NRv2 Logo
(UK Patent No. 2440412)

The standard NRv2 is designed as a cost-effective way of protecting water services from backflow issues caused by boilers and / or faulty valves in older boundary boxes.

A simple “plug and play” system designed to fit between a water meter and manifold in ANY underground meter chamber, NRv2 ® can either upgrade any backflow protection up to fluid category 3 or remediate failing apparatus in the highway without expensive excavation.

NRv2® can be used with any concentric meter, is quick and simple to install, requiring no special tools or excavations, and is significantly more than cost effective when comparing the price of replacing a boundary box (£250.00+)

Can also be used with equestrian, agricultural or park home situations – essentially anywhere where additional protection against backflow (to fluid category 3) is required within Water Regulations.


NRv2 LoFlo Logo

For use in water stressed areas, our new NRv2 LoFlo system is a direct derivative of the successful standard product offering the same benefits, but with the added facility of being able to maximise the delivery of water to a property – ensuring that whilst water standards are maintained, no one property can over use the (diminishing) water resources available – all within the directives of the Water Industry Act.

NRv2® and NRv2 LoFlo are fully approved by WRAS and Kiwa

Click here to download the WRAS approval certificate for the NRv2 family.

WRAS and KIWA Approved

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Technical Specifications

  • WRAS certified as being compliant with all water industry specifications for materials.
  • Pressure tested to 50 Bar
  • Thread: male / female 1.5” BSP thread (standard concentric meter thread) in accordance with Water Industry Standard (WIS 4-37-01)
  • Certified to offer whole site protection to Back Flow Category 2

Technical product flyer with flow rate computation

Installation Guides

  • Simply screw NRV2 between the thread of the meter (concentric type) and the thread of the manifold
  • Locate in the Groundbreaker or boundary box as “standard”

The patented innovative design will, when two units are used in series, will provide a “double check valve” offering protection up to fluid category 3.

Please note: any such work must have prior approval of the local water company.

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Where to buy

Our products are available throughout the UK from a variety of stockists and distributors

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