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Honeywell water control valves are being installed on the Royal Navy’s new aircraft carrier, HMS Queen Elizabeth.

They will be used to ensure uniform ideal water pressures automatically at all domestic water outlets and to prevent excessively hot water in baths, showers and wash basins.

Marine engineering valve specialist Score Marine is installing 50 Honeywell Kombi 4 throttle valves for automatic hot water balancing and 142 Honeywell TM200VP thermostatic mixing valves on the ship – the largest ever built for the Royal Navy.

The Kombi 4 throttle valve is small, is said to cost less than other auto-balancing systems and is easily fitted.

The Honeywell TM200VP is certified to the Buildcert standard for thermostatic mixing valves, TMV3, and ensures a constant safe temperature at the point of delivery by blending hot and cold supplies to provide a uniform, safe preset temperature.

Domestic hot water on the ship will be stored at at least 60C to avoid legionella and distributed at 50C minimum, which is dangerously hot for bathers, so the Honeywell TM200VP failsafe mixing valves are essential at the outlet to prevent scalding.

The Kombi 4 throttle valves have a thermal disinfection feature: when water at more than 70C is flushed through the system periodically for thermal disinfection against legionella, they open further automatically to ensure hot water is rapidly distributed in all risers and pipelines, while maintaining the balance.

They return automatically to their usual control state when the water temperature falls to normal.

Honeywell Control Systems

Honeywell Environmental and Combustion Controls is the leading innovator in heating controls, gas controls and water products that improve energy efficiency and water conservation, support regulatory compliance, and maintain safe, comfortable environments in homes and buildings.

With wired and wireless options, Honeywell heating controls combines ease and speed of installation with the best in comfort, energy efficiency and sophistication.

Honeywell is committed to addressing the 80 percent of UK homes without the Building Regulations’ minimum standard for energy efficient heating controls, and the 8.5 million homes without even a simple thermostat. Its latest innovations include TPI (Time Proportional and Integral) advanced energy saving control, which provides more accurate temperature control than traditional home controls and uniquely also matches boiler firing to system load, so the boiler operates much more efficiently.

Honeywell water controls include valves and accessories for water control, pressure reduction and regulation, backflow prevention and system balancing. They range from brass bodied products for plumbers to large cast iron valves for the water mains supply.

Technical help on any aspect of heating and water control is available on the websites below or by calling the Honeywell Technical Support Line during office hours on 08457 678999 (local rate for UK callers).

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