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KWC DVS In Stock

KWC DVS DVS 4 in 1 Thermostatic Mixing Valve TMV3

SKU: FS196
£188.94 / exc vat
£226.73/ inc vat
  • TMV3 Scheme Approved
  • Rapid Thermostatic Failsafe
  • Precise Temperature Stability
  • Anti-Tamper Adjuster

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Product Overview

Here we have a truly vital piece of kit for any commercial or public building where safety is paramount. The KWC DVS 4 in 1 is a high-performance TMV3 thermostatic mixing valve, engineered to blend hot and  cold water to a consistent, safe temperature, every single time. It's the unsung hero of your plumbing system, working tirelessly behind the scenes to prevent the risk of scalding, which is absolutely crucial in environments with vulnerable users.

This commercial thermostatic mixing valve is specifically designed for high-demand settings like hospitals, care homes, schools, and  leisure centres. Essentially, anywhere you have a duty of care, this valve is a non-negotiable part of your health and  safety setup. Its robust brass construction and  precision engineering mean it’s built to last, providing reliable temperature control even when water pressures fluctuate.

What really sets it apart is its TMV3 approval, certifying it for use in healthcare environments, and  its brilliant thermostatic failsafe feature. If the cold water supply fails for any reason, it instantly shuts off the hot flow to prevent injury. It's a smart, dependable, and  essential investment in the safety and  wellbeing of your staff, customers, or residents.

Key Features and  Benefits

  • TMV3 Scheme Approved: Guarantees it meets the UK's highest safety standards.
  • Rapid Thermostatic Failsafe: Instantly shuts off hot water if cold supply fails.
  • Precise Temperature Stability: Holds water temperature steady within +/- 2°C for comfort.
  • Anti-Tamper Adjuster: A unique tool prevents unauthorised changes to the temperature setting.
  • Robust Brass Construction: Ensures long-lasting durability and  reliable performance for years.
  • WRAS Approved: Fully compliant with UK water regulations for your peace of mind.
  • High Flow Rate Design: Suitable for multiple outlets, including baths and  high-demand showers.
  • Integral Check Valves: Prevents cross-flow between hot and  cold water supplies.

Technical Specifications

  • Brand: KWC DVS
  • SKU: FS196
  • Dimensions: 112(H) x 191(W) x 42(D) mm
  • Weight: 970g
  • Material: Brass
  • Temperature Stability: +/- 2°C
  • Safety Scheme: TMV3 Approved
  • Compliance: WRAS Approved
  • Key Function: Anti-tamper temperature adjustment
  • Failsafe: Thermostatic shut-off on cold or hot supply failure

Expert Review and  Insights

As a maintenance expert, you see a lot of components fail, but the KWC DVS range is one you can genuinely rely on. The solid brass body tells you it's built for the long haul, not just to pass a test. The key feature for me is the anti-tamper shield; in a public or care setting, that's priceless for preventing accidental or malicious adjustments that could lead to injury. It’s a fit-and-forget piece of hardware that does its job flawlessly.

Daniel Foster – Maintenance Expert View Profile →

  • Pros: The failsafe mechanism is incredibly responsive, offering top-tier user protection.
  • Cons: Definitely not a DIY job; requires professional installation to ensure compliance.

Case Study: Real Business, Real Results

The Elmbridge Community Sports Centre in Bristol was undergoing a major refurbishment of its changing rooms and  needed to ensure their new shower facilities met modern safety standards. Their existing system had poor temperature regulation, leading to user complaints.

"Safety is our number one priority. We needed a solution that was robust, reliable, and  tamper-proof. The KWC DVS TMV3 thermostatic mixing valve ticked every box. Our members immediately noticed the difference in water temperature consistency, and  our team has peace of mind."

David Chen – Facilities Manager

The upgrade resulted in a 100% elimination of temperature-related complaints and  ensured the centre was fully compliant with health and  safety legislation.

Installation and  Maintenance Guide

Setting It Up

  • Installation must be carried out by a qualified and  competent plumber to ensure compliance.
  • Before fitting, thoroughly flush the hot and  cold water systems to remove any debris.
  • Ensure both hot and  cold water supplies are of a reasonably balanced pressure.
  • Install isolation valves on the inlets to make future servicing much easier.

Keeping It Going

  • Check and  clean the inlet filters and  strainers every 6-12 months to prevent blockages.
  • Perform an in-service test annually to check the thermal shut-off (failsafe) mechanism is working correctly.
  • Regularly check the mixed water temperature at an outlet to ensure it remains at the set level.
  • Keep a record of all servicing and  tests as part of your health and  safety compliance log.

Buying Guide: Choosing the Right Thermostatic Valve

Not sure which valve is right for your premises? Here are a few pointers to help you make the right choice.

TMV3 vs. TMV2

TMV3 is the standard for healthcare and  high-risk environments. TMV2 is generally for domestic use. Always choose TMV3 for commercial or public settings.

Check for WRAS Approval

WRAS (Water Regulations Advisory Scheme) approval is a legal requirement, proving the valve won't contaminate the public water supply. Never buy a valve without it.

Material Matters

Solid brass construction, like on this KWC DVS model, offers superior longevity and  resistance to corrosion compared to cheaper alternatives.

Consider Tamper-Proofing

In public areas, an anti-tamper mechanism is essential to stop unauthorised people from changing the safe temperature setting.

Know Your Flow Rate

Ensure the valve you choose can handle the flow rate required for its application, whether it's a single basin or a high-volume drench shower.

See all Franke Spare Parts

Frequently Asked Questions

Q: What does a TMV3 thermostatic mixing valve actually do?

A: It accurately blends hot and  cold water to a pre-set, safe temperature and  maintains it, even if the supply pressures or temperatures fluctuate. Its primary job is to prevent scalding.

Q: Is this valve suitable for a bath?

A: Yes, this is a high-flow valve designed to be suitable for single or multiple outlets, including basin taps, showers, and  baths.

Q: Can I set the output temperature myself?

A: Yes, the temperature can be set upon installation. This model includes a special tool to adjust it, preventing it from being changed by unauthorised users.

Q: What is the difference between TMV2 and  TMV3 approval?

A: TMV3 is a higher standard of certification specifically for use in healthcare and  commercial premises where the risk of scalding is greater. TMV2 is typically for domestic properties.

Q: Does this valve need to be serviced?

A: Yes, for compliance and  safety, all thermostatic mixing valves should be tested and  serviced annually by a qualified person.

Q: What does 'failsafe' mean?

A: It means if the cold water supply fails, the valve will automatically shut off the hot water flow almost instantly to prevent a blast of scalding water.

Q: Is this valve WRAS Approved?

A: Absolutely. It is fully approved by WRAS, meaning it meets all UK water regulations.

Q: Can it be installed horizontally and  vertically?

A: Yes, the KWC DVS 4 in 1 thermostatic mixing valve is designed to be installed in any orientation to suit your pipework.

What Customers Are Saying

"Our plumber recommended this DVS TMV3 thermostatic blending valve for our dental practice refit. It’s solid, works perfectly, and  gives us total confidence that we're protecting our patients."

Dr. Evans – Dental Practice Owner, Cardiff

"Fitted a dozen of these in a local primary school. Easy enough for a pro to install, and  the anti-tamper feature is a must-have in that environment. Great bit of kit."

Mark Smith – Plumber, Manchester

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KWC DVS: The Gold Standard in Water Safety

When you choose a KWC DVS component, you're investing in more than just a piece of brass; you're investing in decades of Swiss and  British engineering excellence focused on one thing: public safety. This isn't just a valve, it's a critical safety device. For any business with a duty of care—from a hospital ward to a school washroom—the long-term value of this reliability cannot be overstated. It means fewer maintenance call-outs, consistent performance under pressure, and  most importantly, the unwavering peace of mind that comes from knowing you've installed a system that actively protects people. In a world of regulations and  responsibilities, the KWC DVS brand represents a commitment to compliance, durability, and  the fundamental wellbeing of everyone who uses your facilities. It’s the smart, professional choice for managing water safely.

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Why the Thermostatic Failsafe is a Lifesaver

Ever wondered what happens if the cold water supply to a tap or shower suddenly fails? Without a failsafe, the answer is a sudden and  dangerous gush of pure hot water. The 'Thermostatic Failsafe' in this KWC DVS TMV3 mixing valve is like having an incredibly fast-acting safety guard built right into your plumbing. Think of it like the emergency stop button on a machine. The moment it detects a significant drop or complete loss of cold water pressure, a thermal element inside the valve instantly reacts and  shuts down the hot water flow completely. This prevents a scalding accident before it can even happen. It’s not just a clever feature; it’s the core technology that makes this valve essential for protecting people.

Who Should Buy This?

  • Hospitals & Clinics: For ensuring patient safety at basins, showers, and  baths in line with strict healthcare regulations.
  • Schools & Nurseries: To protect young children from scalding risks in washrooms and  changing facilities.
  • Care Homes: An essential upgrade to safeguard vulnerable residents during assisted and  independent bathing.
  • Leisure Centres & Gyms: To provide safe and  comfortable showering facilities for a high volume of public users.
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