for more than six months, and the cost of piping replacement can be several hundred million to over a billion yen. The damages incurred from the suspension of operations are also significant, leading to a demand for the development of technologies that can extend the life of air conditioning piping without replacement.

Today, as the entire society is changing due to the novel coronavirus, one of the most affected industries is the hotel industry. With a decrease in guests, a lack of banquet orders, and restrictions on dining in restaurants, income has drastically fallen. When water leakage issues arise due to rust in the plumbing from the aging of the building, the cost of necessary plumbing updates for repairs becomes very high, forcing hotels to consider borrowing from banks or selling the property. The NMR Pipe Protector, a plumbing longevity device, can reduce that cost to less than one-tenth. Even if sold, the amount will be deducted by the plumbing update costs that will arise in the near future. Hotels that are over 30 years old cannot avoid this issue sooner or later. The only solution to this problem is to compress plumbing update costs to one-tenth to one-fifteenth, extend the plumbing lifespan by over 40 years, and eliminate the need for long-term closures (which require at least six months for air conditioning plumbing updates) through the introduction of the NMR Pipe Protector. By using the world's only rust prevention device, the "NMR Pipe Protector," which converts internal red rust to black rust, improves plumbing strength, and extends plumbing lifespan by over 40 years, plumbing update costs can be reduced by more than 90%.

At a certain hotel, #HO, significant red rust corrosion had progressed in the vinyl-lined steel water supply pipes after 25 years of construction, raising concerns about leaks from the joints. Therefore, a rust prevention and pipe longevity device called the "NMR Pipe Protector" was installed. Before the installation of the NMR Pipe Protector, a white filter was attached to the water supply faucet, and after running water for five days, the filter turned brown due to the red rust generated inside the water supply pipes, revealing that the iron content captured was 11 mg/l, indicating that the red rust corrosion in the pipes was quite advanced. One month after the installation of the NMR Pipe Protector, a white filter was attached at the same location and under the same conditions as before installation, and the captured iron content significantly decreased to 1.3 mg/l. This proved that the red rust inside the pipes had transformed into black rust, which does not dissolve in water. If the NMR Pipe Protector continues to be used, it has been verified that all red rust in the pipes will change to black rust, and the cost will be less than one-fifth of the pipe replacement work, allowing the pipes to be extended for the lifespan of the building. Naturally, leaks will also be completely prevented.

At a certain hotel, #IP, the hot water supply piping made of heat-resistant vinyl-lined steel pipes had significant red rust corrosion after 31 years of construction, raising concerns about leaks from the joints. Therefore, a red rust prevention and piping extension device called "NMR Pipe Protector" was installed. Before the installation of the NMR Pipe Protector, a white filter was attached to the hot water faucet, and after running water for six days, the filter turned brown due to red rust generated in the hot water piping, revealing that the captured iron content was 150 mg/l, indicating that red rust corrosion in the piping was quite advanced. One month after the installation of the NMR Pipe Protector, a white filter was attached at the same location and under the same conditions as before, and the captured iron content decreased to 140 mg/l. Two months after installation, the iron content due to red rust further decreased to 17 mg/l, and the red rust in the piping transformed into black rust that does not dissolve in water, demonstrating the rust prevention effect and extension of the hot water piping's lifespan. At hotel #IP, it was verified that if the use of the NMR Pipe Protector continues, all red rust in the air conditioning chilled water piping will change to black rust, and the cost will be less than one-fifth of the piping replacement work, allowing the piping to be extended until the building's lifespan. Naturally, leaks have been completely prevented thereafter.

At Hotel #RF, which was built 38 years ago, significant red rust corrosion had progressed in the vinyl-lined steel water supply pipes, leading to leaks from the joints. Therefore, the red rust prevention and pipe longevity device "NMR Pipe Protector" was installed. Before the installation of the NMR Pipe Protector, a white filter was attached to the water supply faucet, and after running water for four days, the filter turned brown due to the red rust present in the water supply pipes, revealing that the iron content captured was 40 mg/l, indicating that the red rust corrosion in the pipes was quite advanced. One month after the installation of the NMR Pipe Protector, a white filter was attached at the same location and under the same conditions as before, and the captured iron content decreased to 23 mg/l. After six months of installation, the iron content further decreased to 14 mg/l, and the red rust in the pipes transformed into black rust that does not dissolve in water, demonstrating the rust prevention effect and longevity of the hot water supply pipes. It has been verified that if Hotel #RF continues to use the NMR Pipe Protector, all the red rust in the chilled and hot water supply pipes will change to black rust, allowing for pipe longevity at less than one-fifth the cost of pipe replacement work, extending the pipes' lifespan to that of the building. Naturally, leaks have been completely prevented since then.

The Legend Hotel Saigon is a building that is 7 years old and used galvanized steel pipes (SGP) for its water supply piping. Due to the high sulfur content in the water supplied from Ho Chi Minh City, red rust corrosion in the hotel's water supply pipes progressed very quickly, resulting in red water coming from the faucets in guest rooms within 6 to 7 years after completion. There were also concerns about potential future leaks. To address the red water issue caused by red rust in the water supply pipes, a plan for pipe replacement was considered; however, it was costly and required a water outage, which would necessitate halting hotel operations. As a solution, the "NMR Pipe Protector," a device for rust prevention and extending the life of pipes that does not require a water outage, was installed by a major Japanese general contractor. Before the installation of the NMR Pipe Protector, very dark red water due to red rust was coming from the faucets, but 1.5 months after its installation, the water became almost clear, resolving complaints from the hotel. The NMR Pipe Protector has been proven to stop the progression of new red rust and convert the existing red rust in the pipes into inert black rust that does not dissolve in water.

At a certain hotel, when it was 40 years old, the deterioration of red rust in the air conditioning chilled and hot water piping made of galvanized steel pipes (SGP) was very advanced, and leaks were occurring at the joints. Therefore, a red rust prevention piping longevity device called "NMR Pipe Protector" was installed. Before the installation of the NMR Pipe Protector, the amount of black rust in the red rust within the hotel's air conditioning chilled and hot water piping was 5.7%. However, six weeks after installation, the amount of black rust increased to 70.8%, demonstrating a relative increase of 1242.1%, proving that the red rust occurring in the air conditioning chilled and hot water piping was reduced to black rust. If the use of the NMR Pipe Protector continues in the future, all red rust in the air conditioning chilled and hot water piping will be reduced to inert black rust with a volume of 1/10, and as long as external corrosion does not occur, leaks from the air conditioning chilled and hot water piping will be prevented, extending the lifespan of the building. Naturally, the replacement of the air conditioning chilled and hot water piping will no longer be necessary.

The Royal Garden Hotel London, famous as a five-star hotel in London, was built in 1965 and currently has 400 rooms. Due to the iron pipes in the hotel's hot water circulation system, red water was coming out of the taps every morning. To prevent rust and leaks in the piping and to extend its lifespan, an NMR Pipe Protector was installed. Before the installation of the NMR Pipe Protector, the iron content value due to red rust in the hot water supply during nighttime was very high at 2.79 mg/l. However, 25 days after the installation of the NMR Pipe Protector, it decreased to 0.016 mg/l, and further decreased to 0.013 mg/l 36 days after installation, falling below the water quality standard value of 0.2 mg/l set by the UK Water Supply Act. This reduction was achieved as the existing red rust in the pipes was converted into black rust, which is an insoluble form with a volume 1/10 of the original, thereby demonstrating the anti-corrosion effect and lifespan extension of the air conditioning and hot water piping.

Hotel Toyokankaku is a 42-year-old building, and due to the use of galvanized steel pipes (SGP) for the hot water supply piping, issues such as leaks occurred, leading to frequent partial updates of the piping. However, there was still a serious issue with red water in the hot water supply piping in the guest room bathrooms, so we installed the rust prevention piping longevity device "NMR Pipe Protector." Before the installation of the NMR Pipe Protector, the iron ion concentration in the circulating hot water was high at 4.3 mg/l, but four weeks after installation, the iron ion concentration in the hot water significantly decreased to 1.6 mg/l, and further decreased to 0.27 mg/l eight weeks after installation, completely eliminating the red water. From these results, it was demonstrated that the NMR Pipe Protector converted the red rust in the hot water piping to black rust, preventing the red rust from dissolving into the water and reducing the iron content in the hot water. It was proven that external corrosion was prevented, leaks were avoided by continuing to use the NMR Pipe Protector, and the hot water piping was extended to the lifespan of the building.

The Mandarin Oriental Hotel is a prestigious five-star hotel located in London. Due to the occurrence of red rust corrosion issues in the hot water supply piping (SGP) at the Mandarin Oriental Hotel and concerns about leaks, two units of the red rust prevention and leak prevention device "NMR Pipe Protector" PT-75DS were installed at the header section of the circulating hot water supply piping. Before the installation of the NMR Pipe Protector, the iron content in the water within the hot water supply piping was 13.35 mg/l, indicating significant progression of red rust corrosion. Four weeks after installation, the iron content in the hot water supply piping decreased to 0.0043 mg/l, and further, five weeks after installation, it dropped to below 0.004 mg/l. This demonstrated that the progression of red rust in the hot water supply piping was completely halted by the NMR Pipe Protector, and the existing red rust transformed into insoluble black rust with a volume reduction to one-tenth. It has been verified that if the Mandarin Oriental Hotel continues to use the NMR Pipe Protector, all red rust in the hot water supply piping will change to black rust, and the cost will be less than one-fifth of the piping replacement work, allowing the piping to be extended for the lifespan of the building. Naturally, leaks will be completely prevented thereafter.

The Millennium Hotel London Mayfair is a historic building located in the heart of London, overlooking Grosvenor Square, which was once the residence of the Duchess of Kendal in the 18th century. To address the issues of red rust and leakage in the air conditioning hot water piping, the "NMR Pipe Protector," a rust prevention and pipe longevity device that does not require pipe removal or water shutdown during installation, was installed. Before the installation of the NMR Pipe Protector, the iron content due to red rust in the air conditioning hot water piping was very high at 15.7 mg/l, indicating significant deterioration from red rust and raising concerns about leakage. To prevent this red rust and leakage, the "NMR Pipe Protector" was introduced. Six weeks after the installation of the NMR Pipe Protector, the test results for the air conditioning hot water showed a significant reduction in iron content to 0.157 mg/l, completely preventing new red rust in the air conditioning cold and hot water piping, and it was proven that the existing red rust had transformed into black rust, which is insoluble in water and has a volume one-tenth that of red rust. If the NMR Pipe Protector continues to be used, all red rust in the piping will transform into black rust, preventing external corrosion and leakage, thereby extending the lifespan of the building.

The Hilton Hotel Portsmouth, located in the city of Portsmouth, is a five-star hotel that is globally renowned as part of the Hilton Group. Constructed in 1981, it has 120 guest rooms. Due to the use of galvanized steel pipes (SGP) for the air conditioning and hot water piping, the hotel faced serious issues with red rust deterioration and leaks after 25 years. Additionally, the red rust reduced the heat exchange efficiency of the air conditioning equipment, necessitating regular pipe cleaning. However, the cleaning process caused holes in the pipes, leading to further leaks. To stop the red rust corrosion and leaks in the air conditioning piping, an NMR Pipe Protector, a red rust prevention and prolongation device, was installed on December 9, 2005.

At Hotel #M, 21 years after its construction, the galvanized steel pipes (SGP) for the air conditioning chilled and hot water system were experiencing significant red rust deterioration, with a risk of leakage at the pipe joints. Therefore, a red rust prevention pipe longevity device called the "NMR Pipe Protector" was installed. Before the installation of the NMR Pipe Protector, a sample of the circulating air conditioning chilled and hot water was taken from the hotel’s piping, revealing that the water was brown due to red rust in the pipes, with a total iron concentration of 28 mg/l, indicating severe red rust corrosion within the piping. Two weeks after the installation of the NMR Pipe Protector, a water sample taken under the same conditions showed that the water color had become slightly transparent, and the total iron concentration had significantly decreased to 4.0 mg/l. A water sample taken six weeks after installation showed that the water color had become almost transparent, with the total iron concentration further reduced to 1.6 mg/l, proving that the progression of red rust within the pipes had completely stopped, and the existing red rust had transformed into an inert black rust that does not dissolve in water, with a volume reduced to one-tenth. At Hotel #M, it has been verified that if the use of the NMR Pipe Protector continues, all red rust in the air conditioning chilled and hot water pipes will change to black rust, and the costs will be less than one-fifth of the pipe replacement work, allowing the pipes to be extended for the lifespan of the building. Naturally, leakage has been completely prevented thereafter.

At Hotel #T, when it was 29 years old, the red rust deterioration in the galvanized steel pipes (SGP) used for air conditioning chilled and hot water piping was very advanced, and leaks were occurring at the joints. Therefore, a red rust prevention piping longevity device called the "NMR Pipe Protector" was installed. Before the installation of the NMR Pipe Protector, a sample of the chilled and hot water circulating in the pipes was taken, and the color of the water was brownish due to the red rust inside the pipes, with a total iron content of 29 mg/l, indicating that the red rust corrosion in the pipes was very advanced. Two weeks after the installation of the NMR Pipe Protector, a water sample taken under the same conditions showed that the water was clear, and the total iron content had significantly decreased to 0.2 mg/l. Additionally, a water sample taken four weeks after installation under the same conditions also showed a total iron content of 0.2 mg/l, confirming that the red rust deterioration had been completely prevented, and the red rust inside the pipes had transformed into black rust, which does not dissolve in water and has a volume one-tenth that of the red rust. At Hotel #T, it has been verified that if the use of the NMR Pipe Protector continues, all red rust in the air conditioning chilled and hot water pipes will change to black rust, and the cost will be less than one-fifth of the cost of pipe replacement work, allowing the pipes to be extended for the lifespan of the building. Naturally, leaks have been completely prevented thereafter.