Bath and tap designs do vary but the plumbing connections tend to be standard in terms of dimensions: 15mm and 22mm. Nova-Flo is designed to be compatible with almost all bath and tap combinations. Full installation instructions can be found here. We recommend using John Guest Speedfit plumbing fittings should any installation issues regarding pipe arrangements arise If you’re unsure as to whether Nova-Flo is compatible with your system, please contact us.

Technical Specification Sheet



Under normal operating conditions Nova-Flo is designed to be maintenance free although we do recommend a bi-annual check to confirm correct functioning. If foreign matter is obstructing the float chamber your Nova-Flo may not reset immediately. Cleaning is required to return to normal operation. You can click here for servicing instructions.


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Quality Assurance and Warranty

Nova-Flo is fully WRAS approved and manufactured to the highest standards. Every unit produced by our UK factory is fully tested and covered by a one year manufacturer’s warranty. The materials we use are carefully sourced to provide long-lasting performance that contributes to a product lifespan that exceeds some baths.

Frequently Asked Questions

How much does Nova-Flo cost and where can I buy one?
The recommended retail price of Nova-Flo is £99.00 + VAT and it’s sold through an approved network of plumbing merchants. For details of your nearest supplier click here or call our sales helpline on 01608 811707.  
Won’t my overflow stop my bath from flooding?
In recent times homeowners and businesses have taken action to improve water pressure. Overflows are rarely able to cope and can quickly become overwhelmed even in relatively slow filling baths and basins. Installing Nova-Flo can remove the risk of this type of water escape whilst also reducing water and energy consumption by stopping hot water pouring down the overflow
Can I install it myself?
Although Nova-Flo uses John Guest Speedfit fittings to make installation as straight-forward as possible we recommend installation is carried out by a competent plumber.  
Do I need an electrical supply?
Nova-Flo is fully mechanical in operation. It uses magnetically activated valves to shut off the water supply to taps when the water level reaches the overflow and automatically resets when the taps are turned to the closed position. No electrical connections or batteries are required.
Can I retro-fit Nova-Flo on my existing bath?
Nova-Flo is relatively straight-forward to retro-fit. John Guest Speedfit fittings make installation possible even where space is restricted, although it’s easiest to fit Nova-Flo at the same time as a new bath.
Will I need to change my taps?
Nova-Flo ought to fit easily with almost all bath and tap configurations so replacement taps shouldn’t be required. Please take a look at our instruction manual for more details.
What do I need to do once Nova-Flo is installed?
You shouldn’t have to do anything other than enjoy the peace of mind Nova-Flo can bring! Our unique design means that even when triggered Nova-Flo self-intuitively resets when the taps are turned to the closed position. No change of behaviour is required – the user doesn’t even need to know it’s installed.  
What about my kitchen sink and washroom basin?
Nova-Flo can be used to protect sinks and basins providing they have a separate overflow. See our basin instruction manual for further details.