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A Guide to Thermostatic Mixer Valve (TMV) Servicing in the Hospitality and Entertainment Industry

Introduction to TMVs

Thermostatic mixer valves (TMVs) are essential devices used across various hospitality and entertainment venues to precisely control water temperature. They blend hot and cold water to achieve a safe temperature range between 38°C and 46°C, crucial in preventing scalding, especially for vulnerable groups like young children or the elderly. TMVs ensure consistent water temperature delivery, thereby significantly reducing the risk of scalding incidents.

Impact on Legionella Control

Beyond preventing scalding, TMVs play a significant role in Legionella control within water systems. Legionella bacteria thrive in tepid water environments, making temperature management vital for prevention. While the ideal temperature for Legionella control is above 60°C, such high temperatures can cause scalding. TMVs provide a solution by blending water to a safe temperature. However, improper management can inadvertently create conditions conducive to Legionella growth. Thus, meticulous installation and maintenance of TMVs are crucial to managing both scalding and Legionella risks effectively.

Key Considerations for TMV Installation

  • When installing TMVs in hospitality and entertainment settings, several factors must be considered:
  • Integration with Tap Fittings: TMVs should ideally be integrated into tap fittings to ensure water is mixed at the outlet, minimizing the risk of Legionella growth.
  • Flow Rate Considerations: Installing TMVs on low flow spray taps can increase the risk of Legionella proliferation.
  • Proximity to Outlets: TMVs should be installed as close as possible (within 2 meters) to the outlet to reduce the volume of stagnant water in pipework, lowering the risk of Legionella contamination.
  • Single Outlet Usage: TMVs feeding multiple outlets, such as showers or washbasins, can elevate Legionella risk and should be avoided.
  • Flushing Protocols: TMVs may render cold taps underused, necessitating weekly flushing to prevent water stagnation and Legionella growth.

Where TMVs Should Be Installed

TMVs are particularly essential in areas with a high risk of scalding, such as baths, showers, and settings catering to vulnerable individuals like the young or elderly. Additionally, they are necessary in washbasins and sinks where a significant scalding risk is identified, such as in properties accommodating individuals with physical or mental disabilities. In healthcare facilities, including hospitals and healthcare centers, TMVs are mandatory to ensure patient safety.

Servicing Requirements

Regular servicing of TMVs is essential to maintain their effectiveness in preventing scalding incidents and controlling Legionella. Typically, TMVs should be checked annually, or as per the frequency determined by the risk assessment. However, in healthcare settings, more stringent regulations may apply, necessitating bi-annual checks to uphold the highest standards of water safety.

Differentiating Type 2 and Type 3 

Understanding the distinction between Type 2 and Type 3 TMVs is crucial:

  • Type 2: These can be adjusted by users and are suitable for domestic use or housing associations catering to able-bodied individuals. They comply with standards such as BS EN 1111 and/or BS EN 1287.
  • Type 3: These are fail-safe valves with preset temperatures and cannot be adjusted by users. They adhere to stringent healthcare standards, such as those outlined in the NHS Estates Model Engineering Specification for healthcare premises.

TMVs are indispensable devices in the hospitality and entertainment industry for maintaining water safety, preventing scalding incidents, and controlling Legionella growth. By adhering to proper installation, maintenance, and servicing protocols, these establishments can ensure the consistent delivery of water at safe temperatures, safeguarding the well-being of their guests and patrons.

Contact Us Today!

Do you have any questions or need a quotation? Don’t hesitate to reach out to our friendly sales team today. Give us a call at 01454 417 920 or email us at sales@dantek.co.uk. You can also visit our website at http://www.dantek.co.uk for further details.

Water Softeners: Annual Maintenance and Disinfection of Base Exchange

Water softeners play a crucial role in maintaining the integrity of hot and cold-water systems, ensuring both efficiency and safety. The HSG 274 guidance document for the control of legionella bacteria emphasizes the significance of regular maintenance and disinfection of base exchange water softeners. In this blog, we delve into the importance of annual servicing, the comprehensive checks conducted, and how these actions contribute to efficient and reliable operation.

Water softener

Why Annual Maintenance Matters

The HSG 274 guidelines provide a robust framework for mitigating the risks linked to legionella bacteria. According to these guidelines, it is recommended that base exchange water softeners receive annual servicing and disinfection. This regular maintenance not only helps in preventing the spread of legionella but also prolongs the lifespan of the softener system, guaranteeing its ongoing effectiveness, all while reducing operational costs through optimal salt and water utilization.

The Annual Softener Service: A Detailed Overview

Many companies still rely on Chlorine, which can damage the resin, reduce its capacity, and ultimately shorten its lifespan. What sets Dantek apart from competitors is our commitment to a comprehensive review of the commissioning settings, cross-referencing them with first principle calculations for factors like salt usage and resin capacity. We also quantitatively measure water hardness, ensuring that each vessel produces water with a hardness level below 5ppm, a more stringent standard compared to others who typically test down to 10 or 20ppm

  • During the annual water softeners service, our specialized water softener team conducts a meticulous inspection and maintenance process, consisting of the following key steps:
  • Resin Bed Disinfection: We disinfect the resin beds in both columns using a resin-safe disinfectant, PAA5. This critical step ensures the elimination of harmful bacteria, enhancing the safety of your water supply.
  • Visual Inspection and Leak Check: Our technicians carefully examine the system for any visible leaks from the valve head and vessels. Identifying and addressing leaks promptly not only prevents water wastage but also helps avoid potential damage
  • Salt Levels and Condition: We check the salt levels and condition to ensure proper regeneration and optimal softening efficiency.
  • Operational Function Tests: Various operational functions, including the backwash function, injector clearance, brine draw, rapid rinse cycle, and brine valve operation, undergo rigorous testing to ensure smooth operation.
  • Brine System Inspection: As part of our Dantek water softener Service, we remove, clean, and inspect components like the brine assembly, venturi valve, brine line flow control, and brine tank foot valve. This thorough inspection is vital to ensure that the softener functions correctly until the next annual service.
  • Water Softness Confirmation: We assess water hardness to verify the softener’s effectiveness in providing consistently softened water.
  • Electrical Control Systems: We review the operation of electrical control systems to ensure seamless automation and control.
  • Control Settings and Fault Identification: Control settings are meticulously recorded and adjusted if necessary. Any system faults are identified and reported to the customer, along with estimated costs for any required repairs.

At Dantek, our annual softener service goes beyond routine maintenance, providing you with the assurance that your water softening system will operate efficiently, reliably, and cost-effectively, while safeguarding the quality and safety of your water supply.

Complete Assurance and Report

During the Water softener service visit, our highly skilled technicians diligently record all relevant data and promptly report any instances of non-compliance. This meticulous documentation guarantees that your water softener system operates at peak efficiency, remains cost-effective, and prioritizes safety and reliability. With this approach, you can rest assured that your systems are shielded from the harmful impacts of hard water, ensuring their long-term performance and effectiveness.

Softener Month Special Offer:

For the entirety of June, Dantek is offering an exclusive deal on water softeners for businesses. All new water softener installations come with a 10% discount and a complimentary softener service in June 2025. Seize this opportunity to enhance your business operations and save on costs. Contact us today at 01454 417 920 or email sales@dantek.co.uk quoting “softenermonth” to take advantage of this special offer!

#WaterSoftenerMaintenance #LegionellaControl #AnnualService #BaseExchangeSofteners #WaterSystemEfficiency #HSG274Guidelines #WaterSafety #RoutineMaintenance #SoftWaterSupply #SystemReliability #DantekWaterServices #HealthierWater #WaterQualityMatters

https://dantekenvironmental.co.uk/services/plant-equipment/water-softener/

Why Water Softeners are Business Essential

Water softeners might not be the first thing that comes to mind when optimising operations, but they play a significant role in enhancing efficiency and reducing costs. Let’s look into why water softeners are key for businesses and how they can be a game-changer.

Why Water Softeners are Business Essential:

Equipment Longevity: Hard water can wreak havoc on industrial machinery, causing scale buildup and corrosion. Water softeners prevent this by removing minerals that cause these issues, extending the lifespan of expensive equipment and reducing maintenance costs.

Energy Efficiency: Scale buildup in heating systems reduces efficiency and increases energy consumption. By installing water softeners, businesses can significantly cut down on energy costs and contribute to a greener environment.

Improved Cleaning: Whether it’s in hospitality, food service, or manufacturing, clean environments are crucial. Softened water enhances the effectiveness of cleaning agents, leading to better results and reduced usage, ultimately saving businesses time and money.

Product Quality: In industries where water is a critical component of products, such as food and beverage manufacturing, water quality directly impacts product quality. Water softeners ensure consistent water quality, safeguarding product integrity and customer satisfaction.

Softener Month Special Offer:

For the entirety of June, Dantek is offering an exclusive deal on water softeners for businesses. All new water softener installations come with a 10% discount and a complimentary softener service in June 2025. Seize this opportunity to enhance your business operations and save on costs. Contact us today at 01454 417 920 or email sales@dantek.co.uk quoting “softenermonth” to take advantage of this special offer.

Why Choose Dantek?

Expertise: With decades of experience in the industry, Dantek has the knowledge and expertise to provide tailored solutions to meet your business’s unique needs.

Quality Products: We offer high-quality water softeners from leading manufacturers, ensuring reliability, efficiency, and long-term performance.

Customisation: Every business is unique, and we understand that. Dantek offers customized solutions designed to address your specific challenges and objectives.

Exceptional Service: Our dedicated team is committed to providing exceptional customer service, from initial consultation to installation and ongoing support.

Value: We offer competitive pricing and cost-effective solutions, ensuring that you get the best value for your investment.

Take advantage of our exclusive June offer and transform your business operations with Dantek’s high-quality water softeners. Contact us today at 01454 417 920 or email sales@dantek.co.uk quoting “softenermonth” to secure your discount and complimentary service.

https://dantekenvironmental.co.uk/services/plant-equipment/

 

Choose Dantek for Water Hygiene Services this festive season!

We hope that you have enjoyed the informative blogs we’ve been sharing for the retail industry since October. From L8 Lite assessments to water hygiene monitoring and microbial sampling, our aim has been to provide valuable insights and guidance to help businesses thrive in the ever-evolving retail Christmas wonderland.

Dantek: Your Water Hygiene Partner

Dantek is not your run-of-the-mill water treatment company. With an unwavering commitment to water hygiene and treatment services across the UK, we are the reliable partner you need to maintain the highest standards for water safety. Our mission is clear: to help businesses comply with ACOP L8 and HSG274 regulations while efficiently managing water systems in a safe, cost-effective manner.

Why Choose Dantek for Retail Water Hygiene Services?

In an industry where simplicity, compliance, and expertise matter the most, Dantek offers a winning combination that sets us apart:

  1. Transparent Pricing: Our pricing structure is straightforward, ensuring you receive detailed quotes in record time, enabling quick and informed decisions.
  2. Legionella Control Association (LCA) Membership: Dantek has proudly been a member of the LCA since 2007. This affiliation guarantees that our clients are aligned with the latest HSE guidelines and industry best practices.
  3. Customer-Centric Approach: We’re not just service providers; we’re your partners in water safety. By actively listening to your concerns and needs, we leverage our extensive experience to offer tailored solutions for the common water-related challenges faced in buildings.
  4. Efficient Scheduling: Our dedicated office team collaborates with clients to ensure service appointments are scheduled with minimal disruption to your operations and end users.
  5. ISO9001 BSI Accreditation: Our commitment to quality is unwavering. Dantek proudly holds an ISO9001 BSI accreditation, reinforcing our dedication to maintaining the highest industry standards.
  6. Expert Technicians: Our field-based technicians undergo a rigorous 11-part training program, developed in-house over the last 20 years, ensuring that the professionals handling your water systems are highly skilled and knowledgeable.
  7. Elegant Electronic Logbook: Managing multiple-site contracts can be complex. That’s why we’ve developed a user-friendly, web-based electronic logbook that offers real-time reports of non-compliance, enhancing our ability to efficiently manage large multi-site contracts while ensuring affordability.

Dantek Services for Retail

At Dantek, we specialize in providing water hygiene services with a focus on Legionella control. Our comprehensive range of retail services includes:

  1. Tailored Legionella Risk Assessments: Our wealth of experience makes us experts in multi-site Legionella risk assessments. We provide detailed asset registers, AutoCAD drawings, system condition evaluations, and actionable recommendations for compliance. Don’t forget we also offer an L8 lite version which is specifically designed for sites without significant plant items like calorifiers and tanks, which are commonly found in larger establishments. This streamlined assessment is particularly valuable for retailers with mains-fed systems.
  2. Water Hygiene Monitoring: Our highly trained technicians conduct regular temperature checks, tank inspections, and more, ensuring that your systems adhere to the highest standards.
  3. Microbiological Monitoring: We offer UKAS-accredited laboratory testing for biological monitoring programs, including Legionella testing and potable water testing. Our experts interpret results and provide actionable insights.
  4. Cleaning and Disinfection: Complying with HSE guidelines, our complete cleaning and disinfection packages guarantee your systems are clean and safe. We utilize site-specific methods, dedicated professionals, and state-of-the-art resources.
  5. Showerhead Cleaning and Disinfection: Our experienced team provides efficient and thorough cleaning and descaling services for showerheads.

Additional services include chlorine dioxide maintenance, softener servicing, calorifier inspections, closed-system water treatment, and much more.

In the dynamic world of retail, where every customer interaction matters, Dantek offers a crucial layer of support through its expert water hygiene and treatment services. Our commitment to compliance, customer satisfaction, and innovative technology positions us as a valuable partner in creating a safer working environment.

This Christmas season, let Dantek be your contractor in ensuring that every aspect of your retail business, including water hygiene, is in top-notch condition. With a dedicated team, a track record of excellence, and a user-friendly electronic logbook, we’re transforming how the retail industry manages water systems.
Learn more about our services and how we can help your business thrive by visiting our website at www.dantek.co.uk, sending us an email at sales@dantek.co.uk, or giving us a call at 01454 417 920.
Wishing you a Merry Christmas and a prosperous New Year filled with joy and success!

Chlorine Dioxide Unit Rental and Flexible Agreements for Effective Water Treatment

Here at Dantek, we manage a collection of Chlorine Dioxide Rental units, which include both Tristel TTec2000 and Grundfos Oxiperm Pro Units. These units are adaptable, with the option for wall or floor mounting, and they can be customized to either dose directly into flowing pipework (whether mains or other) or into a water storage vessel. Additionally, these units possess the capability to dose proportionally based on a pulse-sending water meter or under the control of a Chlorine Dioxide measuring cell.

The limitation of Chlorine Dioxide dosing shares a similarity with temperature in that it relies on water turnover for effectiveness—it can only eliminate the contaminants it meets. Consequently, a Chlorine Dioxide unit cannot directly replace flushing in unoccupied or partially occupied buildings. However, Chlorine Dioxide proves to be a more potent control method compared to temperature alone, especially in addressing biofilm and tackling fouled systems.

Opting for a Chlorine Dioxide unit rental is not cost-effective when the need extends beyond a year; in such cases, purchasing a unit is a more economical choice. The installation costs for rented units can vary and, in certain situations, match those of a permanent installation. This is due to potential expenses related to pipework modifications, the installation of water meters, and the provision of electrical supplies.

Our rental agreements are adaptable in terms of both duration and coverage. Typically, the minimum hire period is one month. We provide a comprehensive service that encompasses installation, commissioning, supply of chemicals, continuous maintenance, de-commissioning, and removal. On the flip side, we also offer ‘dry hire’ options for proficient operators of water treatment equipment.

Our rental units have demonstrated success in various scenarios, including:

  • Before occupation in new buildings, especially in partially occupied ones.
  • Prior to demolition or extensive remodeling in older properties.
  • As a temporary control measure while awaiting other works, such as the installation of new calorifiers or boilers.
  • In situations where speed is crucial, and/or the delivery times for purchased units are extended.
  • As a proof of concept before committing to capital expenditures.

 

Contact us now to discuss your requirements and receive a personalised quote. Call us at 01454 417 920 or drop us an email at sales@dantek.co.uk

Calorifier Inspection: Your Key to Compliance and Safety

Is your business taking the necessary steps to ensure the safety of its water systems and comply with regulations? If not, it’s time to consider Dantek’s complete calorifier inspection services. We understand the importance of maintaining a clean and safe water supply, and our expert team is here to help you achieve just that.

The Importance of Calorifier Inspections

Calorifiers play a crucial role in providing hot water for various commercial applications. However, over time, these systems can become breeding grounds for harmful bacteria, including Legionella. To combat this risk and maintain a healthy environment, regular inspections and cleaning are essential.

According to HSG274 Table 2.1, annual internal inspections of calorifiers are necessary, involving the removal of inspection hatches or the use of a boroscope. Cleaning is performed by draining the vessel, and the inspection frequency can be adjusted based on findings. In some cases, acid descaling may also be required to address the buildup of calcium scale. Dantek ensures a thorough inspection process, meticulously checking for debris, temperature, and clarity while adhering to industry guidelines.

Compliance with Regulations

By choosing Dantek for your calorifier inspections, you’re not only ensuring the safety of your staff and customers but also complying with key regulations. The Health and Safety at Work Act 1974 (HASAWA), COSHH regulations, and the Management of Health and Safety Regulations emphasize the importance of effective Legionella management. Our services align with the guidance provided by the Health and Safety Executive, ACoP L8, and HSg274, ensuring that your systems remain clean and free from debris.

What We Offer

When you opt for Dantek’s calorifier inspection services, you receive a comprehensive package designed to cover all your needs. Our service includes:

  • Full Drain Down: We start by thoroughly draining each system, preparing it for inspection and cleaning.
  • Visual Inspection: Our experts meticulously examine the internal components of the calorifier, identifying any potential issues.
  • Thorough Cleaning: We clean the vessel, removing any debris and ensuring optimal performance.
  • Disinfection: To eliminate bacteria and ensure a hygienic system, we conduct a thorough spray disinfection.
  • Re-Sealing: After inspection and cleaning, we re-seal the calorifier to ensure its watertight integrity, including replacing seals and gaskets as needed.
  • Real-Time Monitoring: Our electronic system allows you to access real-time updates on completed works and recommendations.
  • Certification: You’ll receive a certification confirming that the inspection and cleaning have been successfully carried out.

Partner with Dantek for Peace of Mind

At Dantek, we take pride in offering comprehensive and reliable calorifier inspection services. Our experienced team follows meticulous procedures to ensure your systems are safe, compliant, and ready to deliver clean hot water.

Note: All our services are performed in accordance with our current method statements, specifically designed to ensure compliance and safety.

Ready to ensure the safety and compliance of your business’s water systems? Get in touch with us today to schedule your comprehensive calorifier inspection. Our expert team is here to assist you every step of the way.

Contact Information:

Phone: 01454 417 920

Email:sales@dantek.co.uk

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Annual Maintenance and Disinfection of Base Exchange Water Softeners: Ensuring Legionella Control and Efficient Operation

Base exchange water softeners: Water softeners play a crucial role in maintaining the integrity of hot and cold-water systems, ensuring both efficiency and safety. The HSG 274 guidance document for the control of legionella bacteria emphasizes the significance of regular maintenance and disinfection of Base exchange water softeners. In this blog, we delve into the importance of annual servicing, the comprehensive checks conducted, and how these actions contribute to efficient and reliable operation.

Why Annual Maintenance Matters – Base exchange water softeners

The HSG 274 guidelines provide a robust framework for mitigating the risks linked to legionella bacteria. According to these guidelines, it is recommended that Base exchange water softeners receive annual servicing and disinfection. This regular maintenance not only helps in preventing the spread of legionella but also prolongs the lifespan of the softener system, guaranteeing its ongoing effectiveness, all while reducing operational costs through optimal salt and water utilization.

The Annual Service for Base Exchange Water Softeners: A Detailed Overview

Many companies still rely on Chlorine, which can damage the resin, reduce its capacity, and ultimately shorten its lifespan. What sets Dantek apart from competitors is our commitment to a comprehensive review of the commissioning settings, cross-referencing them with first principle calculations for factors like salt usage and resin capacity. We also quantitatively measure water hardness, ensuring that each vessel produces water with a hardness level below 5ppm, a more stringent standard compared to others who typically test down to 10 or 20ppm

  • During the annual softener service, our specialized water softener team conducts a meticulous inspection and maintenance process, consisting of the following key steps:
  • Resin Bed Disinfection: We disinfect the resin beds in both columns using a resin-safe disinfectant, PAA5. This critical step ensures the elimination of harmful bacteria, enhancing the safety of your water supply.
  • Visual Inspection and Leak Check: Our technicians carefully examine the system for any visible leaks from the valve head and vessels. Identifying and addressing leaks promptly not only prevents water wastage but also helps avoid potential damage
  • Salt Levels and Condition: We check the salt levels and condition to ensure proper regeneration and optimal softening efficiency.
  • Operational Function Tests: Various operational functions, including the backwash function, injector clearance, brine draw, rapid rinse cycle, and brine valve operation, undergo rigorous testing to ensure smooth operation.
  • Brine System Inspection: As part of our Dantek Service, we remove, clean, and inspect components like the brine assembly, venturi valve, brine line flow control, and brine tank foot valve. This thorough inspection is vital to ensure that the softener functions correctly until the next annual service.
  • Base exchange water softeners Confirmation: We assess water hardness to verify the softener’s effectiveness in providing consistently softened water.
  • Electrical Control Systems: We review the operation of electrical control systems to ensure seamless automation and control.
  • Control Settings and Fault Identification: Control settings are meticulously recorded and adjusted if necessary. Any system faults are identified and reported to the customer, along with estimated costs for any required repairs.

At Dantek, our annual softener service goes beyond routine maintenance, providing you with the assurance that your water softening system will operate efficiently, reliably, and cost-effectively, while safeguarding the quality and safety of your water supply.

Complete Assurance and Report

During the service visit, our highly skilled technicians diligently record all relevant data and promptly report any instances of non-compliance. This meticulous documentation guarantees that your water softener system operates at peak efficiency, remains cost-effective, and prioritizes safety and reliability. With this approach, you can rest assured that your systems are shielded from the harmful impacts of hard water, ensuring their long-term performance and effectiveness.

Call Us to Book Your Water Softener Service Today!

At Dantek, we understand the importance of maintaining a safe and efficient water supply within your commercial environment. Our specialized water softener team is here to provide you with top-notch service that aligns with the HSG 274 guidelines for legionella control. Don’t wait until issues arise – take proactive steps to ensure the longevity and optimal performance of your base exchange water softeners.

Booking your annual Base exchange water softeners service is easy. Our friendly and knowledgeable staff are ready to assist you in scheduling a convenient appointment that suits your business needs. Whether you’re seeking routine maintenance, disinfection, or comprehensive checks, our team is equipped to provide the best care your water softener system deserves.

By choosing Dantek for your water softener servicing needs, you’re choosing reliability, expertise, and a commitment to water system safety. Give us a call today to secure your appointment and take a proactive step toward maintaining a healthier, more efficient water supply for your business.

Contact us at 01454 417 920 or sales@dantek.co.uk to schedule your water softener service now! #Baseexchangewatersofteners

Optimizing Legionella Control: The Power of Rental Chlorine Dioxide Units

Rental Chlorine dioxide units

Ensure proper Legionella control in your property with the effective solution of a rental chlorine dioxide unit. When faced with Legionella control issues, this rental unit becomes a powerful tool in your armory, offering numerous benefits.

  • Rapid Deployment: Rental units can be swiftly deployed, providing a quick response to control issues while other maintenance works are underway.
  • Cost Savings: Opting for a rental unit eliminates the need for significant capital expenses, making it a cost-effective solution for achieving and maintaining Legionella control.
  • Safe On-Site Generation: The on-site generation of Chlorine Dioxide ensures safety while effectively combating Legionella, contributing to a secure environment.
  • Legislative Compliance: Achieve and maintain legislative compliance for Legionella control, meeting the required standards for a safe and hygienic property.
  • Reduced Running Costs: Experience reduced running costs, especially in terms of hot water temperatures (excluding healthcare), contributing to efficient and economical operation.
  • Maximum Performance: Benefit from maximum performance through a bespoke system design, tailored to address specific Legionella control needs.
  • Professional Integration: Ensure smooth integration with the expertise of trained installation and service engineers, guaranteeing optimal performance.
  • High Purity: The chlorine dioxide generated is of high purity, ensuring its effectiveness in Legionella control.
  • Compliance with Standards: The chemical regimes used are compliant with BS EN 12671:2009, adhering to industry standards for water treatment.

Dantek provides a comprehensive solution, offering a one-stop shop for the provision, installation, and maintenance of chlorine dioxide units. For more information on rental chlorine dioxide unit, contact Dantek at 01454 417 920 or via email at sales@dantek.co.uk. Trust #teamdantek for expert guidance in chlorine dioxide, Legionella control, water treatment, and more. #chlorinedioxide #legionella #watertreatment #legionellacontrol https://dantekenvironmental.co.uk/contact-us/

Thermostatic mixer valve (TMV) servicing

What are Thermostatic mixer valves?

What are TMV’s and when do they need to be serviced? Thermostatic mixer valves (TMV’s) are devices used to accurately control the temperature of water by blending hot and cold water to a set temperature between 38°c and 46°c to prevent the risk of scalding.  Scalding can occur within seconds, especially with vulnerable users, by installing TMV’s ensures water is provided at a safe temperature.

What is the impact of a Thermostatic mixer valves on Legionella control?

The most common way to prevent legionella bacteria is through the control of temperature within hot and cold-water systems. Hot water must be stored at above 60°c as this will kill off any legionella bacteria in the system, and hot water temperatures must reach 50°c at the outlets to manage the risk of legionella bacteria.  However, the problem of scalding arises as clearly water at these temperatures could cause scalding, so this is where the two risks namely, legionella risk and scalding risk must be considered together and a solution found.

TMV’s are often used as a solution to prevent scalding but can themselves increase the legionella risk if not managed and maintained correctly.

The water in pipework downstream of a TMV being less than 50°c could provide a suitable environment in which legionella bacteria could multiply and therefore increase the legionella risk.  So, it is important to ensure TMV’s are installed as close as possible (less than 2m) to the outlet to reduce the legionella risk, while also managing the scalding risk.

Always consider whether the TMV is actually required, during the Legionella risk assessment the scalding risk will be compared to the legionella risk, if the scalding risk is considered insignificant then the TMV should be removed.

5 points to consider when fitting Thermostatic mixer valves

  1. The TMV should be part of the tap fitting if possible, to mix the water at the outlet.
  2. The legionella risk will be increased if a TMV is fitted to a low flow spray tap.
  3. The TMV should be fitted as close (within 2m) as possible to the outlet to reduce the volume of stored water in the pipework.
  4. The legionella risk is increased if the TMV valve feeds more than one outlet, for example, a bank of showers or wash hand basins.
  5. A TMV can inadvertently make a cold tap become little-used outlet that will need to be flushed weekly.

When should a Thermostatic mixer valves be fitted?

  • TMV’s should be installed within areas that present a high risk of scalding especially with full body immersion such as Baths and showers and particularly with very young or elderly people.
  • TMV’s can also be fitted to wash hand basins and sinks where a significant scalding risk has been identified, for example in properties with very young or very old people or in properties with mentally or physically disabled people.
  • TMV’s are required in all healthcare premises for example hospitals and healthcare centres.

When do my Thermostatic mixer valves need to be serviced?

The valves need to be checked on an annual basis or at a frequency defined by the risk assessment. It is important to ensure the valves are working correctly and will offer protection against scalding.

In hospitals, different regulations apply, and checks are bi-annual.

What is the difference between a type 2 Thermostatic mixer valves and a type 3 Thermostatic mixer valves?

Type 2 TMV can be overridden by the user. Type 2 TMV’s are only suitable for domestic situations and housing associations for able-bodied people. Products meet the standards BS EN 1111 and or BS EN 1287.

Type 3 TMV complies with the NHS document D 08 and has a pre-set temperature are fail-safe and cannot be overridden by the user.  Type 3 TMV’s are required in healthcare premises.  They are specified in the NHS Estates Model Engineering Specification Thermostatic mixing valves (healthcare premises).

For further information:

Health Technical Memorandum (HTM) 04-01 The control of Legionella, hygiene, ‘safe’ hot water, cold water, and drinking water systems Department of Health ‘Space for Health’ website (registration required) www.spaceforhealth.nhs.uk

HSE Managing the risks from hot water and surfaces in health and social care http://www.hse.gov.uk/pubns/hsis6.pdfThermostatic mixer valve (TMV) servicing

Please give our team a call on 01454 417 920 to discuss any aspect of TMV servicing or visit https://www.dantekenvironmental.co.uk/services/plant-equipment/tmv-servicing/ for more information

Bsi

Cooling Tower dosage equipment in the City

Dosage equipment
Efficient dosage and control equipment for cooling tower

 

Dantek provide cutting edge cooling tower dosage installation.

 

In a bid to drive up chemical dosage efficiency in a high profile London location, Dantek has provided turnkey solutions, from design and supply through to install, with state of the art dosage and control equipment.

 

In the very first week, data collected from the equipment highlighted system inefficiencies, empowering the building managers to act fast to implement changes. That’s because the state of the art unit is equipped for direct communication with the building’s LAN, enabling 24/7 remote monitoring and control.

 

Thanks to these changes, the Building Managers have seen a significant reduction in water usage an increase in safety and peace of mind.

 

The install incorporates a corrosion rack assembly for quantitative measurement of corrosion rates in the system: that enables us to accurately measure the effectiveness of the water treatment regime and respond fast.

 

At Dantek we understand that you want optimum value for money, safety and control; that’s why we’re delighted to see this system delivering just that for our client, in such a short period of time.

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