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  • Royal Bank of Scotland (RBS)
    Royal Bank of Scotland’s Building No.250, the 18-year old bank office located in Bishopsgate, had corrosion-relating issues in its central heating water system for a pretty long period.The bank stopped using corrosion inhibitors because they were cost-prohibitive and eco-unfriendly. Instead, the bank installed Pipetector PT-200DS on March 23, 2018, as an alternative way to protect the piping from red rust corrosion. After three weeks, Pipetector reduced the level of iron-ion to 0.41 ㎎/ℓ from 1.1 ㎎/ℓ as shown in a study conducted in the same conditions as before. It indicates Pipetector stopped the new formation of internal corrosion and reduced … Read more
  • Société Générale Bank
    Société Générale Bank is one of the main banking enterprises in Europe. Of its offices, the one at Tower Hill, London, had major issues regarding corrosion in its central heating pipework system.To protect the pipework from internal corrosion, the bank installed Pipetector PT-200DS on September 26, 2008. Iron-ion content in the hot water was reduced from 21.0 mg/ℓ to 0.36 mg/ℓ six weeks after the installation, and it has kept a low level since then.It means Pipetector terminated the new formation of corrosion inside the pipework and reduced the existing corrosion into magnetite, a substance that does not dissolve in … Read more

Commercial facilities

  • Harrods
    Located in London, Harrods is one of the most famous UK department stores, having a long history since its open in 1849. Its domestic hot water pipework was approx. 25-30 years old and was using galvanized steel for the pipeline. Harrods was experiencing clogs and water discoloration problems due to internal corrosion in its tubes supplying hot water throughout the store. To protect the pipework from internal corrosion, Harrods installed Pipetector PT-150DS on a domestic hot water pipe header, 6 inches in diameter, connected to two plate heat exchangers. Only 39 days after the installation, iron-ion content in the water … Read more


  • Mandarin Oriental Hyde Park London
    Mandarin Oriental Hyde Park London had major problems with internal corrosion in its galvanized steel domestic hot water system supplying hot water to bathrooms and kitchens throughout the hotel. To eliminate issues regarding internal corrosion, single-cell bacteria and electrolysis between steel and copper, the hotel installed two Pipetector PT-75DS on its two main domestic hot water supply pipe headers connected to main boilers. Four weeks after the installation, the level of iron-ion in water was considerably reduced to 0.0043 mg/ℓ from 13.35 mg/ℓ before the installation. It further decreased to 0.0335 mg/ℓ after eight weeks.It means Pipetector immediately terminated the … Read more
  • Millennium Hotel London Mayfair
    Millennium Hotel London Mayfair is one of the most prestigious hotels situated in Central London, once being a residence of the Duchess of Kendal during the 18th Century. To protect pipes against internal corrosion, the hotel installed one Pipetector PT-200DS on its central heating water pipework. After the installation, iron-ion content in the water dramatically decreased to 0.16 mg/ℓ from 15.7 mg/ℓ within just a month. Moreover, water discoloration once seen before the installation became also clear within a month. It means Pipetector terminated the formation of corrosion inside the pipework and reduced the existing corrosion into magnetite, which does … Read more
  • Holiday Inn London Heathrow M4 Jct.4
    Built sometime during the 1970s, Holiday Inn London Heathrow M4 Jct. 4 is a major UK hotel with 617 guest rooms. It takes only a couple of minutes by car to go to the hotel from Heathrow Airport, the largest international airport in the nation. The hotel was suffering from problems that stemmed from internal corrosion, such as many pinholes on its chilled water pipework. The pinholes and other issues caused severe damage to the hotel. To completely protect the water system from internal corrosion, the hotel installed one Pipetector PT-350DS on its main chilled water supply header on Feb. … Read more
  • Thistle Westminster Hotel
    Located in Victoria, London, Thistle Westminster Hotel is one of the deluxe modern hotels with 134 guest rooms managed by Land Securities, a leading property company in the UK. To protect the hotel’s hot water pipework, the hotel installed two Pipetector PT-75DS on its independent domestic hot water headers supplying hot water throughout the hotel. 24 days after the installation, water’s average iron content considerably decreased to 0.028 mg/ℓ from 1.463 mg/ℓ, and 0.0145 mg/ℓ after 35 days, and then to 0.01 mg/ℓ after 150 days. The iron levels are all much lower than the British standard for drinking water … Read more
  • Royal Garden Hotel London
    Royal Garden Hotel London in Kensington, England, belongs to one of the most prestigious hotel chains in the world. It was built in 1965, renovated from 1994 to 1996, and now contains 400 guest rooms. To protect the hotel’s domestic hot water pipe systems from internal corrosion, the hotel installed Pipetector PT-200DS, PT-100DS, and PT-75DS onto three independent hot water flow headers in the main building. After 25 days, iron content was drastically reduced from 2.79 mg/l to 0.016 mg/l. After 36 days, Pipetector kept iron content low at 0.013 mg/l. These results are far below the British drinking water … Read more
  • Bournemouth Highcliff Marriott Hotel
    Bournemouth Highcliff Marriott Hotel is one of the prestigious hotels in the UK constructed in 1878. The hotel, having 160 rooms, decided to adopt Pipetector on its domestic hot and cold-water pipework systems at an urgent request from Marriott International Hotel Group to protect the piping systems from internal corrosion. The hotel installed two Pipetector PT-50DS on the two-inch diameter hot water flow pipes and additionally installed one Pipetector PT-75DS on the three-inch diameter domestic cold tap pipework. Only after 13 days, the iron-ion content of the hot water considerably decreased from 6.0 mg/ℓ to less than 0.007 mg/ℓ, and … Read more
  • Hilton Hotel Portsmouth
    Hilton Hotel Portsmouth belonged to one of the most prestigious hotel chains in the world. The hotel with 120 bedrooms had major problems regarding its 25-year-old central heating and domestic hot water pipework systems becoming partially blocked with internal corrosion. The facility needed to flush out to solve the issues, such as deteriorated heat exchanger efficiency. Still, a maintenance manager was very concerned about carrying out a flush-out because it could trigger other problems within the pipes since various types of chemicals had been dosed to those pipelines. The hotel then installed two Pipetector PT-150DS on six-inch header pipes within … Read more


  • Maudsley Hospital
    With a capacity of 250 beds, Maudsley Hospital is an NHS Foundation Trust psychiatric hospital located in South London. The hospital has two independent domestic hot water systems; one with a hot water cylinder and the other with two such cylinders connected to each other via hot water pipe. To protect both pipe systems from internal corrosion and single-cell bacteria, the hospital installed one Pipetector PT-50DS on the former piping and one Pipetector PT75-DS on the latter piping on March 9th, 2007. After 15 weeks, the average iron-ion level in the hot water was considerably reduced from 13.824 mg/l to … Read more
  • Whittington Hospital (NHS Foundation Trust)
    Whittington Hospital is one of the largest hospitals in North London, built during the 1860s. The boiler plant room supplies hot water to the entire hospital complex with an iron pipeline, mostly 30 to 40 years old. This system also supplies the water to the areas of day surgery, administration and sterile services located within Block C.To protect the entire pipework from internal corrosion, the hospital installed one Pipetector PT-100DS on a four-inch diameter header pipe in the plant room. Only after 12 days, the iron-ion content in the water considerably decreased from 7.33 mg/ℓ to 0.133 mg/ℓ. After 29 … Read more
  • Addenbrooke’s Hospital
    Addenbrooke’s Hospital is one of the largest medical centers in the UK. The hospital has more than 1,000 beds and is administrated by Cambridge University Hospital. The Addenbrookes’ moved to its present location in the southern area of Cambridge in 1976. The hospital’s engineering group was troubled by issued regarding corrosion in its domestic hot water systems covering Building C and D. In 2001, the engineers had to replace the pipes with those of galvanized steel. However, iron-ions kept dissolving, and single-cell bacteria thrived in the water. There were frequent water leaks as well as discolored water coming out of … Read more
  • Robert Debré maternal and child protection center in Rueil-Malmaison, France
    Owned by the city of Rueil-Malmaison in France, Robert Debré is a medical center providing health care for mothers and children. The institution decided to introduce Pipetector for its over 20-year-old domestic hot water pipe system to protect it from internal corrosion. The hot water’s iron-ion content was 0.79 mg/ℓ, and discolored water was also coming out of taps before the installation of Pipetector. However, six weeks after the installation, the level dropped to 0.29 mg/ℓ, and it further sunk to 0.04 mg/ℓ after 12 weeks, a figure below the French standard for drinking water set at 0.2mg/ℓ. Pipetector attained … Read more

Office Buildings

  • Office Victoria
    Office Victoria is located next to the Thistle Westminster Hotel, where Pipetector is also adopted, and the office is managed by Land Securities, one of the UK’s leading property companies. To protect its hot water pipework from internal corrosion, the office installed one Pipetector PT-50DS on a 2-inch hot water cylinder connected to a galvanized steel flow pipe on January 5, 2007. After 24 days, the average iron-ion content in the water considerably dropped from 1.93 mg/ℓ to less than 0.007 mg/ℓ and was kept at 0.01 mg/ℓ after 35 days. These iron-ion contents were much lower than the British … Read more
  • Ross House
    Ross House is an office building located in Enfield, London. Established in 1970, it is owned by Data Connection Co., one of the largest IT companies in the UK. Ross House suffered from a major problem: its hot water pipework had water discoloration caused by corrosion contamination. Before the installation, hot water was sampled from a tap and showed an iron content at 2.26 mg/ℓ. To lower this level, the office on October 21, 2004, installed one Pipetetor PT-20DS on a hot water copper tank’s outlet pipe connected to a galvanized steel pipe distributing hot water throughout the office. After … Read more
  • Fenchurch Building
    The Fenchurch, an office building approximately a hundred years old, is owned by one of the largest property owners and developers in the UK, Land Securities Ple. A major refit took place at the office block thirty years ago, but the domestic hot water pipework of the Fenchurch was contaminated with corrosion. Water testing detected a high level of iron content, and discolored water was also coming from taps throughout the building. To protect the hot water pipework from internal corrosion, Fenchurch installed one Pipetector on the outlet galvanized steel pipe of a plate heat exchanger on May 19, 2004. … Read more

Public facilities

  • The British Museum
    The British Museum, located in London, is one of the famous museums in the world. The museum stores more than eight million art objects and displays around 150,000 objects at a time. The building has a history of more than 260 years, but its central heating pipework system had a sludge problem and was urgently in need to prevent water leaks damaging the art objects. The British Museum installed Pipetector PT-250DS on March 30, 2016, as the total method that does not disrupt ongoing water supply and prolongs the lifespan of pipes as long as the building’s. Iron content in … Read more
  • The Guildhall, Central London
    The Guildhall is the headquarter of the City of London Corporation municipality and is the world’s heritage site. The Guildhall has many buildings, including the Great Hall built in the 14th century, and is listed as a grade-1 site where many high-profile functions occur. The Guildhall installed one Pipetector PT-100DS on the domestic hot water pipework experiencing issues regarding water discoloration caused by internal corrosion in a complex situated at the hall’s West Wing constructed in 1974. Only 3 weeks after the installation, Pipetector reduced Fe content from 6.36 mg/L to 0.015 mg/L. This indicates that Pipetector terminated the new … Read more
  • Palace of Westminster
    The Palace of Westminster is one of the most famous buildings in the world. It is located on the North bank of River Thames and was built in the 1860s approximately. One of the buildings had a major problem of internal corrosion in its central heating system.So, to protect all the central heating systems completely, the Parliament installed one Pipetector PT-75DS installed on a central heating supply pipe on April 12, 2010. Before the installation, the Fe content in the heating water was 3.9 mg/L. However, after only four days, the Fe content decreased to 2.2 mg/L. The level decreased … Read more
  • Buckingham Palace
    Buckingham Palace was built in 1703 for the Duke of Buckingham and became the royal residence of the British monarch upon the accession of Queen Victoria in 1837. The palace has now 775 rooms and is used as an office and residence of Her Majesty the Queen.  Although some old pipes were replaced, others supplying hot water throughout the palace were kept unchanged, causing problems regarding internal corrosion. In addition, the problems also remained in a central heating system using galvanized steel as pipe material. To prevent corrosion deterioration and prolong the lifespan of the water systems, the palace installed … Read more


  • Christ’s College, Cambridge
    Christ’s College, Cambridge installed Pipetector PT-75DS on its main central heating return pipe at the Todd building on July 31, 2013, to eliminate the issues regarding corrosion and single cell bacteria as well as maintain the integrity of the entire pipework. The Fe-ion content in the heating water was 43.81mg/L before the installation. But the level was reduced to 17.95mg/L after three weeks. Reduction of the Fe-ion content proceeded slow, as the heating system was not operating in August when Pipetector was installed. After the system resumed its full operation in October, the Fe-ion content kept decreasing until it dropped … Read more
  • City, University of London
    City, University of London, 47 years old, is one of the major universities located in the north of London. The university had major issues related to internal corrosion in its central heating system resulting in a high level of iron in the water. To protect the entire pipework, the educational institute installed one Pipetector PT-200DS on the system’s main supply pipe on June 13, 2013. Before the installation of Pipetector, the iron content was 3.407 mg/L. However, it was reduced to 0.084 mg/L after two weeks which indicated a reduction of over 75%. It means Pipetector terminated the new formation … Read more


  • The Old House at Shepperton Studios
    Shepperton Studios is a venerable film studio originally built back in 1689. The Old House within the studio’s property was used as a domestic dwelling for over two hundred years before it was caught on fire in 1876. The house was then laid unoccupied for about 25 years until it was fully restored in 1902. In 1936, the studio was subject to another refurbishment providing simple lodging and dining facility for the film industry. The entire refurbishment took place in 1936 to open as hotel accommodation for film stars. The Old House had internal corrosion in its old galvanized steel … Read more
  • British Broadcasting Corporation (BBC)
    British Broadcasting Corporation, BBC, is the UK’s national broadcasting company established in 1953. BBC’s Main Block and Stage 5 buildings, where television programs are broadcast in White City, had a major problem of corrosion in their condenser water pipework systems. To protect those systems from internal corrosion, the TV station decided to adopt an anti-corrosion device Pipetector. Four Pipetector PT-250DS were installed on the condenser water pipes, 10 inches in diameter, on Apr. 20, 2006. 32 days after the installation, the iron-ion contents in the condenser water were considerably reduced to 0.048 mg/L from 5.53 mg/L as for the Main … Read more
  • A water authority in Romania
    The 20-year-old water authority in Romania was using iron pipes for its water distribution pipe. Prior to the installation of Pipetector, the authority sampled the water at four points, which were respectively 15-20, 20-30, 350-400 and 450-500 meters away from the due installation location (pipe). The levels of iron content in the samples were 0.5 mg/L, 0.5 mg/L, 2.5 mg/L and 3.0 mg/L each. The results revealed a serious development of corrosion inside the pipe. The water authority then decided to install Pipetector to stop the issue by changing the corrosion to magnetite without outflowing it. After three days, each … Read more


  • Yaesu Guchi Kaikan Hall
    The Yaesu Guchi Kaikan hall was constructed 49 years ago, using galvanized steel for its air-conditioning heating plus chilled water pipework*. The pipe was corroded with red rust inside, so the hall adopted the anti-corrosion pipe renewal device Pipetector, which cost 1/10 compared with the whole pipe replacement. *It is a type of air-conditioning system that handles both heating and chilled water in a single pipeline that switches the water, depending on season and outer temperature. It is pretty common in large facilities in Japan where building size is limited. When the building sampled the water from the pipeline and … Read more
  • A major bookstore chain headquarters in Shinjuku, Tokyo
    A major bookstore chain’s Shinjuku HQ, which was built *57 years ago, is one of the historically valuable structures designated by the Tokyo Metropolitan Government. As the building aged, the bookshop was alarmed by the deterioration of its air-conditioning heating and chilled water pipe system stretched throughout the building; the piping was damaged by internal corrosion. *As of 2021 To deal with the issue, the bookshop installed one unit of Pipetector on a 200 mm-diameter pipe connected to a heat pump in 2005, 41 years after the store’s construction. 19 months after the installation of Pipetector, the bookshop conducted a … Read more
  • DPE Factory
    Pipetector was installed on the outlet pipe of elevated tank at the photo service factory building in November 2000. It has been 35 years since this building was built, and since the water supply pipe was made of Steel Galvanized Pipe (SGP), it was suffering from red colored water. Other methods such as magnet, electric power, and ceramics can wash off corrosion developed inside pipework to worsen the water quality; it badly affects the quality of pictures which is not good for DPE business. Pipetector which reduces corrosion to magnetite without washing it off was installed. Before the installation of … Read more
  • Teikoku Gekijyou (Imperial Theatre)
    Pipetector has accomplished taking care of corrosion inside domestic tap and air-conditioning water pipes at a 55-year-old commercial building. It has one of the most renowned musical theatres across the nation: Teikoku Gekijyou (Imperial Theatre). Besides the theatre, it contains restaurants, business offices, museums and other tenants. The facility was suffering from corrosion-relating problems, such as frequent water leaks. To deal with the issues, the building installed Pipetector 34 years after the construction. After 21 years have passed since then, Pipetector still protects this venerable structure with its anti-corrosion effect. As a result, the facility has had no water leaks or … Read more
  • Japanese Red Cross Medical Center
    Since chemical inhibitors are not allowed to use to protect water pipes from being damaged by corrosion because it is no good for health. Corrosion colored water was found in many rooms, so PIPETECTOR, which does not need the construction work to stop water supplying, was installed in order to stop corrosion and prolong the water supply pipes for more than 40 years. 6 weeks after the installation of Pipetector, water examination was done on sample water which was 500ml of water taken in the morning. Fe content in water decreased from 2.0mg/l (before the installation of Pipetector) to 0.27mg/l, … Read more
  • Food Factory in Shizuoka Prefecture
     It has been 11years since the food factory was built, and High Impact Vinyl Pipes (HI-VP) have been used. The factory has used well water. Generally, well water has more bacteria than tap water, and it causes to form and grow slime easily. Pipetector was installed in order to prevent growing the bacteria in the cooling tower of the food factory. As the result, algae of the cooling tower stops growing because of the effect of Pipetector.  Before the installation of Pipetector, the number of single cell bacteria was 640, and colored from organic dirt was 8 degrees. 4 weeks … Read more
  • Nissan Motor Co., Ltd. (Kyushu Factory)
    Before the installation Inside of the cooling water pipe was seriously blockaded caused by corrosion. Therefore, the clogged cooling water pipe for the welding robot stopped the whole production line often. 9 months after the installation The corrosion was reduced to magnetiteand clogs of the cooling water pipe disappeared. So, the whole production line did not have to be stopped. Color The rust before the installation of PIPETECTOR was red color.The rust taken 9 months after the installation of PIPETECTOR became and formedmagnetite film covering the inner pipe. Analysis of Mass Magnetite According to the analysis done by Tokyo University … Read more


  • Anti-calcium scale application
    Major wire rod factory’s centrifuge in Japan
    The wire rod factory uses a centrifuge to separate oil-water emulsion, which is used in the process of manufacturing. The separated water is then discharged as wastewater.However, soon after the factory started using the centrifugal device, it caused frequent malfunctions that affected the factory’s operation. When factory engineers checked the apparatus, a hard scale was built up on the centrifuge’s turbines, which was likely the cause of the equipment failure.In general, the solubility of dissolved calcium ions drops when heat or water pressure rises in water pipes. A hard calcium carbonate scale tends to build up within such plumbing systems.The … Read more
  • Anti-calcium scale application
    Steel manufacturing factory in Japan
    Comparing calcium scale deposit before-after installation Solid scale deposit built up on the inner surface of the pump’s outer casing Scale deposit no longer be seen since it has become non-adhesive Crystal particles of calcium carbonate built up inside the casing Soft as powder, scale particles being reduced to a few millimeters in size Overview The steel factory was suffering from calcium scale built up on the outer casing of liquid ring vacuum pumps. Because of that, the pump impellers were damaged, ending up in frequent pump malfunction. The scale deposit had also disrupted the factory’s manufacturing lines for more … Read more
  • Anti-calcium scale application
    Major chemical Co. factory in Japan
    Comparing two heat exchangers Heat exchanger #1 without Non-Scalor Mass amount of calcium scale deposit rebuilt up after the factory’s regular cleaning in Aug. 2000. *The photo taken in Feb. 2001 Heat exchanger #2 with Non-Scalor Calcium scale being controlled after the factory’s regular cleaning and Non-Scalor installation in Aug. 2000. *The photo taken in Feb. 2001 Summary In general, the growth of calcium scale inside heat exchangers affects their heat exchanger efficiency and even disrupts factory operation in the worst-case scenario.To protect multi-pipe heat exchangers from calcium scale issues, Major Chemical Co. Ohita factory ran a test trial of … Read more
  • Anti-calcium scale application
    A Carillion building’s coffee/tea vending machines
    Tea & coffee vending machines conducted a six-month test trial of Non-Scalor to solve the issue of calcium scale that was clogging their water tubes.    Before the trial, the three automats newly replaced their water tubes and washed inside the water tanks connected to the tubes. Then, they installed Non-Scalor on two of the machines to compare the device’s effectiveness against calcium scale in the tubes with and without the scale preventer.  As a result, the ones with Non-Scalor had no calcium scale being built up inside their tubes. On the other hand, calcium scale clogged up more than … Read more
  • Non-Scalor application for glass wall in a private house
    Before installation Before the installation of Non-Scalor, the glass wall in the shower room had lime scale adhesion. After installation After the installation of Non-Scalor, the glass wall in the shower room had no lime scale to be found. The effect of Non-Scalor can prevent calcium scale problems, such as clouding of glasses at hotels and restaurants. Related links

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